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Anti-interference anticracking agent for concrete and preparation method thereof

A technology of concrete and anti-cracking agent, which is applied in the field of improving the anti-disturbance and anti-cracking performance of concrete, and can solve problems such as large social impact, closed traffic is not allowed, and increased vehicle detour distance

Inactive Publication Date: 2010-08-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large traffic volume, closed traffic will increase the detour distance of vehicles, and the social impact is relatively large, and sometimes closed traffic is not allowed at all

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] A concrete that meets anti-disturbance and anti-crack standards, and the design strength level is C40.

[0017] Prepare anti-jamming and anti-cracking agent liquid components, coagulation regulator (mainly affect the concrete setting time, the dosage can be changed according to the specific construction requirements, increasing the dosage can reduce the time difference between the initial setting and final setting of concrete, the dosage range is 4% to 8 %, the best dosage is 6%) effective content (6%) and triethanolamine (mainly affect the early strength of concrete, the dosage can be changed according to the specific construction requirements, increasing the dosage within the range of 0.01% to 0.06% can improve For the early strength of concrete, the optimum dosage is 0.02%) and the effective content (0.02%) is mixed according to the mass ratio (300:1). The liquid component of the anti-disturbance and anti-cracking agent is prepared by high-speed stirring to make it u...

example 2

[0024] Prepare anti-jamming and anti-cracking agent liquid components, coagulation regulator (mainly affect the concrete setting time, the dosage can be changed according to the specific construction requirements, increasing the dosage can reduce the time difference between the initial setting and final setting of concrete, the dosage range is 4% to 8 %, the best dosage is 6%) effective content (3%)) and triethanolamine (mainly affects the early strength of concrete, the dosage can be changed according to the specific construction requirements, and the dosage can be increased within the range of 0.01% to 0.06%) To improve the early strength of concrete, the optimal dosage is 0.02%) and the effective content (0.02%) is mixed according to the mass ratio (150:1). The liquid component of the anti-disturbance and anti-cracking agent is prepared by high-speed stirring to make it uniformly mixed.

[0025] Preparation of anti-jamming and anti-cracking agent solid components, expansion...

example 3

[0031]Prepare anti-jamming and anti-cracking agent liquid components, coagulation regulator (mainly affect the concrete setting time, the dosage can be changed according to the specific construction requirements, increasing the dosage can reduce the time difference between the initial setting and final setting of concrete, the dosage range is 4% to 8 %, the best dosage is 6%) effective content (8%) and triethanolamine (mainly affect the early strength of concrete, the dosage can be changed according to the specific construction requirements, increasing the dosage within the range of 0.01% to 0.06% can improve For the early strength of concrete, the optimal dosage is 0.02%) and the effective content (0.02%) is mixed according to the mass ratio (400:1). The liquid component of the anti-disturbance and anti-cracking agent is prepared by high-speed stirring to make it uniformly mixed.

[0032] Preparation of anti-jamming and anti-cracking agent solid components, expansion function...

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PUM

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Abstract

The invention relates to an anti-interference anticracking agent for concrete, which comprises a setting regulator for shortening the interfered period of the concrete, a hydramine admixture for enhancing the early strength of the concrete, an expansion function admixture for enhancing the self-healing rate of the interfered concrete, a powdery early-strength admixture for enhancing the early strength of the concrete, and a fiber function admixture for enhancing the anticracking property of the concrete. The anti-interference anticracking agent is composed of a liquid component and a solid component, wherein the liquid component comprises the setting regulator and the hydramine admixture, and the solid component comprises the expansion function admixture, the fiber function admixture and the powdery early-strength admixture. The preparation method comprises the following steps: preparing the liquid component of the anti-interference anticracking agent, preparing the solid component of the anti-interference anticracking agent, and evenly mixing the liquid component and the solid component in proportion for use. The invention can be used for improving the anti-interference anticracking property of the concrete, so that the concrete can perform more functions in bridge repairing. The anti-interference anticracking agent is an admixture which has the advantages of controllable composition and diversified products, and is suitable for mass production.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a concrete admixture, concrete anti-disturbance technology, and a method for improving the anti-disturbance and anti-crack performance of concrete. Background technique [0002] The western region of our country has a vast territory, a huge number of bridges, and a large number of building materials are concrete. As the country continues to deepen the development of the west, the traffic flow in the west is also increasing. Because many of these bridges were built during the 1960s and 1970s, they can no longer meet the current traffic requirements, so they need to be reinforced and reconstructed. How to transform it under the condition of uninterrupted traffic has become a topic now. [0003] Currently commonly used reinforced concrete are shotcrete, self-compacting concrete and rapid hardening concrete. Shotcrete is a kind of concrete that is sprayed onto the sprayed surface at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12
Inventor 张永娟张悦然张雄
Owner TONGJI UNIV
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