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Concrete air entraining agent

An air-entraining agent and concrete technology, applied in the field of concrete air-entraining agent, can solve the problems of ineffective fresh concrete workability, unreasonable air bubble structure, uneven distribution, etc., and achieve good antifreeze effect and excellent foam stabilization effect , evenly distributed effect

Active Publication Date: 2016-11-16
GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most existing air-entraining agents have deficiencies such as unreasonable bubble structure, uneven distribution, unstable bubbles, and improper size, etc., which cannot effectively improve the workability of fresh concrete and improve the durability of hardened concrete. The compounding property of the agent is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The concrete air-entraining agent is made of the following raw materials in parts by weight: 60 parts of rosin powder (particle diameter is 2 μm), 18 parts of sodium hydroxide (mass concentration is 30%), 16 parts of sulfuric acid (mass concentration is 20%), B 8 parts of diol, 13 parts of bisphenol A, 7 parts of pentaerythritol, and 130 parts of water.

[0022] The preparation method of the above-mentioned concrete air-entraining agent is as follows: mix all the raw materials, stir for 30 minutes, put them into a reaction kettle, raise the temperature to 85°C, and keep it warm for 50 minutes to obtain it.

Embodiment 2

[0024] Concrete air-entraining agent is made from the following raw materials by weight: 55 parts of rosin powder (particle diameter is 4 μm), 16 parts of sodium hydroxide (mass concentration is 32%), 14 parts of sulfuric acid (mass concentration is 25%), B 11 parts of diol, 11 parts of bisphenol A, 9 parts of pentaerythritol, and 120 parts of water.

[0025] The preparation method of the above-mentioned concrete air-entraining agent is as follows: mix all the raw materials, stir for 30 minutes, put them into a reaction kettle, raise the temperature to 85°C, and keep it warm for 50 minutes to obtain it.

Embodiment 3

[0027] The concrete air-entraining agent is made from the following raw materials in parts by weight: 50 parts of rosin powder (particle diameter is 6 μm), 14 parts of sodium hydroxide (mass concentration is 35%), 11 parts of sulfuric acid (mass concentration is 30%), B 13 parts of diol, 9 parts of bisphenol A, 11 parts of pentaerythritol, and 110 parts of water.

[0028] The preparation method of the above-mentioned concrete air-entraining agent is as follows: mix all the raw materials, stir for 30 minutes, put them into a reaction kettle, raise the temperature to 85°C, and keep it warm for 50 minutes to obtain it.

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Abstract

The invention belongs to the technical field of concrete admixture, and in particular relates to a concrete air entraining agent which is prepared from the following raw materials in parts by weight: 40-60 parts of rosin powder, 10-18 parts of sodium hydroxide, 6-16 parts of sulfuric acid, 8-18 parts of glycol, 5-13 parts of bisphenol A, 7-15 parts of pentaerythritol and 90-130 parts of water. When being used in concrete, the concrete air entraining agent is stable in bubble, appropriate in size, uniform in distribution, capable of increasing strength of concrete, and capable of improving peaceability of concrete.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, in particular to a concrete air-entraining agent. Background technique [0002] Concrete air-entraining agent can effectively improve the workability of concrete, reduce the bleeding performance, and greatly improve the anti-freeze and anti-seepage performance of concrete. Concrete roads and bridges with ice and salt are especially important. In addition, fly ash is often used as an active admixture in the configuration of these concretes to improve the workability of fresh concrete and reduce the tendency of large-volume concrete to shrink and crack. However, it has been found that some fly ash with a high loss on ignition often reduces the air-entraining effect of the air-entraining agent because it contains unburned carbon particles. [0003] In commercial concrete, the use of high-quality air-entraining agents can significantly improve the performance of plastic concrete and har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/34C04B103/30
CPCC04B40/0039C04B2103/304C04B24/34C04B22/062C04B22/141C04B24/02
Inventor 黄煌陈威王恒尹丹欧鹏阮长泰谢体云
Owner GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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