Method for preparing autoclaved aerated building block with high tensile strength and low shrinking by using waste spinning flax materials

Abstract

The invention discloses a method for preparing an autoclaved aerated block with high tensile strength and low shrinking by using waste spinning flax materials. The method comprises the following steps: (1) preparing raw materials for standby, wherein the prepared raw materials comprises coal ash, furnace dregs, ardealite, waste ramie, concrete, lime, aluminum powder paste, additives and the like; (2) utilizing a PLC (programmable logic controller) system to add the prepared materials into a mixing blender for pouring, wherein the ratio of coal ash to furnace dregs to ardealite to concrete to lime is 59.67:10.53:3:5.5:21.3, the aluminum powder is 0.06%-0.07% of the total weight of dry materials and the waste ramie is 0.025%-0.04% of the total weight of dry materials; and stirring the raw materials, pouring the mixture into a mould, standing in a procuring chamber, cutting and forming by using a PLC turning cutter set, processing in an autoclaved kettle which takes pressure saturated steam as a medium to produce an environment-friendly autoclaved aerated block with high tensile strength and low shrinking.

Description

technical field [0001] The invention relates to a production method of building material aerated blocks. Background technique [0002] At present, most of the wall materials used in buildings are brick masonry, and clay bricks account for more than 80% of the total wall materials, occupying a large amount of cultivated land every year, and destroying the ecological balance. There are more than 100,000 brick and tile enterprises in the country, covering an area of ​​about 5 million mu, and destroying nearly 100,000 mu of land every year. The development of new wall materials is already a major issue involving the national economy and people's livelihood. [0003] In order to promote the in-depth development of the circular economy in our city, our company is actively based on local resources, and effectively utilizes local fly ash, slag, phosphogypsum, waste hemp and other waste residues to replace clay solid bricks and products at the cost of destroying land resources. It h...

AI Technical Summary

Problems solved by technology

However, the autoclaved aerated concrete block itself has a large drying shrinkage value and a low tensile strength, which will easily cause a lot of inconvenience in practical applications.