Phosphogypsum-based lightweight heat insulation self-leveling floor mortar and application

Abstract

The invention discloses phosphogypsum-based lightweight heat insulation self-leveling floor mortar, which comprises main materials and building admixture. The main material comprises building gypsum powder, lightweight aggregate, silicate cement, calcium carbonate powder, graded sand; the building admixture comprises a retarder, a water reducing agent, a water-retaining thickener and a leveling agent. According to the mortar provided by the invention, the dried breaking strength of the mortar provided by the invention can reach up to 7.0 Mpa, the dried compressive strength can reach up to 15.0Mpa or more, the dried tensile adhesive strength can reach up 1.1 Mpa and can meet the use requirements of most light load and medium load floors. The gypsum can be recycled, the solid waste furnacebottom slag of thermal power plant is used as the light aggregate, so that the cost is reduced.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a phosphogypsum-based lightweight thermal insulation self-leveling floor mortar and its application. Background technique [0002] The traditional artificial floor construction is to chisel the concrete ground and then carry out manual leveling construction. With the continuous increase of labor costs, self-leveling mortar has gradually become more competitive in terms of economy. Self-leveling mortar is a new type of ground mortar material, which is automatically leveled and dried quickly by virtue of the characteristics of fluid flow. Compared with manual ground leveling process, it saves materials and labor, and shortens the construction period. Traditional cement-based self-leveling mortar or gypsum-based self-leveling mortar has limited sources of raw materials, large quality differences, and high cost, which limits the promotion and use of self-leveling mortar....

AI Technical Summary

Problems solved by technology

[0003] In 2013, my country's phosphogypsum was 70 million tons, and the utilization rate of phosphogypsum was only 27%. If it cannot be fully utilized, phosphogypsum will not only occupy a large amount of land, but may also pollute soil and water sources, causing serious secondary pollution. Affect the benign development of enterprises and society

Polyphenylene particles are organic combustibles, and the prepared mortar generally can only meet the B1 fire protection standard. In the event of a fire, toxic smoke will be produced, which is seriously harmful

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