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self-curing concrete

A concrete and self-curing technology, applied in the field of concrete, can solve the problems of insufficient water evaporation inhibition, influence hydration, low water blocking ability, etc., and achieve the effects of improving water retention effect, improving impermeability and improving strength

Active Publication Date: 2022-05-20
东莞市冠峰混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the film formed by long-chain alcohols often has the problem of low strength, and the film formed by long-chain alcohols has a low water blocking ability, which leads to insufficient inhibition of water evaporation and affects hydration.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Preparation method of self-curing concrete:

[0066] S1. 30g 2-dodecenoic acid, 0.1g peroxybenzoyl, 3g ethyl laurate, 3g octadecaneth and 600g of water were added to the first reactor, stirred at 60 °C with a high-speed stirring disperser for 2h to obtain an inhibitory emulsion;

[0067] S2. Add 15000g of dolomite sand, 800g of fly ash and 300g of aluminum powder to the mixer for 30min pre-mixing, and then add 16000g of cement while stirring, continue to mix for 10min, gradually add 11000g of water in the mixing process, and then mix for 2min to get concrete;

[0068] S3. Take the inhibition emulsion and add it to the sprayer, spray the inhibition emulsion on the concrete surface, and the spraying amount is 0.2kg / m 2 , get self-curing concrete.

Embodiment 2～ Embodiment 4

[0070] Example 2 to Example 4 and the difference between Example 1 is that the distribution ratio of each group is different, the reaction temperature and the reaction time are different, as shown in Table 1.

[0071] Table 1

[0072]

[0073]

Embodiment 5

[0075] The difference between the present embodiment and Example 4 is only that the S1 step of the present embodiment, 10g of polyepoxysuccinic acid was added to the first reactor.

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Abstract

The invention discloses a self-curing concrete, comprising concrete and inhibiting emulsion, wherein the inhibiting emulsion contains the following raw materials in parts by weight: 3-4.6 parts of long-chain alkenoic acid, 0.01-0.03 part of crosslinking agent, 0.1-0.3 part of fatty acid ester, 0.2-0.3 parts of emulsifier, water; its preparation method is: S1. Stir long-chain alkenoic acid, cross-linking agent, fatty acid ester, emulsifier and water to obtain an inhibited emulsion, S2. Mix sand, mineral admixture and The expansion agent is pre-mixed, and then cement is added while stirring, and the stirring is continued, and water is gradually added during the stirring process, and then stirred for 2 minutes to obtain concrete. Curing concrete has the advantages of effectively improving the inhibition of concrete moisture evaporation and improving the curing effect of concrete.

Description

Technical field [0001] The present invention relates to the field of concrete, more particularly, it relates to a kind of self-curing concrete. Background [0002] With the continuous acceleration of the speed of urban construction, the scale of road construction and building construction is also expanding, which makes the demand for concrete increasing, the market development prospects of concrete are considerable; concrete is composed of cementitious materials, coarse aggregates, water and other admixtures in accordance with the appropriate proportion of artificial stone, concrete use is generally equipped with maintenance steps, concrete maintenance is artificially caused by certain humidity and temperature conditions, so that the newly poured concrete can be normal or accelerate its hardening and strength growth, otherwise, When the moisture in the concrete evaporates too quickly, the cement particles that have formed a gel cannot be fully hydrated, and it is easy to appear f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B22/04C04B24/42C04B40/04C04B41/63
CPCC04B28/04C04B22/04C04B24/42C04B40/04C04B41/63C04B41/009C04B41/4857C04B2201/50C04B14/28C04B22/002C04B18/08C04B18/146C04B41/4853C04B41/46C04B41/4543Y02W30/91
Inventor 蔡心映徐龙
Owner 东莞市冠峰混凝土有限公司