What is the reason why stones fall off the permeable floor?

Permeable floor is also known as ecological permeable floor, permeable concrete, sand-free concrete, etc., is the use of bone gravel, glue, additives, cement, water, etc. after a uniform mixing, paved into the road surface. It has higher strength and durability than traditional concrete, the function of use and the requirement of service life, the coordination with the natural environment, the reduction of the load on the earth and ecological environment, the realization of the recyclable use of non-renewable resources, and the good use function, can build a gentle, comfortable and convenient living environment for human beings.
water-permeable floor can make rainwater penetrate the surface quickly, effectively replenish groundwater, alleviate the urban heat island effect, protect the city's natural water system from damage, has a strong environmental value

. At the same time, it solves the problem of easy water accumulation on ordinary road surface, improves the safety and comfort of walking, and is also of great significance to improve the living environment.
but we often find that some permeable floor laid for a period of time, has begun to drop stones, is the construction but off or its own quality problems?
is not, permeable floor in addition to the construction to pay more attention to, but also should pay attention to the maintenance of the later stage. The main reasons for the partial stone shedding of the permeable floor are the water-permeable crucity enhancer (glue material), the insufficient proportion of cement delivery or uneven mixing; Therefore, we should pay attention to the daily maintenance of the permeable floor.
permeable flooring because there are a large number of holes, volatile water, drying very quickly, so conservation is very important, especially early conservation, pay attention to avoid a large amount of water evaporation in the floor.
Usually the time of demolition of permeable concrete is shorter than that of ordinary concrete, so that its sides and edges will be exposed to air, the application of plastic film or strip cloth to cover the road surface and side in time to ensure that humidity and cement fully hydrated.
Permeable floor should be poured 1 day after the start of sprinkler conservation, watering should not use pressure column straight to the concrete surface, which will take away some cement slurry, resulting in some weaker parts, but can be directly from top to bottom in normal circumstances watering.
film is closed and tight, and the film cover maintenance must meet 7 days. At the same time, the watering maintenance time of the permeable floor should not be less than 7 days.
the use of qualified quality permeable crucive enhancer materials, enhancer and cement in accordance with the requirements of sufficient amount, fully stirred.
water conservation pressure should not be too large, it is strictly prohibited to spray directly with water pipes.
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