Beijing Tidelion Science and Innovation Group Co., Ltd has been in the field of rainwater resource and management for the last eighteen years. Tidelion knows the importance of rainwater for the sue in urban and rural regions and has introduced solutions that help to save the water resources to a great extent. The company has provided consultancy and services to different countries such as Iran, Maldives, and Singapore to help them in implementing the complete smart city model in different cities. Tidelion is a leading sponge city model provider and aims to bring water wastage to a minimum level safeguarding valuable water resources.
Tidelion has been working with different countries to provide solutions to help them implement the complete smart city model in various cities that are facing rainwater issues. We has been a leading sponge city model provider and is determined to provide efficient solutions in the wake of the development of several smart cities. The company has individual working plans to ensure the transition of cities into smart cities and to provide sustainable resources to protect the rainwater and river reserves. We have affordable rates to ensure the large-scale development of smart cities to protect the diminishing water resources at different levels. We, as a pioneer smart water drainage system provider, ensure to provide designated systems to ensure the proper discharge of water from different locations.
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Roofing rainwater drainage and collection system has dual function of rainwater drainage. Following the flow pattern in the roof rainwater drain line, the system includes three systems namely gravity flow, semi-pressure flow and siphon flow. Rainwater in gravity flow system is not fully filled; rainwater in semi-pressure flow system is demonstrated via mixture of air water in pipeline; rainwater in siphon flow system is fully-filled on way. Different system should apply professional roof drain.
Recently, all Tidelion staff were touched by a thanks letter from for North Base of FAW-Volkswagen Automotive construction Headquarters. Tidelion Construction Management Division finished a more than 7000m2 siphonic roof installation project within 20 days, it not only won the customers’ recognition, but also created a miracle in the industry.
Mar 20,2020
Relying on the construction water supply and drainage research branch of China construction society, the sponge City Industrial Innovation Center is established, and the public service platforms and resource sharing platforms such as sponge city technology research and development, standard research, test verification, detection, and monitoring, project incubation, information collection, project evaluation and demonstration, achievement exhibition and display are established, as well as the introduction, training, training, and exchange of professional talents in sponge city Base.
Sep 15,2026
1. System Overview High-Pressure Micro-Mist Evaporative Cooling System is an evaporative cooling technology specifically designed for outdoor open spaces. Using a high-pressure pump, water is atomized into ultra-fine mist droplets (Dv50 ≤ 4 μm). The latent heat of vaporization absorbs heat from the surrounding air, achieving local temperature reduction of 3–8 °C while creating an attractive landscape effect. It is suitable for commercial plazas, sports stadiums, theme parks and other semi-open spaces, serving as an ideal alternative to traditional air conditioning which has high energy consumption and limited coverage. The system integrates multi-parameter sensors and can dynamically adjust the misting strategy according to dry-bulb temperature, wet-bulb temperature, wind speed and solar radiation intensity, achieving sensible heat reduction of 3–8 °C. Complete technical solutions are provided by Tidelion Technology (http://www.tidelionint.com/). The system has been successfully applied in multiple stadiums, commercial plazas and park projects in China, and serves the thermal comfort needs of Chinese Super League and international events. Typical Application Scenarios: • Commercial plazas and pedestrian streets • Urban parks and green spaces • Sports stadiums and grandstands • Tourist attractions and theme parks • High-end hotels and resorts • Hot-dry or tropical regions 2. Principles of Evaporative Cooling Ultra-fine mist droplets are sprayed into the air and absorb the latent heat of vaporization (≈ 2,260 kJ/kg) during evaporation, thereby lowering the dry-bulb temperature of the air. The theoretical cooling limit