Preparation method of phosphorus building gypsum base light self-leveling mortar

Abstract

The invention discloses phosphorus building gypsum base light self-leveling mortar. The phosphorus building gypsum base light self-leveling mortar is characterized by being prepared from the followingcomponents in percentage by mass: 70 to 90 percent of phosphorus building gypsum, 0 to 20 percent of dried sand, 0 to 20 percent of cement, 0 to 5 percent of coal ash, 5 to 20 percent of lightweightaggregate, 0 to 15 percent of active excitant, 0 to 3 percent of water repellent, 0.1 to 1 percent of high-performance plasticizer, 0 to 0.2 percent of sedimentation-resistant assistant, 0 to 0.2 percent of flocculation assistant, 0.01 to 0.4 percent of calcium sulphate retarder, 0 to 3 percent of high-molecular polymer and 0.05 to 0.3 percent of high-performance de-foaming agent. The prepared light self-leveling mortar is less than or equal to 1,000Kg / m<3> in unit weight, is larger than or equal to 10MPa in pressure resistance. The production process is easy, is low in energy consumption, andis high production performance; the light self-leveling mortar is particularly suitable for indoor thick layer leveling projects, has certain insulation, heat insulation and sound insulation functions, contributes to lowering environmental pollution, is simple in production process, is low in energy consumption and has high performance; compared with other self-leveling mortar products, the phosphorus building gypsum base light self-leveling mortar has higher market competitivity and high practicability.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of waste resources and building materials, and in particular relates to a preparation method of phosphorus building gypsum-based lightweight self-leveling mortar. Background technique [0002] my country is the most populous country in the world, and agricultural production is very important. With the development of agricultural production, the demand for chemical fertilizers is increasing. Phosphorus fertilizer can increase crop yield, improve crop quality, accelerate the tillering of cereal crops and promote grain fullness; promote the flowering and fruiting of cotton, melons, solanaceous vegetables and fruit trees, and increase the rate of fruiting; increase the sugar content of beet, sugarcane, watermelon, etc.; oil content of the seeds. [0003] The demand for phosphate fertilizers is increasing year by year, reaching 8.5 million tons in 2014. Phosphogypsum is the industrial waste s...

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Problems solved by technology

[0004] In recent years, under the vigorous promotion of national energy conservation and emission reduction policies, my country's building energy-saving technology has developed rapidly. Cement, as a high-energy-consuming, high-resource-consuming industry, has been under pressure from policies and environmental protection, and its output has gradually decreased. Gypsum, as a low-energy-consuming industry, has received policy support. , the existing floor generally adopts the method of cement mortar leveling, which requires a large amount of materials and high labor costs; self-leveling mortar can solve the problem of labor costs, but the cost of traditional self-leveling mortar materials is high, although it can be leveled in thin layers (within 5mm), but In actual use, it usually needs 1~2cm, resulting in extremely high cost and lack of market competitiveness

[0005] The use of industrial waste phosphorus building gypsum to prepare self-leveling mortar can greatly reduce the product price, but it cannot compete with traditional cement mortar in terms of comprehensive cost. The prepared phosphorus building gypsum-based lightweight self-leveling mortar can solve the cost problem. And the thermal insulation performance is better, which provides a new way for the comprehensive utilization of phosphogypsum

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