Environment-friendly aerated concrete block and preparation method thereof

Abstract

The invention relates to an environment-friendly aerated concrete block and a preparation method thereof and belongs to the field of building materials. The environment-friendly aerated concrete blockis prepared from the following raw materials in parts by weight: 70-80 parts of fly ash, 50-60 parts of building wastes, 30-36 parts of sands, 24-28 parts of fine sands, 62-68 parts of limes, 45-49 parts of gypsum, 26-36 parts of portland cement, 14-16 parts of aluminum powder, 5.4-6.0 parts of polycarboxylic series of water reducer, 6-12 parts of glycyl-D-leucine and 6-12 parts of 4-carboxyl benzocyclobutene. The environment-friendly aerated concrete block is uniform in interior air holes and consistent in water absorption rate, is relatively high in adhesion force to mortar which is smearedto the outer surface of the block and lowers the probability that the mortar falls off from the surface of the aerated concrete block.

Description

technical field [0001] The invention relates to the field of building materials, more specifically, it relates to a green environment-friendly aerated concrete block and a preparation method thereof. Background technique [0002] Air-entrained concrete is a light-weight, high-strength new building material, and blocks are one of the main products of air-entrained concrete. Aerated concrete blocks have gradually replaced traditional solid clay bricks and have been widely used due to their light weight, thermal insulation effect, and good sound absorption effect. The pores in the air-entrained concrete block account for about 60% to 70% of its volume, so the shape, size, quantity and distribution of the pores in the air-entrained concrete block almost determine most of the properties of the air-entrained concrete block, such as strength. , water absorption, heat preservation, etc. [0003] In the process of preparing air-entrained concrete blocks, an air-entraining agent is ...

AI Technical Summary

Problems solved by technology

This leads to inconsistent pore sizes in the prepared air-entrained concrete blocks, resulting in inconsistent water absorption of the air-entrained concrete blocks

[0004] In the process of using the aerated concrete block, this structure makes the moisture conductivity of the aerated concrete block worse, and it is not easy to wet the inside of the aerated concrete block even if it is watered

After watering, the water on the surface of the block evaporates quickly, but the inside is not wetted. After masonry or plastering, the block directly absorbs water from the mortar, which will cause local water loss at the contact between the mortar and the block Timely replenishment, resulting in dry delamination, resulting in a decrease in the bonding force between the mortar and the block

Plastering of exterior walls has a good waterproof effect, but when the mortar and blocks are not firmly bonded, damage such as hollowing and falling off will occur, which will cause rainwater to enter the wall along these defects and cause damage to the wall

Images