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Concrete water-retention curing agent and preparation method thereof

A water curing and concrete technology, which is applied in the field of concrete water retention and curing agents, can solve the problems of lack of water required for the hydration reaction of the concrete surface, damage the hydration structure, and affect the surface strength. High, the effect of preventing water evaporation

Inactive Publication Date: 2013-09-04
CHENGDU JIAXIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spray too early, some components of curing agent are easily diluted by free water on the concrete surface, enter the concrete surface, destroy its hydration structure, cause surface looseness, and affect surface strength; spray too late, it is easy to cause hydration reaction of the concrete surface Lack of water demand, causing cracking

Method used

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  • Concrete water-retention curing agent and preparation method thereof

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Embodiment Construction

[0020] Below we will further illustrate the present invention in conjunction with specific embodiments.

[0021] The formula composition table of each embodiment of table 1.

[0022] components Example 1 Example 2 Example 3 Example 4 Example 5 Mixture% 7.50 8.20 9.55 10.80 13.50 rosin% 3.50 3.60 3.85 4.25 5.00 Surfactant% 6.50 7.50 7.60 8.70 10.00 pH adjuster% 0.50 0.70 1.00 1.25 1.5 water% 82 80 78 75 70

[0023] The preparation process is:

[0024] a. Weigh the mixture, rosin and surfactant according to the above formula, put them in a container, heat the temperature to 150°C~250°C, and then add the pH regulator;

[0025] b. After the PH value regulator is evenly added, stir at a constant temperature of 180°C for 10-30 minutes;

[0026] C. Add water at last, cool to room temperature and pack into a container to obtain the present invention for subsequent use.

[0027] Table 2 is the test data table o...

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Abstract

A concrete water-retention curing agent is made of, by weight, 6%-13.5% of mixture, 3%-5% of rosin, 6%-10% of surfactant, 0.5%-1.5% of PH modifier and the balance water, wherein the mixture is made of mixing paraffin, microcrystalline wax and liquid wax in the weight proportion of 1:1:1. Cost of the concrete water-retention curing agent is 30-50% lower than that of equally effective curing agent, a process developing method is simplified and feasible, and products are novel, nontoxic and odorless and meet the requirements on environment protection. Further, curing effect is improved evidently, water loss rate of the concrete is further reduced, and indexes of strength and effective water retention rate of the products reach first-grade level of JC901-2002 national building material specifications.

Description

technical field [0001] The invention relates to a concrete water retention and curing agent. Background technique [0002] Concrete curing is a very important link in concrete construction. In order to prevent moisture from being evaporated and lost in the capillary, conditions must be created during construction to fully hydrate the cement to ensure that the strength of the concrete continues to grow. If the concrete is maintained in a dry environment, the hydration of the cement will stop with the gradual evaporation of water, and cause concrete shrinkage cracks and structural looseness, which will seriously affect the strength and durability of the concrete. The traditional maintenance of concrete is covered with burlap and crop straw, and watered continuously to maintain moisture. In recent years, plastic film blankets have also been used for maintenance. However, the disadvantages of these two methods are that they consume a lot of water and the quality of maintenance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B40/04C04B41/48
Inventor 钱炳黄泰东王玉树
Owner CHENGDU JIAXIN TECH
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