Pavement brick prepared by recycling building materials, and preparation method thereof

Abstract

The present invention provides a pavement brick prepared by recycling building materials, and a preparation method thereof, and relates to the technical field of pavement brick production, wherein the pavement brick comprises 20-25 parts of cement, 15-20 parts of waste building fine aggregate, 6-10 parts of waste building coarse aggregate, 0.5-1.5 parts of an aggregate modifier, 3-6 parts of nanometer silica, 2-5 parts of titanium dioxide, 10-15 parts of steel slag, 5-7 parts of polyamide, 0.2-0.5 part of water reducer, 0.5-2.5 parts of an anti-freezing agent, 0.3-0.5 part of pigment powder, and 4-6 parts of water. The preparation method comprises: (1) mixing and stirring waste building fine aggregate, waste building coarse aggregate, nanometer silica, titanium dioxide and steel slag, adding an aggregate modifier, and stirring to obtain a mixture; (2) adding polyamide, cement, a water reducer, an anti-freezing agent and pigment powder to the mixture, stirring, adding water, stirring to obtain a mixed slurry, and carrying out molding treatment; and (3) curing. The pavement brick of the present invention has advantages of energy saving, environmental protection, good water permeability, high compressive strength, high flexural strength, poor freezing resistance, vehicle tail gas degradation, and ultraviolet radiation resistance.

Description

technical field [0001] The invention belongs to the technical field of pavement brick production, and in particular relates to a pavement brick and a preparation method thereof for recycled and reused building materials. Background technique [0002] Construction waste materials are the main component of urban waste, accounting for about 30%-40% of the total urban waste. In 2004 alone, my country produced about 6 billion tons of construction waste, and the data from 2008 to 2011 must be far greater than this. At present, construction waste is mainly treated by traditional open-air stacking and deep excavation and landfill. Although this method has a large processing capacity, is convenient and simple, and has low processing costs, it actually occupies a large amount of land resources and causes irreversible environmental pollution. [0003] Automobile exhaust is increasing day by day in cities, and the nitrogen oxides emitted seriously affect human health. Titanium dioxide...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems that the existing pavement bricks cannot be reused by waste, have poor water permeability, low compressive strength, low flexural strength, poor frost resistance, cannot degrade automobile exhaust and have no anti-ultraviolet radiation effect, the purpose of the present invention is to Provided are pavement bricks for recycled building materials and a preparation method thereof. The pavement bricks for recycled and reused building materials are energy-saving, environmentally friendly, good in water permeability, high in compressive strength, high in flexural strength, poor in frost resistance, and energy-saving. Advantages of degrading automobile exhaust and having anti-ultraviolet radiation

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