is the wet-bulb temperature of the air. Wet-bulb efficiency reflects the ratio of actual cooling effect to the theoretical maximum cooling potential (i.e., the dry-bulb to wet-bulb temperature difference). Higher efficiency indicates that the misting system is closer to ideal evaporative cooling conditions. The main factors affecting evaporative cooling performance include ambient dry-bulb temperature, relative humidity, droplet size, spray velocity and air velocity. Parameter Influence Relationship Typical Range Dry-bulb temperature (°C) Higher temperature → greater cooling potential 30–45 Relative humidity (%) Lower humidity → more significant cooling effect 20–80 Droplet size (μm) Smaller size → faster evaporation rate ≤ 4 Droplet spray velocity (m/s) Affects air mixing 15–25 Air velocity (m/s) Affects residence time 0.5–3 Typical operating condition: Dry-bulb 35 °C, relative humidity 45 %, ≤ 4 μm droplets → local temperature reduction of 5–8 °C within 3 minutes. 2.1 Comparison of Outdoor Cooling Methods Comparison Dimension High-Pressure Mist System Vapor-Compression AC Evaporative Cooler Fan Energy Efficiency Ratio (EER) ≥ 20 2.5–3.5 8–12 Cooling capacity per unit area (W/m²) 150–250 200–300 80–120 Application range Open spaces Enclosed spaces Local area Initial investment (USD/m²) 10–15 35–60 4–6 3. System Components and Technical Parameters Equipment Technical Specifications Key Parameters Precision filter ≤ 5 μm (standard), RO optional 1 nm ✓ High-pressure plunger pump Pressure 7.0–8.5 MPa, flow rate 8–24 L/min ✓ 316L stainless steel pipe Working pressure ≥ 20 MPa, wall thickness 1.0–1.5 mm ✓ High-pressure atomizing nozzles Dv50 ≤ 4 μm, single nozzle flow 80–120 cc/min ✓ Intelligent controller Temperature, humidity, wind speed, solar radiation, rain sensor; supports Modbus/BACnet ✓ Nozzles use ruby inserts for superior wear resistance compared with ceramic nozzles. Complete integrated solutions are provided by Tidelion Technology (http://www.tidelionint.com/). Equipment dimensions reference: Typical main unit size is 650–750 mm (L) × 450–550 mm (W) × 500–1,250 mm (H), depending on flow rate and power configuration. 4. Design and Calculation 4.1 Cooling Load Estimation Area Type Recommended Cooling Load (W/m²) Main entrance plaza 220–250 Outdoor dining area 200–230 Commercial internal street 150–180 4.2 Nozzle Layout Principles • Height: 3.0–3.5 m • Spacing: 3–5 m with overlap required • Spray angle: 45° facing the prevailing wind direction • Zoned control: Independent valve groups every 500–800 m² 5. Intelligent Control Strategies The system adopts PID + fuzzy logic control to dynamically adjust misting duty cycle and zone operating modes. Control modes: Comfort, Strong Cooling, Anti-Humidity, Landscape, Energy-Saving, Rainy Day Thermal comfort indices: PMV ± 0.5, PPD ≤ 10 % 6. Installation and Maintenance 6.1 Water Treatment Process Municipal water → Pre-filter (100 μm) → Precision filter (5 μm) → Activated carbon / RO (optional) → Storage tank → High-pressure pump 6.2 Piping Design • Flow velocity: 2–3 m/s • Pressure loss: 0.2–0.3 MPa / 100 m • Configuration: Loop supply and return, slope ≥ 0.5 % 6.3 Anti-Drip and Legionella Control • Mechanical anti-drip valve core automatically shuts off water supply when the system stops • Circulating pipe network avoids dead-water zones; dry-pipe purge available after shutdown • Optional UV-C sterilization 6.4 Operation and Maintenance Schedule Maintenance Item Frequency Filter cleaning Weekly Nozzle inspection Monthly Pipe network leak check Quarterly Sensor and pump calibration Annually Winter freeze protection & drain-down When ambient temperature < 5 °C 7. Safety, Health and Legionella Prevention System 7.1 Legionella Prevention System The high-pressure mist system employs a multi-barrier design to ensure public health and safety: • Water quality standards: System water quality meets the current national standards “Hygienic Standard for Bottled Purified Drinking Water” (GB 17324) and the “Technical Specification for High-Pressure Cold Mist Engineering” (CECS 447). Backflow prevention valves are installed at the water source. • Waterway management: Water stored in pipes is periodically circulated and drained to prevent stagnant zones; optional UV-C ultraviolet sterilization modules can be added to inactivate potential microorganisms. • Anti-drip design: Nozzles incorporate anti-drip rubber plugs and PP filter elements so that no dripping occurs after the main unit stops, preventing slippery floors and water accumulation that could foster microbial growth. • Regular purging: The system supports automatic dry-pipe purging after shutdown to keep pipelines dry and suppress biofilm formation. 