Anti-seepage waterproof anti-cracking unfired hollow brick and preparation method thereof

Abstract

The invention discloses an anti-seepage waterproof anti-cracking unfired hollow brick. The invention is characterized in that the unfired hollow brick is prepared from the following raw materials in parts by weight: 30-35 parts of coal gangue, 10-12 parts of ordinary Portland cement, 1-1.2 parts of alunite powder, 1-1.5 parts of sodium pyrophosphate, 3-5 parts of emulsified asphalt, 0.8-1 part of 3% potassium methylsilicate, 15-18 parts of limestone, 9-13 parts of intumescent vitrified microbead, 20-24 parts of clay, 15-18 parts of synergist and a right amount of water. The formula is scientific and reasonable; and under the combined actions of the alunite powder and cement, the mixture has favorable waterproof and anti-cracking effects. By adding the emulsified asphalt and 3% potassium methylsilicate, the brick has favorable waterproof and anti-seepage effects and favorable air permeability; and by compounding the intumescent vitrified microbead, the brick is air-permeable and thermally insulating. By adding the synergist, the brick has the characteristics of light weight, high strength, water resistance, thermal insulation and bacteria resistance. By adopting the unfiring technique, the brick has the advantages of energy saving, consumption reduction and emission reduction, and has favorable anti-seepage, waterproof, thermal-insulation, air-permeable and antiseismic effects.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an anti-seepage, waterproof, crack-proof, non-fired hollow brick and a preparation method thereof. Background technique [0002] The building wall is the main enclosure structure, the main component of energy consumption, and an important link to realize building energy saving. Among them, sintered bricks have been banned products by the state because they consume a lot of land resources and energy. Aerated concrete blocks have good sound insulation and self-insulation effects, so they have been vigorously developed. However, because the air-entrained concrete block has many pores, is not waterproof, and has poor frost resistance, it cannot be used for exterior walls; the surface is too smooth, and it is difficult to paint, which increases the difficulty of later construction; the pressure-bearing capacity is small, so it can only be used for filling walls, so Some restriction...

AI Technical Summary

Problems solved by technology

However, because the air-entrained concrete block has many pores, is not waterproof, and has poor frost resistance, it cannot be used for exterior walls; the surface is too smooth, and it