A kind of frost-resistant concrete and preparation method thereof

A technology of concrete and antifreeze, applied in the field of concrete, can solve the problems of concrete cracking, concrete compressive strength decrease, affecting concrete durable frost resistance, etc., to achieve the effect of promoting solidification, improving workability, and improving frost resistance performance

Active Publication Date: 2022-04-19
佛山市南海区恒锵混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among them, the calcium formate in the above-mentioned prior art tends to cause cracks in the concrete, so that the compressive strength of the concrete decreases rapidly with the repeated freeze-thaw tests, thereby affecting the durable frost resistance of the concrete

Method used

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  • A kind of frost-resistant concrete and preparation method thereof
  • A kind of frost-resistant concrete and preparation method thereof
  • A kind of frost-resistant concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-12

[0063] The components and proportions of the antifreeze concrete in Examples 1-12 are shown in Table 2.

[0064] Component and proportioning (unit / kg) of antifreeze concrete in table 2 embodiment 1-12

[0065]

Embodiment 1

[0068] The ratio of propylene glycol, glycerol, KH550 and sodium dodecylbenzenesulfonate in the antifreeze agent in Example 1 is 2.5:1:0.2:0.3;

Embodiment 6

[0069] The ratio of propylene glycol, glycerol, KH550 and sodium dodecylbenzenesulfonate in the antifreeze agent in Example 6 is 2:1.5:0.1:0.4;

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Abstract

The invention relates to the field of concrete, and specifically discloses a frost-resistant concrete and a preparation method thereof. Freeze-resistant concrete includes cement, fly ash, fine aggregate, coarse aggregate, water reducer, antifreeze agent and water; the antifreeze agent includes a weight ratio of (2.0‑2.5): (1.0‑1.5): ( 0.1‑0.2): (0.3‑0.4) propylene glycol, glycerin, silane coupling agent and alkylbenzene sulfonate; the preparation method is: add water reducing agent and antifreeze agent to water for pre-mixing to obtain agent solution; uniformly mix fine aggregate and coarse aggregate to obtain an aggregate mixture; uniformly mix cement and fly ash to obtain a rubber mixture; uniformly mix the rubber mixture and aggregate mixture to obtain a premix; add to the premix admixture solution, and stir evenly to obtain frost-resistant concrete. The antifreeze concrete of the invention can be used for building concrete in low temperature regions, and has the advantage of good antifreeze performance.

Description

technical field [0001] The invention relates to the field of concrete, more specifically, it relates to a frost-resistant concrete and a preparation method thereof. Background technique [0002] Concrete refers to the artificial stone obtained by uniformly mixing, molding and hardening with cement as the main gel material, mixed with water, sand, stones, chemical additives and admixtures. With the expansion of urban areas, a large number of buildings need to be constructed, and concrete, as the most widely used building material in modern times, requires a large amount of preparation and use, and it is necessary to ensure that the concrete can be constructed normally, and it is also required that the concrete has sufficient strength after forming. strength. [0003] However, when concrete is constructed in a low-temperature environment, the free water in the concrete will cool down and transform from liquid to solid. On the one hand, solid free water cannot participate in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/20
CPCC04B28/04C04B2111/20C04B14/02C04B14/06C04B2103/302C04B24/02C04B24/42C04B24/20C04B18/08C04B24/18
Inventor 蒲锦伦符卓亨张志伟
Owner 佛山市南海区恒锵混凝土有限公司
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