Unburned and non-autoclaved caustic calcined dolomite brick and building block

Abstract

The invention relates to an unburned and non-autoclaved caustic calcined dolomite brick and building block, which comprises the following components in part by weight: 5 to 40 parts of caustic calcined dolomite powder, 4 to 35 parts of conditioner solution, 5 to 85 parts of aggregate, 0.01 to 8 parts of water-resistant admixture, 1 to 50 parts of industrial residues, 1 to 30 parts of reinforcing and thickening agent and 0.01 to 0.5 part of water reducing agent. The unburned and non-autoclaved caustic calcined dolomite brick and building block has the advantages of greatly utilizing the industrial residues and agricultural wastes, saving resources and energy and not producing emissions of waste gas, wastewater and the industrial residues, along with freeness of burning, vapor-free or autoclaving-free maintenance, high normal temperature reaction and curing speed, strong strength, high water resistance, no absorption of moisture and separation of halide, no scumming, resistance to frost, acoustic insulation, thermal insulation, heat preservation, fire retardance and the like.

Description

technical field [0001] The invention relates to a non-burning and non-steaming brick and building block, in particular to a light-burned dolomite non-burning and non-steaming brick and building block with water resistance. Background technique [0002] For thousands of years, clay bricks have been the main building block in our country. Clay bricks must be sintered before they can be used. In the process of making sintered clay bricks, a large area of ​​cultivated land is destroyed, a large amount of energy is consumed, and a large amount of CO is emitted. 2 and SO 2 and other gases, aggravating the greenhouse effect and environmental pollution. In order to save resources and protect the environment, the country has long ago decided to ban the use of solid clay bricks in domestic large and medium-sized cities; by the end of 2010, all cities and towns across the country will completely ban the use of solid clay bricks. [0003] In order to protect cultivated land, Chinese ...

AI Technical Summary

Problems solved by technology

However, in the aforementioned patented products, when magnesium oxide and magnesium chloride solution were used as cementing materials, the hydration product after the reaction of magnesium oxide and magnesium chloride solution did not have the shortcoming of water resistance, and other components in the above-mentioned patented product were hydrated by this. None of the products have substantial protection against water, thus limiting the scope of application of the products, and during long-term use, due to the erosion of the hydration products by the humid atmosphere and rain, the erosion products will also cause the products to absorb moisture and return to brine And frost, eventually lead to product powdering, loss of strength, loss of use value, affecting the service life of the building

In addition, the sources of magnesium oxide in the above patented products are concentrated in Haicheng City, Dashiqiao City, Liaoning Province, and Laizhou City, Shandong Province. They are obtained by calcining magnesite. On the one hand, due to geographical restrictions, it is difficult to promote and apply nationwide , on the other hand, it consumes a lot of precious magnesite resources in our country

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