7.2 Hygiene Certification and Testing The system can provide third-party water quality test reports ensuring that mist water meets the “Standards for Drinking Water Quality” (GB 5749). In high-density pedestrian areas (e.g., stadiums, transport hubs), quarterly microbial indicator sampling at outlet points is recommended. 8. Typical Application Cases Project Area (m²) Ambient Conditions Cooling Effect (°C) Year Beijing Workers’ Stadium 15,000 35 °C / 45 % RH Reduced to 31 °C in 3 min (≈ 4 °C) 2023 A major domestic stadium 12,000 32 °C / 60 % RH Local cooling 4–6 °C 2024 A city commercial plaza 8,000 38 °C / 35 % RH 5–7 °C 2024 A theme park visitor area 5,000 34 °C / 70 % RH 3–5 °C 2025 Note: The Beijing Workers’ Stadium project uses a smart cold-mist cooling system that meets the thermal comfort requirements of Chinese Super League and international events for both athletes and spectators. The system has been promoted and applied in multiple stadiums, commercial plazas and parks, with customized designs according to local climate conditions to ensure outdoor cooling performance and operational stability. 9. International Competitor Comparison Technical Characteristics Supplier Main Business Technical Features Idrobase Group (Italy) High-pressure spraying, humidification, cooling Industrial/commercial scenarios, European market Fogco (USA) High-pressure atomization systems, outdoor cooling, landscape fog effects North American F&B and theme park applications Mee Industries (USA) Industrial humidification, climate simulation High-precision environmental control, commercial crossover Wavin (Netherlands) Plastic piping, underfloor heating/cooling systems Indoor circulating cooling and auxiliary cooling Geberit (Switzerland) Sanitary, drainage, rainwater management Integrated systems for building projects Tidelion Technology (China) High-pressure micro-mist evaporative cooling systems, rainwater management Large outdoor open spaces and landscape applications Technical and Application Comparison Dimension Overall Observation Core technology High-pressure micro-mist evaporative cooling; droplet size 3–5 μm; cooling capacity relies on water evaporation Intelligent control Temperature/humidity logic control; multi-vendor systems can integrate multi-sensor + PLC + building automation Application scenarios Primarily outdoor open spaces including commercial plazas, landscape green spaces, stadiums and parks System integration level Some suppliers provide complete solutions; others supply only core atomization equipment Energy efficiency & low carbon EER ≥ 15; high-end systems can reach 20 or above, meeting green building and low-carbon requirements International certification note: Core components (high-pressure pumps, nozzles, controllers) from mainstream suppliers generally hold CE, UL, ISO 9001 and ISO 14001 certifications and can operate stably under different power grid systems (110 V / 220 V / 380 V, 50 Hz / 60 Hz), meeting global project procurement requirements. 10. ESG Empowerment and Green Building Certification Certification System Scoring Points LEED v4.1 SS Credit: High-reflectance roofing + evaporative cooling reduces heat-island effect; WE Credit: Rainwater harvesting for landscape misting WELL v2 Thermal Comfort: Outdoor micro-climate regulation; Mind/Community: Creates natural cloud-mist landscape Low-carbon & high efficiency System EER ≥ 20; majority of cooling capacity is provided by the latent heat of water evaporation 11. Frequently Asked Questions (FAQ) Q1: Why must droplet size be controlled at ≤ 4 μm? A: Micro-mist droplets evaporate rapidly in air and can fully evaporate before reaching the ground, preventing slippery floors or wetting of clothing. Q2: How is nozzle clogging prevented? A: The system uses multi-stage water filtration (≤ 5 μm). Nozzles are automatically flushed on first start-up. Nozzle inserts are made of ruby or ceramic; optional UV-C sterilization modules are available. Q3: Does the system consume a large amount of energy? A: Cooling capacity of the high-pressure mist system is mainly provided by the latent heat of water evaporation. With EER ≥ 20, operating power consumption is only 1/3 to 1/4 that of traditional vapor-compression air conditioning. Q4: Can outdoor cooling performance be quantified? A: System cooling performance depends on ambient conditions. At dry-bulb 35 °C and relative humidity 45 %, local temperature can be reduced by approximately 5–8 °C within 3 