Self-cleaning water permeable brick and preparation method thereof

Abstract

The invention discloses a self-cleaning water permeable brick comprising a surface material and a base material. The base material is weighed according to weight percentage, comprising 68.4 percent to 77.5 percent of rubble or building rubbish granule or slag, 10 percent to 25 percent of cement, and 5.3 percent to 12 percent of water. The surface material is weighed according to weight percentage, comprising 66.7 percent to 71.8 percent of high-intensity sand, 10.8 percent to 26.5 percent of cement, 3.4 percent to 10.4 percent of water, and 0.1 percent to 1.0 percent of nanometer titanium dioxide. The surface material and the base material are compacted together to form an integrated water permeable brick. The invention further discloses a preparation method of the self-cleaning water permeable brick. The method comprises the following steps: 1) the base material and the surface material are weighed, respectively premixed and then stirred as raw materials for standby application; 2) molding is carried out; 3) steam curing is carried out; and 4) liquid titanium dioxide is sprayed. Road surfacing of the self-cleaning water permeable brick in the invention can reduce water permeable hole plugging and surface pollution, thereby having the effects of road surface temperature decrease and high-efficient sterilization, regaining circulatory system of natural soil air and water, preventing soil pollution and improving ecological environment.

Description

technical field [0001] The invention relates to a self-cleaning permeable brick and a preparation method thereof. Background technique [0002] Urban roads and squares are mostly paved with water-blocking materials such as traditional cement block bricks and ordinary ceramic sintered bricks or granite, marble, glazed bricks, cement and asphalt. Due to the impermeable concrete pavement, asphalt pavement and the intercepting surface of various houses and buildings, the penetration of rainwater is blocked. In addition, due to the long-term excessive development of water resources and successive years of drought in various cities, urban groundwater resources have declined year by year, resulting in urban groundwater pollution. bit dropped drastically. A funnel zone formed by a sharp drop in the groundwater table and triggering an uneven drop in the ground. At the same time, with the continuous increase of urban population and the continuous expansion of construction areas, mos...

AI Technical Summary

Problems solved by technology

At the same time, with the continuous increase of urban population and the continuous expansion of construction areas, most of the land will be closed by road squares paved with urban buildings and cement, so that precious natural precipitation cannot penetrate into the soil, and the increasingly depleted groundwater resources have to be At the same time, it increases the load of the municipal drainage system, which restricts the sustainable development of urban construction.

[0003] First of all, it may affect urban flood drainage. When it rains, such a ground will prevent the infiltration of rainwater, so that the city will be flooded with water when it rains. When it does not rain, the ground will be extremely dry and dusty; secondly, such a ground will reflect a lot , retain and then release the sun's radiation, thus greatly increasing the city's heat island effect, greatly reducing the comfort of the urban environment, and at the same time making it difficult for suspended particles in the air to settle; this type of ground will also block the rainwater from directly replenishing groundwater This kind of ground directly affects the health of urban vegetation, blocking the circulation of underground soil, ground vegetation, and water vapor, making it difficult for water to Reaching the root of the plant, it will eventually cause the root to suffocate and dehydrate and die, so that the whole plant will die, let alone the ability of the soil to purify the environmental pollution.

[0004] The current floor tiles are developing in the direction of high density and high strength, and their compressive strength is relatively high, but the biggest problem is that the water permeability is very poor. Even if there are bricks with good water permeability, their compressive strength cannot reach the pavement pavement Requirements; At the same time, after long-term use of permeable bricks, the surface and pores are easy to fall into various dirt to form blockages and cannot be removed automatically, which weakens the permeable effect and poor ecological effect, and the requirements for drainage facilities are high during use. If the drainage is not smooth after the rain, it is easy to cause water accumulation, which is not conducive to sanitation, damages the environment, and creates obstacles for people to travel