Overview
Lychee-pattern ecological brick is a specialized paving material engineered for sustainable urban development. Its distinctive rough surface, inspired by lychee fruit skin, offers both functional and aesthetic advantages. Designed to align with modern ecological construction standards, it facilitates stormwater management through high permeability while reducing surface runoff. Unlike conventional paving, this brick promotes groundwater recharge and mitigates flooding risks. It is widely adopted in China's 'sponge city' projects and has gained international attention for its balance of practicality and environmental responsibility. The texture also provides tactile cues for visually impaired pedestrians.
Product Features
The brick's lychee-like texture is achieved through mechanical abrasion or mold casting, creating a surface with 1–3mm peaks that enhance slip resistance (friction coefficient ≥0.6). This makes it suitable for wet environments like pool decks or rainy regions. Its open-cell structure allows water infiltration rates up to 0.3cm/s, significantly higher than traditional asphalt. Most variants incorporate 30–50% recycled materials, reducing carbon footprint. The bricks typically withstand 50+ freeze-thaw cycles and exhibit compressive strengths of 30–50MPa, ensuring longevity in diverse climates.
Main Uses
Primary applications include pedestrian walkways in eco-parks, residential courtyards, and commercial plazas where natural aesthetics are desired. Municipalities frequently specify these bricks for green belt projects and bicycle lanes due to their permeability compliance with stormwater regulations. In vertical applications, they serve as decorative facades for retaining walls. Some high-end variants integrate photocatalytic coatings to reduce air pollutants. The material is particularly popular in subtropical regions where both drainage performance and heat reflection (albedo ~0.4) are critical.
Culture and Development
The design originated in Guangdong Province, China, where lychee cultivation inspired the texture. Its development accelerated post-2015 with national policies promoting permeable pavements. Over 200 Chinese cities now mandate ecological bricks in public works. Modern iterations use industrial byproducts like fly ash or slag, aligning with circular economy principles. European adaptations often feature lighter colors to reduce urban heat absorption. The product category has spawned innovations like integrated solar cells for smart pathways while maintaining the classic lychee texture.
B2B Procurement Guide
Bulk buyers should verify third-party test reports for permeability, abrasion resistance (≤35mm/1000 rotations), and freeze-thaw durability. MOQs typically start at 500m², with lead times of 2–4 weeks for custom colors/thicknesses (common sizes: 200×100×60mm or 300×300×80mm). For export orders, confirm radiation certification (Class A materials required in EU/US). Container loading efficiency averages 70–80m² per 20'GP. Consider regional material standards—e.g., GB/T 25993 in China versus ASTM C936 in North America. Negotiate palletized packaging to minimize breakage during transit.
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