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High-efficiency concrete air entraining agent and preparation method thereof

A technology of concrete and air-entraining agent, which is applied in the field of building materials, can solve the problems of ineffective workability of freshly mixed concrete, unreasonable bubble structure, and unstable bubbles, so as to improve impermeability and frost resistance durability, and chemical action Increase, improve the effect of workability

Inactive Publication Date: 2014-06-04
新力建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the 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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: This embodiment is a basic embodiment of the high-efficiency concrete air-entraining agent of the present invention. The raw material components of the high-efficiency concrete air-entraining agent include: rosin 6-70, sodium hydroxide 0.7-7, sulfuric acid 0.3~3, phenol 3~30, lignin calcium carbonate superplasticizer 3~7, NNO superplasticizer is sodium methylene dinaphthalene sulfonate superplasticizer 0.7~3, sodium tripolyphosphate 0.2~0.7, Water 20-37.

Embodiment 2

[0031] Embodiment 2: It is a further embodiment on the basis of Embodiment 1. The sulfuric acid of the high-efficiency concrete air-entraining agent is sulfuric acid with a concentration greater than or equal to 98%.

Embodiment 3

[0032] Embodiment 3: It is a preferred embodiment. The high-efficiency concrete air-entraining agent has its raw material components in parts by weight: rosin 62, sodium hydroxide 3, concentration of 99% sulfuric acid 2, phenol 27 , Lignin calcium carbonate superplasticizer 3, NNO superplasticizer 2, sodium tripolyphosphate 0.3, water 30.

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PUM

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Abstract

The invention relates to a high-efficiency concrete air entraining agent and a preparation method thereof. The concrete air entraining agent comprises the following raw material components by weight portion: rosin, sodium hydroxide, sulfuric acid, phenol, a lignin calcium carbonate water reducing agent, an NNO (methylene dinaphthyl sodium sulfonate) high-efficiency water reducing agent, sodium tripolyphosphate and water. The preparation method of the concrete air entraining agent comprises the following steps of: preparing colloidal basic liquid, preparing water reducing liquid, combining finished products of the high-efficiency concrete air entraining agent and the like. The high-efficiency concrete air entraining agent and a preparation method thereof have the advantages that mortar synthetized by the high-efficiency concrete air entraining agent is used, so that the project quality can be ensured, the project cost is reduced, the material consumption is reduced, the construction operation is convenient, and the working efficiency is increased.

Description

technical field [0001] The invention relates to a high-efficiency concrete air-entraining agent and a preparation method thereof, belonging to the technical field of building materials. 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/34C04B24/20C04B103/30
Inventor 袁传中陈金顺梁志刚曹如德李银松
Owner 新力建设集团有限公司