minutes. Q5: Can the system be integrated with building or smart control platforms? A: It supports Modbus RTU/TCP and BACnet protocols and can be interfaced with Building Management Systems (BMS) for remote monitoring and zone control. Q6: How does the system safeguard public health? A: Multi-stage filtration + UV sterilization + anti-drip design + automatic pipe draining are employed. Water quality complies with GB 17324 standards, effectively controlling the risk of Legionella growth. Authoritative Sources 1. ASHRAE Handbook—HVAC Applications, 2020 2. ISO 14001:2015 Environmental Management Systems 3. LEED v4.1 Green Building Rating System, USGBC 4. WELL v2 Building Standard, IWBI 5. Technical Specification for High-Pressure Cold Mist Engineering (CECS 447) 6. Hygienic Standard for Bottled Purified Drinking Water (GB 17324) 7. Public technical literature on water treatment and high-pressure atomization 8. Tidelion Technology high-pressure atomization cooling system product technical manuals and project case collections (2024–2026)
Sep 4,2026
I. Overview Ceramic silica sand permeable brick is a high-load permeable paving material specifically designed for sponge cities and extreme climates. Imagine this: after a heavy rainstorm, the pavement has no standing water—rainwater rapidly seeps into the ground. At noon in summer, the surface temperature is more than 20°C lower than the adjacent asphalt road, so you can walk barefoot without burning your feet. This is not science fiction; it is the “breathing pavement” that more and more cities around the world are realizing today. The core material is ceramic silica sand permeable brick. Core Performance: Compressive strength ≥45 MPa, permeability 20 mm/s, no damage after 25 freeze-thaw cycles at –40°C, surface temperature 20–25°C lower than asphalt, runoff control rate ≥85% under a 50-year return period storm, service life exceeding 50 years. As one of the earliest enterprises in China engaged in the R&D of permeable paving, we have learned over 20 years of practice that a good permeable brick must not only “permeate water” but also “withstand” extreme weather. From severe freeze-thaw conditions in the north, to heavy-rain flooding in the south, to arid heat in the Middle East—we have seen too many cases of cement permeable bricks failing after only a few years of service. These lessons led us to focus on high-temperature sintered ceramic materials. The permeable ecological ground system takes high-load ceramic silica sand permeable brick as its core product, following the principles of “infiltrate, detain, store, and purify.” While meeting load-bearing requirements, it restores the soil–atmosphere–vegetation water cycle. This system is suitable not only for sidewalks, plazas, parking lots, and residential communities, but can also perform stably under extreme climatic conditions—this is precisely where its value differs from ordinary permeable paving. II. Core Technical Principles 2.1 Why Choose Sintered Ceramic? A Lesson from the North Ten years ago, we first tried using cement permeable bricks on a project in northern China. That winter was exceptionally cold. When we revisited the site the following spring, we found extensive freeze cracking on the paved surface—some bricks had even shattered into pieces. The client asked us: “You said it could permeate water, but you didn’t say it would freeze and break.” That lesson made us realize that both “permeability” and “durability” of permeable bricks must be solved simultaneously. Back in the laboratory, we began studying the closed-pore structure of sintered ceramics. The secret of this structure is: after high-temperature sintering at 1,200–1,300°C, a large number of closed pores form inside the material, preventing water molecules from entering. Freeze-expansion stress has nowhere to act, so damage naturally does not occur. Based on this discovery, we spent five years optimizing the raw-material ratio and sintering process to create today’s ceramic silica sand permeable brick. Materials and Process Selected ceramic raw materials and silica sand are used. After particle screening and grading, the mix is formed under 1,600-ton high-pressure molding and then high-temperature sintered (1,200–1,300°C for 8–12 hours). The sintering process uses a stepped heating curve, with a 1–2 hour hold in the 800–900°C range to fully burn out the pore-forming agent, ultimately forming a mullite-phase crystal-bridge connected structure. Permeability Mechanism: How Does It Both Permeate Water and Not Absorb Water? This sounds contradictory, but