Cement-based self-leveling dry powder mortar for high-cracking-resistance ground
A dry powder mortar and cement-based technology, which is applied in the field of building materials, can solve the problems of poor water resistance, high cost, and corrosion of iron products, and achieve the effect of cost reduction and high density
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[0038] Example 1: A cement-based self-leveling dry powder mortar for high crack resistance ground is composed of cement, fine sand, heavy calcium powder, lithium slag powder, expansion agent, setting agent, superplasticizer, defoamer, anti-cracking Fiber composition, the specific raw material composition ratio in parts by weight: 42.5R strength grade ordinary Portland cement 300 parts, fine sand 20-150 mesh aeolian sand 550 parts, heavy calcium powder 30 parts of which CaCO 3 Content ≥95%, fineness specification is specific surface area 300~400m 2 / kg, 90 parts of lithium slag powder, the fineness specification is specific surface area ≥300m 2 / kg, 20 parts of commercially available calcium sulfate (AEA) expansion agent, 1.5 parts of lithium carbonate as coagulant, 5 parts of casein as superplasticizer, and P803 powdered defoamer produced by German Mingling Chemical 2 parts, anti-cracking fiber is 0.5 parts of polyacrylonitrile fiber, fiber length≤9mm. Implementation performance...
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[0039] Example 2: A cement-based self-leveling dry powder mortar for high crack resistance ground is composed of cement, fine sand, heavy calcium powder, lithium slag powder, expansion agent, setting agent, superplasticizer, defoamer, anti-cracking Fiber composition, the specific raw material composition ratio is calculated in parts by weight: 42.5R strength grade ordinary Portland cement 300 parts, fine sand is 20-150 mesh aeolian sand 500 parts, heavy calcium powder 100 parts of which CaCO 3 Content ≥95%, fineness specification is specific surface area 300~400m 2 / kg, 60 parts of lithium slag powder, the fineness specification is specific surface area ≥ 300m 2 / kg, 30 parts of commercially available calcium sulfoaluminate (UEA) expansion agent, 7 parts of calcium formate as coagulant, 3 parts of polycarboxylate powder as superplasticizer, and P803 powder produced by German Mingling Chemical 0.5 part of antifoaming agent, 1 part of polypropylene fiber for anti-cracking fiber, fi...
Example Embodiment
[0041] Table 1 Performance test results of cement-based self-leveling dry powder mortar for high crack resistance ground obtained in the examples
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