A kind of antifreeze-thaw concrete interface agent and preparation method

A concrete and anti-freeze-thaw technology, applied in the field of concrete interface agent, can solve problems such as poor freeze-thaw resistance of interface agent, achieve the effect of large cross-linking bond energy, avoid damage stress, and reduce water saturation

Active Publication Date: 2021-03-23
CHONGQING CONSTR ENG NEW BUILDING MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a freeze-thaw resistant concrete interface agent and a preparation method for solving the problems of poor freeze-thaw resistance of the interface agent in the prior art.

Method used

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  • A kind of antifreeze-thaw concrete interface agent and preparation method

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preparation example Construction

[0061] The preparation method of antifreeze-thaw concrete interface agent of the present invention is as follows:

[0062] 1. Raw materials

[0063] Cement, fly ash, nano silica, kaolin, quartz sand, diethylenetriamine, thiourea, trimethylolpropane triacrylate, hydroxypropyl methacrylate, thiopropylmethyldimethoxysilane , Epoxy Resin E-44, Glycerin, Sodium Dodecyl Sulfonate, Alkylphenol Polyoxyethylene Ether, Sodium Sulfate Decahydrate, Dibenzoyl Peroxide, Isobutyl Trimethoxysilane, Butyl Glycidol Ether, hydroxypropyl methylcellulose ether, amide-modified hydrogenated castor oil, polyamide wax, dispersant SK-5040, calcium lignosulfonate, defoamer DF849, paraffin wax.

[0064] 2. Description of main materials

[0065] (1) Cement: Ordinary Portland cement 42.5 grade.

[0066] (2) Fly ash: Class II ash.

[0067] (3) Diethylenetriamine: analytically pure, purity ≥ 98%, purchased from Tianjin Damao Chemical Reagent Factory.

[0068] (4) Thiourea: analytically pure, purity ≥ 98...

Embodiment 1

[0091] The preparation steps of the antifreeze-thaw concrete interface agent of the present embodiment are as follows:

[0092]1) Preparation of emulsifier A: 0.5 g of sodium dodecylsulfonate and 1.0 g of alkylphenol polyoxyethylene ether were mixed and added to deionized water to obtain emulsifier A.

[0093] 2) Preparation of initiator B: 0.5 g of sodium sulfate decahydrate and 0.4 g of dibenzoyl peroxide were weighed and dissolved in 100 g of deionized water to obtain initiator B.

[0094] 3) Preparation of mixed monomer C: Quantitatively weigh 20g of diethylenetriamine, 15g of thiourea, 8g of thiopropylmethyldimethoxysilane, 10g of trimethylolpropane triacrylate, and 10g of hydroxypropyl methacrylate Ester, 5g of epoxy resin, 3g of glycerin, 0.6g of isobutyltrimethoxysilane, and 0.6g of butyl glycidyl ether were mixed uniformly to obtain mixed monomer C.

[0095] 4) Preparation of pre-emulsion D: Add mixed monomer C and 1 / 2 volume of emulsifier A into a four-neck flask, s...

Embodiment 2

[0101] The preparation steps of the antifreeze-thaw concrete interface agent of the present embodiment are as follows:

[0102] 1) Preparation of emulsifier A: 0.8 g of sodium dodecylsulfonate and 1.6 g of alkylphenol polyoxyethylene ether were mixed and added to deionized water to obtain emulsifier A.

[0103] 2) Preparation of initiator B: 0.8 g of sodium sulfate decahydrate and 0.2 g of dibenzoyl peroxide were dissolved in 110 g of deionized water to obtain initiator B.

[0104] 3) Preparation of mixed monomer C: Weigh quantitatively 18g of diethylenetriamine, 16g of thiourea, 9g of thiopropylmethyldimethoxysilane, 9g of trimethylolpropane triacrylate, 6g of methacrylic acid hydroxy Propyl ester, 8g of epoxy resin, 4g of glycerin, 0.5g of isobutyltrimethoxysilane, and 0.8g of butyl glycidyl ether were uniformly mixed to obtain mixed monomer C.

[0105] 4) Preparation of pre-emulsion D: Add mixed monomer C and 1 / 2 volume of emulsifier A into a four-neck flask, stir at a spe...

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Abstract

The invention provides an anti-freeze thawing concrete interface agent and a preparation method. The interface agent is prepared from 150-350 parts of a cementing material, 40-100 parts of admixture,150-300 parts of fine aggregates, 0.1-1 part of a thickening agent, 10-15 parts of a compound regulator and 30-60 parts of water. By virtue of synergistic effects of properties among paraffin, an airentraining agent and a modified emulsion polymer, the freeze thawing resistance of the concrete interface agent can be greatly enhanced; the concrete interface agent provided by the invention also hasgood characteristics of low-temperature flexibility, low viscosity, high interface bonding force, aging resistance, water resistance, alkali resistance and the like; and the concrete interface agentcan realize low-temperature coagulating and hardening processes and can be constructed at the temperature of 5 DEG C and lower.

Description

technical field [0001] The invention relates to the field of concrete interface agents, in particular to a freeze-thaw resistant concrete interface agent and a preparation method. Background technique [0002] Concrete interface agent is also called interface adhesive and interface agent. At present, the interface agents used in my country's projects mainly include cement paste, expanded cement paste, epoxy glue, polymer modified cement mortar, etc. Among them, polymer modified cement mortar is made of cement, aggregate, high molecular polymer It is a new type of bonding layer treatment material after polymer modification. After hydration reaction, it can form a high-strength hardened body with great adhesion to concrete and certain toughness. , is a surface treatment material applied to concrete surface repair and reinforcement or to increase functional materials on the concrete surface. It can increase the bonding force between old and new concrete and between concrete and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/08C04B14/06C04B14/062C04B14/106C04B24/121C04B24/126C04B24/06C04B24/045C04B24/281C04B24/026C04B24/16C04B24/32C04B24/08C04B24/383C04B24/42C04B24/36C04B24/287C04B24/18C04B2103/50C04B2103/408
Inventor 辛转红石从黎陈敬杨再富李城田楠
Owner CHONGQING CONSTR ENG NEW BUILDING MATERIALS
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