Cement-based capillary crystalline waterproof material based on nanosilicon-based material and preparation method and application thereof

A technology of penetrating crystallization and waterproof materials, which is applied in the field of building waterproof materials, and can solve problems such as difficult to quickly repair concrete cracks and pores

Active Publication Date: 2019-08-09
上海凯顿百森建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the composite admixture is added to the cement-based waterproof material, under the action of water, the active chemical substances in the waterproof material have strong permeability, which promotes the hydration reaction of unhydrated cement particles and generates a large amount of water. The needle-like crystals can fill and close the capillary channels, so that the cement concrete has excellent waterproof and anti-seepage functions. Although the active material in this invention has good permeability, it is difficult to quickly repair the cracks and pores of the concrete and improve the waterproof and anti-seepage performance.

Method used

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  • Cement-based capillary crystalline waterproof material based on nanosilicon-based material and preparation method and application thereof
  • Cement-based capillary crystalline waterproof material based on nanosilicon-based material and preparation method and application thereof
  • Cement-based capillary crystalline waterproof material based on nanosilicon-based material and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0027] A cement-based permeable crystalline waterproof material is composed of the following raw materials in proportion by weight:

[0028] Portland cement 45 parts;

[0029] 31.4 parts of quartz sand;

[0030] 4 parts citric acid;

[0031] 12 parts of sodium carbonate;

[0032] 3 parts instant sodium silicate;

[0033] 0.4 parts of nano silicon dioxide;

[0034] 0.5 part of surfactant;

[0035] 0.5 parts of tartaric acid;

[0036] 1 part of calcium ion compensator;

[0037] 2 parts of polycarboxylate superplasticizer;

[0038] 0.2 parts of cellulose ether;

[0039] Wherein, the quartz sand is obtained by compounding 40-70 mesh, 70-100 mesh and 100-140 mesh, and the compounding weight ratio is specifically 1:2:1; the surfactant is dodecyl ethoxy sulfo Betaine; hydroxyethyl methyl cellulose ether with a viscosity of cellulose ether of 200-1500mPa·S.

Embodiment 2

[0041] A cement-based permeable crystalline waterproof material is composed of the following raw materials in proportion by weight:

[0042] Portland cement 55 parts;

[0043] 27 parts of quartz sand;

[0044] 3 parts citric acid;

[0045] 7 parts of sodium carbonate;

[0046] 1 part instant sodium silicate;

[0047] 0.4 parts of nano silicon dioxide;

[0048] 1.1 parts of surfactant;

[0049] 1.5 parts of tartaric acid;

[0050] 1 part of calcium ion compensator;

[0051] 2 parts of polycarboxylate superplasticizer;

[0052] 1 part of cellulose ether;

[0053] Wherein, the quartz sand is obtained by compounding 40-70 mesh, 70-100 mesh and 100-140 mesh, and the compounding weight ratio is specifically 1:2:1; the surfactant is dodecyl sulfopropyl betaine ; The viscosity of cellulose ether is hydroxyethyl methyl cellulose ether of 200-1500mPa·S.

Embodiment 3

[0055] A cement-based permeable crystalline waterproof material is composed of the following raw materials in proportion by weight:

[0056] 60 parts of Portland cement;

[0057] 18.5 parts of quartz sand;

[0058] 4 parts citric acid;

[0059] 10 parts of sodium carbonate;

[0060] 3 parts instant sodium silicate;

[0061] 0.1 part of nano silicon dioxide;

[0062] 0.5 part of surfactant;

[0063] 0.5 parts of tartaric acid;

[0064] 2 parts of calcium ion compensator;

[0065] 1 part of polycarboxylate superplasticizer;

[0066] 0.4 part of cellulose ether;

[0067] Wherein, the quartz sand is obtained by compounding 40-70 mesh, 70-100 mesh and 100-140 mesh, and the compounding weight ratio is specifically 1:2:1; the surfactant is dodecyl ethoxy sulfo Betaine or dodecyl sulfopropyl betaine; hydroxyethyl methyl cellulose ether with a viscosity of cellulose ether of 200-1500mPa·S.

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Abstract

The invention relates to a cement-based capillary crystalline waterproof material based on a nanosilicon-based material and a preparation method and application thereof. The waterproof material is prepared from, by weight, 45-65 parts of cement, 14-32 parts of quartz sand, 5-10 parts of a retarder, 0.1-0.4 part of the nanosilicon-based material, 2-9 parts of a crystal precipitant, 0.5-5 parts of asurfactant, 0.5-2 parts of a complexing agent, 1-5 parts of a calcium ion compensation agent, 0.5-2 parts of a water reducing agent and 0.2-2 parts of cellulose ether. Compared with the prior art, the cement-based capillary crystalline waterproof material is suitable for repairing pores and cracks inside cement, when a cement-based material has the cracks of which the diameters are small than 0.4mm, insoluble sediment is generated in the cracks of the cement-based material in the presence of water to fill and seal the cracks of the cement-based material, and thus self-repairing of the cracksof the cement-based material is achieved.

Description

technical field [0001] The invention belongs to the technical field of building waterproof materials, and relates to a cement-based permeable crystalline waterproof material modified based on nano-silicon-based materials and its preparation and application. Background technique [0002] In recent years, my country's construction industry has developed rapidly, and the scale of construction has continued to increase, but more and more building leakage problems have occurred. Relevant surveys have shown that the problem of housing leakage is not optimistic, and most buildings have different degrees of leakage. leak. The order of building leakage rate is the top floor (95%), residential buildings (63.6%), and underground space (57.4%). According to the statistics of the Ministry of Construction, more than half of the complaints about project quality are about building leakage. There are many factors that affect the waterproof quality of buildings, involving many aspects such a...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/27
CPCC04B28/04C04B2111/00293C04B2111/27C04B2201/50C04B14/06C04B24/06C04B22/10C04B22/00C04B14/062C04B24/383C04B2103/302C04B24/16C04B22/064
Inventor 叶学平蒋正武沐磊
Owner 上海凯顿百森建筑工程有限公司
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