Waterproof phosphogypsum plastering mortar dry powder
A technology of plastering mortar and phosphogypsum, which is applied in the field of building materials, can solve problems such as limited production, achieve the effects of solving utilization, reducing costs, and promoting a virtuous circle
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example 1
[0018] A water-resistant phosphogypsum plastering mortar dry powder, its composition and mass content are: 290kg of phosphogypsum-based cementitious material, 680kg of sand, 5kg of waterproofing agent, 10kg of retarder, and 15kg of water-retaining agent. Among them, the phosphogypsum-based cementitious material is β hemihydrate gypsum prepared by phosphogypsum calcined at 170°C for 2 hours and aged for 6 days; the sand is ultra-fine sand with a fineness modulus of 1.0; the waterproofing agent is hydrogen-containing silane; the retarder It is sodium tripolyphosphate; the water retaining agent is methyl cellulose ether. When in use, add water directly in an appropriate proportion and stir evenly on site.
example 2
[0020] A water-resistant phosphogypsum plastering mortar dry powder, its composition and mass content are: 240kg of phosphogypsum-based cementitious material, 680kg of sand, 25kg of waterproofing agent, 5kg of retarder, and 50kg of water-retaining agent. Wherein the phosphogypsum-based gelling material is a mixture of β hemihydrate gypsum prepared by calcination of phosphogypsum at 180°C for 3 hours and aging for 5 days and type II anhydrite prepared by phosphogypsum at 350°C in a weight ratio of 4:1; The sand is ultra-fine sand with a fineness modulus of 1.5; the waterproofing agent is a mixture of hydrogen-containing silane and lime calcium powder in a weight ratio of 1:8; the retarder is sodium tripolyphosphate; and the water-retaining agent is bentonite. When in use, add water directly in an appropriate proportion and stir evenly on site.
example 3
[0022] A water-resistant phosphogypsum plastering mortar dry powder, its composition and mass content are: 200kg of phosphogypsum-based cementitious material, 750kg of sand, 20kg of waterproofing agent, 2kg of retarder, and 30kg of water-retaining agent. The phosphogypsum-based cementitious material is a mixture of β hemihydrate gypsum prepared by calcination of phosphogypsum at 190°C for 2 hours and aging for 5 days and type II anhydrite prepared by phosphogypsum at 360°C in a mass ratio of 2:1; The sand is ultra-fine sand with a fineness modulus of 1.3; the waterproofing agent is a mixture of hydrogen-containing silane and white cement in a weight ratio of 1:10; the retarder is sodium tripolyphosphate; the water-retaining agent is methyl cellulose ether and bentonite A mixture of 1:20 by weight. When in use, add water directly in an appropriate proportion and stir evenly on site.
[0023] Using phosphogypsum-based cementitious materials and ultra-fine sand as raw materials,...
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