Cement-free calcination-free shale pressing bearing brick and preparation thereof

Abstract

The invention relates to a cement-free and baking-free shale suppression bearing brick and a manufacturing method thereof, which relates to a construction-used bearing brick and a manufacturing method thereof. Ordinary shale is used as main raw material and various 'wastes' are used as ingredients in the method; no open fire, waste gas, ash or waste water is produced in the manufacturing process which ensures low water and electricity consumption; various primary technical performances of a product are excellent. The method comprises steps that: (1) the materials are prepared according to following weight ratio: 40 to 50 percent of shale rock, 20 to 21 percent of auxiliary material, 4 to 6 percent of taillings powder, 7 to 9 percent of heavy calcium carbonate, 4 to 6 percent of gravel soil, 3 to 4 percent of alkali residue, 4 to 7 percent of construction waste, 5 to 6 percent of MSH polymerization condensate material especially used for shale and proper amount of water; (2) raw material treatment; the primary material and the auxiliary material are grinded; (3) ingredient stirring; (4) well-proportioned mixing and ageing; (5) mulling and plasticizing; (6) suppressing and forming; (7) steaming, pressing and solidification into finished product. The practice of the invention is environment friendly, and the quality of manufactured products is excellent, which reaches the standard of the bearing brick but has low cost and can be taken as the bearing brick for replacing a clay brick.

Description

Technical field: [0001] The invention relates to a load-bearing brick for building and a manufacturing method thereof. In particular, a cement-free and roasting-free shale pressed load-bearing brick and a manufacturing method thereof. Background technique: [0002] The traditionally used "fired clay brick" not only consumes a lot of land, but also consumes a lot of coal. With the continuous development of civil engineering, it will cause a lot of waste of resources. [0003] In order to save natural resources, there have been many "new transformations" that do not use soil. These products can be roughly divided into two categories, namely: "cement pressed non-load-bearing bricks" and "composite material sintered non-load-bearing bricks", "cement pressed non-load-bearing bricks" need to consume cement, while "composite material sintered non Sintering is required, which still consumes energy and increases costs in the sintering process. In particular, the technical performa...

AI Technical Summary

Problems solved by technology

These products can be roughly divided into two categories, namely: "cement pressed non-load-bearing bricks" and "composite material sintered non-load-bearing bricks", "cement pressed non-load-bearing bricks" need to consume cement, while "composite material sintered non Requires sintering, which still consumes energy and increases costs in the sintering process

In particular, the technical performance of "cement pressed non-load-bearing bricks" and "composite sintered non-load-bearing bricks" cannot meet the requirements of load-bearing technical indicators. When used in buildings, frame structures must be used, which increases construction costs. Compared with the clay fired bricks, the cost per square meter is hundreds of yuan higher, which is completely inconsistent with the general trend of the development of the construction industry and the fundamental interests of builders and home buyers