What are the characteristics of the roof grass grid?
Complete greening: the grass planting grid provides more than 95% of the grass planting area, and the greening effect is complete, which can absorb sound and dust and obviously improve the quality and taste of the environment. (Reference: Concrete grass-planting bricks have only 30% voids)
Save investment: Grass planting grid can combine parking and greening functions into one, which can save developers' valuable investment in a city with land and money.
Smooth and complete: the unique and stable flat-inserted lap joint of grass planting grid makes the whole pavement become a flat whole, avoiding local depression, and the construction is very convenient. (Reference: Each concrete grass-planting brick is independent, and the concrete cushion foundation must be poured to keep smooth. )
High strength and long service life: the grass planting grid adopts special materials with patented technology, and its compressive capacity is as high as 200 tons/square meter, which is 32 tons/square meter higher than the fire climbing surface required by the specification.
Stable performance, ultraviolet resistance, acid and alkali corrosion resistance, wear resistance and weather resistance -40℃-90℃. (Reference: Concrete grass-planting bricks are easy to crack and break when the temperature changes and frost)
Good drainage: The gravel bearing stratum provides a good drainage function, which is convenient for the discharge of excess precipitation.
Construction technology of roof grass grid
Foundation soil should be compacted by layers, and the compactness should reach more than 85%; If it belongs to soft plastic-flowing plastic silt layer, it is recommended to throw and fill the block stones and compact them. Set 150 thick sand cushion. The concrete method is as follows: mix 10% medium-coarse sand, 60% crushed stone with particle size of 20-40 and 30% cohesive soil evenly, spread and roll until dense. Set a stable layer (also as a planting layer) with a thickness of 60. The method of stabilizing layer is: 25% crushed stone with particle size of 10-30, 15% medium-thick river sand, 60% cultivated soil mixed with appropriate amount of organic fertilizer, evenly mixed, and compacted on sand and gravel cushion, which can be used as the base of grass planting grid. Sprinkle a little organic fertilizer on the grass roots and pave the grass grid artificially. The shape and size of the grass grid are designed according to the size of the roof, and it is generally not necessary to cut when laying; When the roof has special shape requirements, grass squares can be cut to meet the requirements of different shapes of the roof. Sprinkle the planting soil into the concave planting groove of the grass planting grid, and sweep it evenly into the holes of the grass planting grid with a broom. The height of soil layer is 5 5- 10/0mm lower than the grass planting grid plane. Spread turf or sow seeds on the planting soil layer of grass squares. When laying turf, the turf should be pressed against the planting soil.
Above, we can see our program mainly analyzing the grass grid on the roof. As the name implies, the roof grass grid is to lay a lawn grid on the roof. Grass lattice is waterproof because plants themselves have the ability to absorb water. Today, we analyzed the characteristics of the grass grid on the roof. In fact, the grass grid can be applied not only to roofs, but also to parking lots or sidewalks. We also analyzed how the grass grid should be constructed, so that everyone can understand.
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