Permeable brick capable of adsorbing automobile exhaust by adding porous filler

Abstract

The invention discloses a permeable brick capable of adsorbing automobile exhaust by adding porous filler. The permeable brick is prepared from the following raw materials in parts by weight: 40-43 parts of granite leftover waste materials, 30-32 parts of waste concrete, 20-22 parts of 42.5 grade common silica cement, 2-2.5 parts of a polyester-cotton fabric leftover material, 0.1-0.12 part of an epicholorohydrin-dimethylamine polymer, 0.3-0.4 part of an early strength polycarboxylate superplasticizer, a proper amount of water, 5-6 parts of Na-montmorillonite, 5-6 parts of attapulgite, 0.5-0.6 part of micro wood flour particles, 0.8-1 part of polyvinylpyrrolidone, 0.5-0.6 part of cetyl trimethyl ammonium bromide and a proper amount of deionized water. The permeable brick prepared through high-temperature sintering is great in porosity and excellent in adsorbability, can adsorb components such as automobile exhaust and PM2.5 in air, reduces pollutants in pavement air, realizes double functions of water permeability and purification, and is wide in application prospect.

Description

technical field [0001] The invention relates to the technical field of permeable bricks, in particular to a permeable brick added with porous fillers capable of absorbing automobile exhaust. Background technique [0002] In recent years, during the rainy season, the phenomenon of "watching the sea" has occurred frequently in major cities. Permeable ground has attracted more and more attention from researchers because of its advantages of alleviating the flood discharge pressure of urban drainage systems, replenishing groundwater resources, improving the living conditions of urban surface plants and soil microorganisms, making groundwater easy to evaporate and eliminating the urban heat island effect. Permeable pavement facilitates air and moisture circulation, eliminates the heat island effect, and absorbs and reduces noise. Permeable pavement bricks are the main components of urban permeable pavement, mainly including cement-based permeable concrete bricks, polymer permeab...

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Problems solved by technology

[0003] In the article "Research on Optimizing the Production of Permeable Bricks Using Waste Concrete", waste concrete was used to replace natural aggregates, and the orthogonal design test method was used to analyze aggregate particle size, bone-to-cement ratio, water-cement ratio, and water reducing agent, silica fume and waste concrete. The influence of different dosages on the strength and water permeability coefficient of permeable bricks was obtained, and the optimal mix ratio was obtained. The strength of permeable bricks made with the strengthening of recycled aggregates and the improvement of curing methods was improved, which met the laying requirements and realized the waste Utilization, energy saving and emission reduction, but due to the limited increase in strength and the fluidity of concrete, slurry sinking is prone to occur when the brick body is formed, blocking the seepage channel affects water permeability, and the cement layer is due to slurry, the joints at the joints The cement layer will become thinner, which is not conducive to the development of brick strength