A kind of expansion anti-crack waterproofing agent and using method thereof

A technology of anti-crack waterproofing agent and expansion agent, applied in the field of expansion anti-cracking waterproofing agent, can solve the problems of large slump loss of concrete, shortened setting time, poor dispersibility, etc., improve durability and speed up early reaction rate , make up for the negative effects

Active Publication Date: 2021-12-14
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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  • A kind of expansion anti-crack waterproofing agent and using method thereof
  • A kind of expansion anti-crack waterproofing agent and using method thereof
  • A kind of expansion anti-crack waterproofing agent and using method thereof

Examples

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Effect test

Embodiment 1

[0034] This embodiment provides an expanded anti-crack water repellent, including the following mass percentage of raw materials: 30% microscopy, 30% microbeads, 35% coal gangue, 3% of the modified basalt fiber, 2% of additives;

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

[0036] The method of preparing the anti-crack expansion agent is as follows: After mixing the expansion agent, the epoxy resin, the amino resin is mixed with mass ratio of 95: 4: 1, dissolved in anhydrous ethanol solution, stirred well for 10 min, placed in a vacuum of 60 ° C. The drying tank is vacuum dried to remove anhydrous ethanol to obtain a solid mixture, and the anti-crack expansion agent is obtained by the powder;

[0037] The expansion agent is composed of a calcium oxide expansionizer and a sulfoside expansion agent having a mass ratio of 9: 1, and calcium oxide or calcium hydro...

Embodiment 2

[0050] This embodiment provides an expanded anti-crack water repellent, compared to Example 1, in that the anti-crack expansion agent 5%, microbeads 40%, coal gangue 45%, modified basalt fiber 8%, unpack 2%. The test method was tested in Example 1, and the test results were shown in Table 2, and Table 3 was shown.

Embodiment 3

[0052] This embodiment provides an expanded anti-crack water repellent, compared to Example 1, the anti-crack expansion agent 20%, microbeads 38%, coal gangue 40%, modified basalt fiber 0.1%, unplexer 1.9%. The test method was tested in Example 1, and the test results were shown in Table 2, and Table 3 was shown.

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Abstract

The invention discloses an expansion anti-crack waterproof agent, which comprises the following raw materials in mass percentage: 5-30% of anti-crack expansion agent, 20-40% of microbeads, 25-45% of coal gangue, 0.1-8% of modified basalt fiber, Admixture 1‑5%. In the present invention, the anti-crack expansion agent and the modified basalt fiber can play a superimposed and compensatory shrinkage effect in the concrete, and have double anti-crack and waterproof functions; the modified basalt fiber makes it better combined with the concrete, without affecting the concrete On the basis of construction performance, the structural density of concrete is increased.

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 Patents(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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