Composite water permeable brick and preparation method thereof

Abstract

The invention discloses a composite water permeable brick. Hydrophilic resin with a good water permeable performance is picked, thus the surface of the prepared composite water permeable brick is compact and water permeable, the brick has a very strong water permeable property, the water permeable property is effectively improved, the water permeation is not relied on large gaps, moreover, the brick is not easily obstructed by dusts; the weatherability is good, the cost is low, the long-term water permeability is good, the strength is high; the water permeable brick is environmentally friendlyand energy saving; at the same time, the surface layer and the base layer are firmly bonded, the warping and deformation are effectively inhibited, and the composite water permeable brick has excellent comprehensive mechanical strength. The composite water permeable brick can be widely applied to gardens, streets, houses, and buildings, is beautiful and durable, beautifies the city environment, is thermal insulating, saves the energy, can also be applied to a rainwater collection system, can collect, filter, and purify rainwater, fully utilizes the rainwater resource, is capable of absorbingdusts and fixing sand, improves the air quality, and can be used to purify lake water and river water.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a composite permeable brick and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, more and more urban surfaces are covered by airtight and hardened materials such as concrete, cement, asphalt, bricks, and slates, which hinder the circulation of water and heat on urban road surfaces, causing problems such as urban waterlogging and heat island effects. Therefore, in order to solve the problem of closed urban roads, maintain the urban ecological balance, and respond to the national policy of "strengthening the construction of sponge cities", people have developed permeable bricks. [0003] At present, the permeable bricks on the domestic market mainly include ceramic permeable bricks, resin-bonded sand-based permeable bricks, permeable concrete and composite permeable bricks. Ceramic permeable bricks need to m...

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Problems solved by technology

Ceramic permeable bricks need to mine a large amount of ceramic raw materials, destroying the ecological environment, and this kind of permeable bricks generally need to be sintered at a high temperature above 1000 ° C, the process is complicated, and the cost is high; resin-bonded sand-based permeable bricks use resin as a binder. The product is expensive and easy to age; permeable concrete is permeable through the large pores between the aggregates, the surface is not beautiful, and the particles on the surface are coarse, the water is permeable by the large pores on the surface, the porosity is above 20%, and it is easy to be blocked by dust Therefore, the high water permeability cannot be maintained continuously; and because of the large gap, the effect of water filtration is poor; at the same time, the color of the concrete permeable brick is single, the surface is rough, not beautiful, the strength is low, and it is easy to damage

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