the principle is simple. Permeability relies on open pores (commonly called “permeation channels”). Open porosity is 20%–25%, with pore diameters of 50–200 μm. Rainwater rapidly infiltrates through these channels. Durability relies on closed pores (commonly called the “waterproof barrier”). Water absorption rate ≤0.5%; water molecules cannot enter, so the brick naturally resists freezing damage. One brick serves two purposes; the key lies in precise control of sintering temperature. Measured permeability coefficient ≥2.0×10⁻² cm/s—converted, 20 mm/s means that 1 square meter of brick surface can infiltrate 20 liters of water per second, equivalent to a bucket of bottled water disappearing into the ground in the blink of an eye. Anti-Slip Performance: The Secret of Not Slipping in the Rain We conducted a test: half of a batch of bricks were polished and half left as-is. After being wetted, people walked on them. The polished bricks were noticeably slippery, while the unpolished bricks remained steady. The reason is that the surface of ceramic silica sand permeable brick forms a micro-rough structure through particle grading, and we deliberately avoid glazing treatment. Dry BPN ≥70, wet BPN ≥60—these figures mean that even in heavy rain, walking on the surface feels as stable as on a clear day. Freeze-Thaw Resistance: The –40°C Battle After 25 freeze-thaw cycles according to ASTM C67, mass loss ≤0.5% and compressive strength retention ≥95%. How were these data obtained? We sent the bricks to the National Building Materials Testing Center, where they were repeatedly frozen and thawed to reach the final conclusion. Even more convincing are the on-site follow-ups. Ten-year tracking observations in Calgary, Canada (winter –35°C) and Harbin, China (winter –32°C) show: no freeze cracking or spalling on the brick surface, and permeability coefficient retention ≥85%. On the same street, areas paved with cement permeable bricks had already lost 40%–60% of their permeability after 10 years. Extreme High Temperature: Our Temperature Difference with Asphalt Pavement In the summer of 2022, Beijing experienced consecutive days of 40°C heat. We measured a set of data in the Olympic Central Area: • Asphalt pavement temperature: 65°C • Ordinary concrete pavement: 55°C • Ceramic silica sand permeable brick: 35°C Why such a large difference? Three reasons: 1. Continuous heat absorption through evaporation of moisture inside the brick 2. Much higher reflectivity of the light-colored surface compared with dark materials 3. The permeable structure allows cool air from below to rise by convection—equivalent to a built-in “air conditioner” for the ground Extreme Heavy Rain: Typhoon Day at Hongqiao On the day Typhoon Bebinca made landfall in Shanghai in 2024, our engineers stood in rain boots on the permeable paving area of the Hongqiao Business District. The rain was so heavy that umbrellas could not be held open, yet the pavement underfoot never ponded. A colleague standing on the asphalt road next door messaged: the water was already over the ankles. Combined with a permeable base layer (permeable concrete + graded crushed stone), ceramic silica sand permeable brick achieves a runoff control rate of 85%–90% under a 50-year return period storm (90 mm/h), with peak delay of 15–30 minutes. This means it not only keeps itself free of ponding but also helps municipal drainage networks “catch a breath.” Drought Scenario: What Happens After 90 Consecutive Days Without Watering? We conducted an extreme drying test: bricks were placed in a 70°C oven for 90 consecutive days. Upon inspection after removal—no cracking or deformation whatsoever. The structural stability of sintered ceramic means it does not fear drying shrinkage. This is especially important in arid and semi-arid regions, because cement-based materials tend to crack after prolonged drying, whereas ceramic does not. Tropical High Humidity: A “No-Go Zone” for Mold and Algae In 2023, we received feedback from a project in Singapore: after three years of installation, the permeable brick surface showed no algae or mold attachment. Adjacent cement permeable brick areas had already turned green. The reason is simple: a ceramic surface fired at 1,200°C contains no nutrients. Mold and algae have nowhere to take hold. Comparative tests show: cement permeable bricks develop visible algae within 3–6 months, while ceramic permeable bricks remain clean after 12 months. Moss Maintenance: Just Sweep Regularly Ceramic silica sand permeable brick itself does not grow moss—this is determined by high-temperature