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Expansion crack water-proofing agent and using method thereof

A technology of anti-cracking waterproofing agent and expansion agent, which is applied in the field of expansion anti-cracking waterproofing agent, which can solve the problems of large slump loss, shortened setting time, and poor dispersion of concrete, so as to improve compactness and reduce water migration , The effect of improving durability

Active Publication Date: 2018-12-28
海南胜凯建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most projects use expansion agents or fibers to increase the compactness of concrete, to compensate for shrinkage, and to prevent concrete cracking, but traditional expansion agents or fibers are used in terms of dosage, use conditions, dispersion performance and curing conditions. Large impact, easy to cause large loss of concrete slump, shortened setting time, reduced strength, poor dispersion and other problems

Method used

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  • Expansion crack water-proofing agent and using method thereof
  • Expansion crack water-proofing agent and using method thereof
  • Expansion crack water-proofing agent and using method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] This embodiment provides an expansion anti-crack waterproofing agent, which contains the following raw materials in mass percentage: 30% of anti-crack expansion agent, 30% of microbeads, 35% of coal gangue, 3% of modified basalt fiber, and 2% of admixture;

[0035] When the mass ratio of anti-crack expansion agent and modified basalt fiber is 10:1, the anti-crack and waterproof performance of concrete is optimal.

[0036] The preparation method of the anti-crack expansion agent is as follows: after mixing the expansion agent, epoxy resin and amino resin according to the mass ratio of 95:4:1, dissolve them in anhydrous ethanol solution, stir them evenly for 10 minutes, and place them in a vacuum at 60°C. Vacuum-dry in a drying oven to remove absolute ethanol to obtain a solid mixture, which is ground to obtain an anti-crack expansion agent;

[0037] The expansion agent is composed of a calcium oxide expansion agent and a calcium sulfoaluminate expansion agent with a mass...

Embodiment 2

[0050] This embodiment provides an expansion anti-crack waterproofing agent. Compared with Example 1, the difference is that the anti-crack expansion agent is 5%, microbeads are 40%, coal gangue is 45%, modified basalt fiber is 8%, and additives 2%. The test method in Example 1 is used to test, and the test results are shown in Table 2 and Table 3.

Embodiment 3

[0052] This embodiment provides an expansion anti-crack waterproofing agent. Compared with Example 1, the difference is that the anti-crack expansion agent is 20%, microbeads are 38%, coal gangue is 40%, modified basalt fiber is 0.1%, and additives 1.9%. The test method in Example 1 is used to test, and the test results are shown in Table 2 and Table 3.

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Abstract

The invention discloses an expansion crack water-proofing agent. The expansion crack water-proofing agent comprises the following raw materials in percentage by mass: 5-30% of an anti-crack swelling agent, 20-40% of a microsphere, 25-45% of gangue, 0.1-8% of a modified basalt fiber and 1-5% of an additive. The anti-crack swelling agent and the modified basalt fiber can play the roles of superposition, compensation and shrinkage in concrete, and have the functions of double crack resistance and waterproofing; the modified basalt fiber is better combined with the concrete, so that the structurecompactness of the concrete is increased without influencing the concrete construction performance.

Description

technical field [0001] The invention belongs to the field of expansion and anti-cracking waterproof building materials, and in particular relates to an expansion and anti-cracking waterproofing agent and its application method. Background technique [0002] With the increasing number of construction projects, the problem of concrete shrinkage and cracking has become increasingly prominent, which has seriously affected the durability, bearing capacity and waterproof performance of concrete. There are three main reasons for cracks in concrete structures: one is caused by external loads, and the existence of such cracks is the most common, mainly due to problems such as unreasonable structural design, insufficient safety factor, lack of consideration of the possibility of construction, and insufficient structural rigidity; This kind of crack is caused by the secondary stress of the structure. Due to the discrepancy between the actual working state of the concrete structure and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C03C13/06C03C12/00C04B28/02C04B103/65C04B111/28
CPCC03C12/00C03C13/06C04B28/02C04B40/0039C04B2103/65C04B2111/00293C04B2201/50C04B2111/28C04B14/22C04B18/12C04B14/46C04B2103/0068C04B24/281C04B24/307C04B22/085C04B22/147C04B22/064C04B14/06C04B14/308C04B14/303C04B14/304C04B22/06C04B18/08C04B14/14C04B2103/302
Inventor 周清松殷璐吴选李小举朱乾坤赵文鹏
Owner 海南胜凯建材有限公司
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