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Composite sulphoaluminate cement-based self-leveling material and preparation method thereof

A composite sulphoaluminate and cement-based technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of high cost, cost bottleneck impact, high energy consumption, etc., and achieve low production cost , Improve compactness, low energy consumption

Inactive Publication Date: 2011-09-07
长沙归一新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water resistance and wear resistance of cement-based self-leveling materials are better than those of gypsum self-leveling materials, but because cement needs to be calcined at high temperature, the energy consumption is high, and the cost is also high. Therefore, the large-scale promotion and application of cement-based self-leveling materials is limited by cost. Impact

Method used

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  • Composite sulphoaluminate cement-based self-leveling material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The weight ratio of each component of the present embodiment:

[0022] Desulfurized gypsum 35%

[0023] Ultrafine Mineral Powder 21%

[0024] Sulphoaluminate cement 32%

[0025] Portland cement 10%

[0026] Polycarboxylate superplasticizer 0.75%

[0027] Coagulant Na 2 SO 4 1.0%

[0028] Water retaining agent MC 0.05%

[0029] Preparation: Weigh the raw materials of each component according to the above-mentioned predetermined mass percentage, and mix them uniformly to obtain the composite sulfoaluminate self-leveling material of the present invention. According to the water-cement ratio of 0.41 ingredients, after testing, the fluidity is 220mm, and the fluidity loss is 3mm after 30 minutes.

Embodiment 2

[0031] The weight ratio of each component of the present embodiment:

[0032] Desulfurized gypsum 38%

[0033] Ultrafine Mineral Powder 17%

[0034] Sulphoaluminate cement 35%

[0035] Portland cement 8%

[0036] Naphthalene superplasticizer 0.5%

[0037] Coagulant K 2 SO 4 1.2%

[0038] Water retaining agent MC 0.07%

[0039] Silicone defoamer XPJ820 0.03%

[0040] Preparation: Weigh the raw materials of each component according to the above-mentioned predetermined mass percentage, and mix them uniformly to obtain the composite sulphoaluminate self-leveling material of the present invention. According to the water-cement ratio of 0.42 ingredients, after testing, the fluidity is 225mm, and the fluidity loses 2mm after 30 minutes.

Embodiment 3

[0042] The weight ratio of each component of the present embodiment:

[0043] Phosphogypsum 50%

[0044] Ultrafine Mineral Powder 14%

[0045] Sulphoaluminate cement 29%

[0046] Portland cement 5.3%

[0047] Polycarboxylate superplasticizer 0.8%

[0048] Coagulant Al 2 (SO 4 ) 3 0.8%

[0049] Water retaining agent HPMC 0.05%

[0050] Silicone defoamer XPJ820 0.05%

[0051] Preparation: Weigh the raw materials of each component according to the above-mentioned predetermined mass percentage, and mix them uniformly to obtain the composite sulphoaluminate self-leveling material of the present invention. According to the water-cement ratio of 0.42 ingredients, after testing, the fluidity is 230mm, and the fluidity will lose 1mm after 30 minutes.

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Abstract

The invention provides a composite sulphoaluminate cement-based self-leveling material which comprises the following components by weight percent: 20-50% of dihydrate gypsum, 10-32% of active admixture, 20-50% of early strength agent, 2-10% of alkaline exciting agent, 0.6-1.2% of coagulant, 0.5-1.0% of water reducing agent, 0.02-0.1% of water-retaining agent and 0-0.1% of defoamer. The composite sulphoaluminate cement-based self-leveling material has the advantages of high early strength, good water tolerance, adjustable coagulation time, low energy consumption and low production cost, can beused as a leveling construction material for various grounds and is convenient for construction.

Description

technical field [0001] The invention relates to a self-leveling material for construction, in particular to a composite sulphoaluminate cement-based self-leveling material for construction. Background technique [0002] Traditional building self-leveling materials include gypsum self-leveling materials, cement-based self-leveling materials, etc. [0003] The gypsum self-leveling material is an air-hardening self-leveling material prepared by using α-hemihydrate gypsum as the main material and adding various related additives, such as retarders, water reducing agents, and water-retaining agents. Due to its poor water resistance and wear resistance, high cost and limited application, it tends to be gradually replaced by cement-based self-leveling materials. [0004] The cement-based self-leveling material is a self-leveling material prepared by using high-grade Portland cement as the main raw material and adding related additives such as early-strength agents, water-reducing ...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B22/14
CPCC04B28/14Y02W30/91C04B7/02C04B7/323C04B18/08C04B18/141C04B20/0076C04B22/064C04B2103/14C04B2103/302C04B2103/46C04B2103/50C04B14/322C04B22/142C04B22/148C04B22/149C04B24/383
Inventor 石宗利
Owner 长沙归一新材料科技股份有限公司
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