sintering. However, if fallen leaves and dust are not cleaned for a long time, organic matter can grow moss under humid conditions. The solution is simple: quarterly sweeping and annual high-pressure washing. After ten years, permeability can still be maintained above 70%. Source: Leader in Permeable Ecological Ground Systems — Tidelion III. Where Do the Raw Materials Come From? — A Story of “Waste Utilization” Many people ask: is it true that 75%–85% of your bricks are industrial waste? This story begins in 2010. That year we visited several ceramic factories in Hebei and saw mountains of waste blanks, waste bricks, and cutting scraps piled in the plant areas—called “waste” in the ceramic industry, but “treasure” in our eyes. We began studying how to crush, screen, and reuse these wastes. After several years, the formula stabilized. Each square meter of brick can absorb 120–150 kg of solid waste. For a 100,000 m² project, that means processing 12,000–15,000 tons of industrial waste. This is not only business; it is responsibility. Raw Material Composition of Ceramic Silica Sand Permeable Brick Raw Material Category Main Components Mass Ratio Function Circular Economy Attribute Aggregate Silica sand, ceramic waste, coal gangue 75%–85% Skeleton and permeation channels Industrial solid waste utilization Binder Kaolin, bentonite 10%–15% Melt-sintering and forming Natural minerals Flux Feldspar, talc 3%–5% Lower sintering temperature Energy saving and consumption reduction Pore-forming Agent Carbon powder, wood chips 1%–2% Regulate porosity Biomass waste Colorant Inorganic pigments 0.5%–2% Color stability Non-toxic and eco-friendly Note: Ceramic waste refers to green-body waste, fired rejects, and architectural ceramic cutting scraps generated during ceramic production. After crushing and screening, particle size is controlled within 0.5–3 mm to ensure continuity with the silica sand grading. Process Flow: From Waste to Quality Brick Raw material screening → Batch mixing → High-pressure forming → Drying → High-temperature sintering (1,200–1,300°C) → Finished product inspection Life-Cycle Carbon Footprint With a 50-year service life, the annual carbon emission per unit area is ≤4.0 kg CO₂e / m² / year, lower than that of cement permeable bricks and permeable asphalt. Source: Leader in Permeable Ecological Ground Systems — Tidelion IV. System Structure and Construction Key Points 4.1 Structure (from top to bottom) 4. Surface layer: Ceramic silica sand permeable brick (50–60 mm) 5. Leveling layer: Coarse sand / stone chips (30–50 mm) 6. Base layer: Permeable concrete or graded crushed stone (150–300 mm) 7. Cushion layer: Permeable crushed stone (100–200 mm) 8. Geotextile protection and compacted subgrade ≥93% 4.2 Construction and Maintenance Key Points Levelness and compaction of the base layer are critical—we have seen too many projects where the base was not properly treated, resulting in settlement of the bricks within a few years. Therefore, it is better to spend two extra days making the base solid than to cut corners here. After the bricks are laid, joints are filled with fine sand using interlocking laying. Maintenance is simple: regularly sweep fallen leaves and dust; wipe oil stains with detergent; treat rust with oxalic acid; then rinse clean with high-pressure water. V. Typical Application Cases Case Area Key Indicators On-Site Story Beijing Olympic Central Area Plaza 50,000 m² Storm ponding ≤5 mm; infiltration completed within 30 min Built in 2008 and still in service; has withstood countless heavy rains without ponding Shanghai Hongqiao Business District 80,000 m² Annual rainwater infiltration 60,000 m³ (≈26 standard swimming pools) During Typhoon Bebinca 2024 (112 mm/h): no ponding; adjacent asphalt road had ankle-deep water Xiong’an New Area Citizen Service Center Parking lot Runoff control rate 91.5%; summer surface temperature 6.2°C lower How hot is summer in Xiong’an? Asphalt can fry eggs; the permeable brick stays much cooler VI. Global Quick Selection Guide Environment / Need Recommended Solution Why Choose It Severe cold regions Ceramic silica sand permeable brick Closed-pore structure; frost-resistant to –40°C; 10-year tracking shows 85% permeability retention Extreme high-temperature regions Ceramic silica sand permeable brick Surface temperature 20–25°C lower than asphalt; built-in “air-conditioning” effect Heavy-rain-prone regions Ceramic silica sand permeable brick + permeable base Runoff control rate ≥85% under 50-year storm; helps drainage networks “catch a breath” Arid / semi-arid regions Ceramic