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HBSY-KL type temperature-inhibiting, anti-cracking, anti-corrosion and waterproof additive for concrete

A technology of concrete and additives, applied in the field of concrete admixtures, can solve the problems of not being able to improve the waterproof and anti-corrosion performance and mechanical strength of concrete, refine capillary gaps, and reduce the heat of hydration at the same time, so as to achieve good waterproof effect, simple feeding method, The effect of preventing erosion damage

Active Publication Date: 2021-01-08
HUBEI PROVINCIAL WATER RESOURCES & HYDROPOWER PLANNING SURVEY & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above-mentioned admixtures can improve the waterproof and anti-corrosion performance and mechanical strength of concrete at the same time, refine the capillary voids, reduce the heat of hydration, and reduce the generation of shrinkage cracks

Method used

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  • HBSY-KL type temperature-inhibiting, anti-cracking, anti-corrosion and waterproof additive for concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The HBSY-KL-001 type temperature-suppressing, anti-cracking, anti-corrosion, and waterproof additive for concrete provided in this embodiment includes the following raw materials in mass percentages: 2% of nano-calcium silicate hydrate crystal seeds, 3% of modified nano-silicon dioxide, polyethylene 2.5% diol, 1.5% citric acid, 0.5% modified polystyrene, 1.2% triisopropanolamine, 5% sodium metasilicate, 2% sodium hexametaphosphate, 0.7% boric acid ester coupling agent, remaining for water;

[0025]The preparation method of the nano-calcium silicate hydrate crystal seed is as follows: add uncalcined diatomite to the quicklime first, then add uncalcined diatomite, and the weight ratio of quicklime to non-calcined diatomite is 1:1 according to the respective active ingredient contents; Add water and stir to prepare a uniform solution; then boil the solution under normal pressure for 4 hours, add 0.5% aluminum sulfate with an amount of quicklime, and continue boiling for 1 ...

Embodiment 2

[0031] The HBSY-KL-001 type temperature-suppressing, anti-cracking, anti-corrosion, and waterproof additive for concrete provided in this example is basically the same as that of Example 1, except that the raw materials used include: 4% of nano-calcium silicate hydrate seed solution, Modified nano-silica 1%, polyethylene glycol 1.5%, sorbitol 0.5%, modified polystyrene 0.5%, triisopropanolamine 0.8%, sodium metasilicate 3%, sodium hexametaphosphate 5% , borate coupling agent 0.8%, the rest is water.

Embodiment 3

[0033] The HBSY-KL-001 type temperature-suppressing, anti-cracking, anti-corrosion, and waterproof additive for concrete provided in this example is basically the same as that of Example 1, except that the raw materials used include: 5% nano-calcium silicate hydrate seed crystals, modified Non-toxic nano silicon dioxide 5%, polyethylene glycol 1%, citric acid 0.5%, modified polystyrene 0.5%, triisopropanolamine 2%, sodium metasilicate 1%, sugar 2%, boric acid ester The coupling agent is 0.5%, and the rest is water.

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Abstract

The invention discloses an HBSY-KL type temperature-inhibiting, anti-cracking, anti-corrosion and waterproof additive for concrete. The HBSY-KL type temperature-inhibiting, anti-cracking, anti-corrosion and waterproof additive comprises the following raw materials in percentage by mass: 0.5-5% of nano-calcium silicate hydrate crystal seeds with a concentration of more than or equal to 0.05 mol / L,0.5-5% of modified nano-silicon dioxide, 1-5% of polyethylene glycol, 0.5-3% of citric acid or sorbitol, 0.3-0.8% of modified polystyrene, 0.5-2% of triisopropanolamine, 0.5-10% of sodium metasilicate, 1-6% of sodium hexametaphosphate or white sugar, 0.5-1% of a borate coupling agent, and the balance of water. By adopting the modified nano silicon dioxide and the modified polystyrene which are treated in a special modification mode, the compactness, the impermeability, the corrosion resistance and the waterproofness of the concrete can be effectively improved, hydration heat is inhibited, andthe early-stage strength and the later-stage strength of the concrete are improved.

Description

technical field [0001] The invention belongs to the field of concrete admixtures, in particular to a temperature-suppressing, anti-cracking, anti-corrosion, and waterproof additive for concrete. Background technique [0002] At present, in concrete engineering, with the development of mass concrete and high-performance concrete technology, higher requirements are put forward for concrete preparation technology and admixture technology. Many projects need to use a variety of admixtures to meet actual needs. However, there are too many types of admixtures, which are prone to adaptability problems and affect the quality of the project. For example, common water-reducing agents, waterproofing agents, and expansion agents cannot solve the problem of heat of hydration in large-volume concrete. Among them, structural self-cracking and waterproofing generally use expansion agents, which reduce cracking and water seepage by means of expansion compensation and shrinkage. question. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C04B20/02C04B28/02C04B103/61C04B103/67C04B111/00C04B111/20C04B111/26C04B111/27C04B111/34
CPCC04B40/0039C04B20/023C04B28/02C04B2201/50C04B2103/61C04B2103/67C04B2111/2015C04B2111/343C04B2111/20C04B2111/26C04B2111/00293C04B2111/27C04B14/043C04B14/062C04B24/32C04B24/06C04B24/2611C04B24/122C04B12/04C04B22/16C04B24/006C04B24/02C04B24/10C04B14/06C04B14/02
Inventor 姚晓敏年夫喜高峰方周邹佳佳杨晓明杨仕志张晋锋潘亚辉陈杰君汤升才
Owner HUBEI PROVINCIAL WATER RESOURCES & HYDROPOWER PLANNING SURVEY & DESIGN INST
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