Magnesium oxysulfate cement-based building block and production method thereof

Abstract

The invention discloses a magnesium oxysulfate cement-based building block. The magnesium oxysulfate cement-based building block comprises 100 parts of active magnesium oxide powder, 140-270 parts of a filler, 1-2 parts of a foaming agent and 200-600 parts of an aqueous solution of magnesium sulfate. The magnesium oxysulfate cement-based building block has small unit weight, and can effectively reduce the bearing of a building. The invention also discloses a production method of the magnesium oxysulfate cement-based building block. The production method comprises the following steps: 1, uniformly mixing 100 parts of the active magnesium oxide powder with 140-270 parts of the filler to obtain a first mixture; 2, adding 200-600 parts of the aqueous solution of magnesium sulfate to the first mixture, and uniformly mixing to obtain a second mixture; 3, adding 1-2 parts of the foaming agent to the second mixture, and uniformly mixing to obtain a third mixture; and 4, placing the third mixture in a die, and curing the third mixture to obtain the magnesium oxysulfate cement-based building block. The production method has the advantages of no high-temperature or high-pressure curing technology and low production cost.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a magnesium oxysulfate cement-based building block and a preparation method thereof. Background technique [0002] Building blocks are semi-finished products of building materials and are the basic unit blocks composing masonry components (walls, columns, etc.); currently commonly used building blocks include solid bricks, porous bricks, hollow bricks, shale bricks, silicic acid sintered from clay Salt bricks, autoclaved lime-sand bricks, fly ash aerated blocks, ceramsite hollow blocks, stone blocks, etc. However, the building blocks currently used have their own shortcomings; shale bricks, silicate bricks, and autoclaved lime-sand bricks are mostly bulky, resulting in excessive building loads; fly ash aerated blocks require high temperature and high pressure steam curing and other processes, the preparation process is more complicated. At the same time, ...

AI Technical Summary

Problems solved by technology

However, the building blocks currently used have their own shortcomings; most of the shale bricks, silicate bricks, and autoclaved lime-sand bricks have a large bulk density, resulting in excessive building loads; fly ash aerated blocks require high-temperature and high-pressure steam curing and other processes, the preparation process is more complicated

At the same time, most aerated blocks currently use physical foaming in the production process. Uneven foaming will affect the local strength of the block, and the foaming speed is slow and the cost is high.