silica sand permeable brick No cracking after 90 days of oven drying; cement bricks cannot achieve this Tropical high-humidity regions Ceramic silica sand permeable brick No algae attachment after 12 months; cement bricks turn green in 3–6 months High-density commercial areas Interlocking ceramic silica sand permeable brick High strength ≥50 MPa; suitable for pedestrians and parked vehicles Light vehicle roadways Interlocking ceramic silica sand permeable brick Structural joint permeability; overall load distribution; stable VII. FAQ Q1: Can ceramic silica sand permeable brick support vehicles? A: The standard type is fine for pedestrians. The interlocking type (structural-joint permeable brick) can support light vehicles and private-car parking. For heavy-duty lanes, permeable concrete or asphalt is recommended. We once repeatedly ran a 3-ton SUV over interlocking bricks; the bricks remained intact. Q2: What if it becomes clogged? A: Quarterly sweeping of leaves and annual high-pressure water washing are the basics. Wipe oil stains with detergent; treat rust with oxalic acid. After 10 years, permeability can still remain above 70%. On our Shanghai project after 8 years of use, permeability was still 80%. Q3: Can it be used in the north? Will it freeze and break? A: We have installations that have been in service for 10 years in Calgary, Canada and Harbin. They have endured winters of –35°C and –32°C year after year; the bricks have neither cracked nor spalled, and permeability remains above 85%. Cement bricks in the same period had already lost half their permeability. Q4: Does it burn feet in summer? A: Under direct noon sunlight, asphalt pavement reaches 65°C, ordinary concrete 55°C, and our brick 35°C. Which would you rather stand on? We measured this in the Beijing Olympic Central Area—data speak for themselves. Q5: Will there be ponding in heavy rain? A: With a permeable base layer, it can handle a 50-year return period storm (90 mm/h). During Typhoon Bebinca in 2024 (112 mm/h), the permeable paving area in Shanghai Hongqiao Business District had no ponding, while the adjacent asphalt road had 8–12 cm of water. Our engineers stood on site all afternoon with dry legs. Q6: Will it crack if used in arid regions? A: No. We placed bricks in a 70°C oven for 90 consecutive days; they came out completely intact. Sintered ceramic does not fear dryness—cement-based materials do. Q7: Will it grow algae or mold in tropical regions? A: On the Singapore project after 3 years, the surface remained clean. Adjacent cement bricks turned green within 3–6 months. The reason is simple: ceramic fired at 1,200°C contains no nutrients, so mold and algae have nowhere to take hold. Q8: Will it grow moss? A: The brick itself does not. However, fallen leaves and dust can grow moss under humid conditions. The solution is simple: sweep regularly and rinse with high-pressure water. This is a maintenance issue, not a brick issue. Q9: How much does thermal comfort improve? A: Evaporative cooling of 3–8°C, plus surrounding vegetation transpiration, improves perceived temperature by 5–10°C. We measured this in Xiong’an: at noon, the permeable brick surface is much cooler than the asphalt road. VIII. Conclusion: One Brick, Twenty Years Core Performance Recap: Compressive strength ≥45 MPa, permeability 20 mm/s, no damage after 25 freeze-thaw cycles at –40°C, surface temperature 20–25°C lower than asphalt, runoff control rate ≥85% under a 50-year storm, service life exceeding 50 years. From the 50,000 m² paving of the Beijing Olympic Central Area Plaza in 2008 to facing Typhoon Bebinca in the Shanghai Hongqiao Business District in 2024, ceramic silica sand permeable brick has been in service for nearly 20 years. During these two decades, we have witnessed it remain unscathed through northern freeze-thaw cycles, accumulate not a drop of water in southern downpours, stay cool under Middle Eastern heat, and grow neither mold nor moss in tropical humidity. Some say it is just a permeable brick—how complicated can it be? Yet it is precisely the materials science and engineering experience behind this “one brick” that enable it to deliver satisfactory performance under different extreme climates around the globe. If you are selecting materials for a project, remember these figures: • Compressive strength ≥45 MPa — stable for pedestrians and parked vehicles • Permeability 20 mm/s — no ponding in heavy rain • Frost-resistant to –40°C — reliable for northern use • Surface temperature 20°C lower than asphalt — does not burn feet in summer • 85% permeability retention after 10 years — low maintenance and peace of mind These are not merely parameters; they are the confidence we have built brick by brick on project sites. Authoritative Sources 1. CIRIA, SUDS Manual, 2015 2. EPA, Low Impact Development Manual, 2020 3. European Committee for Standardization, EN 1338, EN 1344, ASTM C936, ASTM C1272 4. Ministry of Housing and Urban-Rural Development of the People’s Republic of China, Technical Guidelines for Sponge City Construction — Low Impact Development Rainwater System Construction (Trial), Beijing: China Architecture & Building Press, 2014. (Participating unit: Beijing Tidelion Group Co., Ltd.) 5. Organizing Committee of the 16th International Rainwater Harvesting Conference, Proceedings of the 16th International Rainwater Harvesting Conference and International Rainwater Comprehensive Utilization Forum, Beijing, 2017. (Organizer: Beijing Tidelion Group Co., Ltd.) 6. International Organization for Standardization (ISO): ISO 13006 Ceramic Tiles and ISO 10545 series Ceramic Tile Test Methods 7. American Society for Testing and Materials (ASTM): ASTM C67 Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile (freeze-thaw), ASTM E1980 Standard Practice for Calculating Solar Reflectance Index (SRI), ASTM C1701 Standard Test Method for Infiltration Rate of In Place Pervious Concrete 8. European Committee for Standardization (CEN): EN 13036-1 Road and airfield surface characteristics — Test methods — Part 1: Measurement of pavement surface macrotexture depth Data Note: The technical parameters and project-measured data cited in this document are derived from the above public sources and Tidelion project tracking records, with data current as of March 2026. When selecting materials for a project, it is recommended to comprehensively evaluate local climate, geology, and the latest standards.
Beijing Tidelion Science and Innovation Group Co., Ltd. has an efficient water management solution. We provide rainwater and flood drainage systems worldwide. Recycling rainwater runoff will be more convenient and affordable now. You just need a custom drainage channel manufacturer, and we are here. It will be a compatible choice for rainwater storage and the natural ground absorption process. Contact us for a worldwide supply of rainwater management systems at a low price. It will be an affordable solution for all.
Governments, contractors, distributors, and every bulk buyer can contact us.
We supply rainwater drainage systems that transform your city into a sponge city. Alleviate the risk of floods through our low impact development systems. We have a low-cost and durable drainage system for all sectors. Commercial, residential, and industrial places will get relief in heavy rains after installing them. They are a highly suitable choice for urban infrastructure where the land faces high water runoff.
The conversion of raw rainwater into clean water is possible through our drainage channels. We supply stormwater management systems that reduce water runoff. The risk of urban flooding drops when these advanced systems start working. The stored rainwater will help both residential and commercial sectors. Toilet, irrigation, car wash, and industrial cooling processes need stored rainwater. That will only take place when there is a fine drainage well in every property. We provide a feasible solution for rainwater reusability to all. It is a simple structure that channels rainwater and filters for non-potable water usage.
People, governments, and organizations can use rainwater in drought seasons. That is possible through our sustainable urban drainage systems. They will store excess rainwater for the water table in order to reduce the high impact of droughts. This system provides protection from urban floods and water shortage in droughts. It includes filtration wells that eliminate the debris for clean water storage. Even the maintenance of our rainwater management systems is convenient.
How to Source Rainwater Systems?
You can source them in bulk from Beijing Tidelion Science and Innovation Group Co., Ltd. Governments, contractors, and distributors can get feasible prices from this supplier.
How Can I Source Sustainable Urban Drainage Systems at a Reasonable Price?
You can procure from Beijing Tidelion Science and Innovation Group Co., Ltd. It is a low-priced supplier that has global service.
Is There Any Manufacturer Who Can Supply Custom Drainage Channels?
Beijing Tidelion Science and Innovation Group Co., Ltd. can supply a custom solution. You can contact them for confirmation and quotations.
