Microcapsule for self-repair concrete and preparation method of self-repair concrete

A technology for microcapsules and concrete, applied in the directions of microcapsule preparation and microsphere preparation, etc., can solve the problems of inability to track the development of cracks in time, poor intelligence, etc., and achieve the effect of easy implementation and simple preparation process operation.
CN104944833AInactive Publication Date: 2015-09-30SHENZHEN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN UNIV
Publication Date
2015-09-30
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a microcapsule for self-repair concrete and a preparation method of the self-repair concrete. The microcapsule comprises a capsule core and a capsule wall, wherein the capsule core is composed of a repair agent, microcrystalline cellulose and Tween 80; and the capsule wall material is a crack-stress-sensitive high-polymer organic material. The preparation method of the self-repair concrete comprises the following steps: weighing proper amounts of cement, sand, water and the microcapsule, wherein every cubic meter of concrete contains 0.05-0.08 cubic meter of microcapsule; stirring the cement, sand and microcapsule until the components are dispersed uniformly; and pouring the water into the mixture of the cement, sand and microcapsule, and stirring uniformly. The microcapsule can be doped into the concrete to form the microcapsule concrete self-repair system, thereby implementing self-repair capability of the concrete crack; and the microcapsule concrete self-repair system has the characteristic of intelligent control.
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Description

[technical field]

[0001] The invention relates to concrete crack self-healing, in particular to a microcapsule for self-healing concrete and a preparation method of self-healing concrete. [Background technique]

[0002] Concrete is the most widely used building and structural material today. Due to the composition of the structure itself and the characteristics of its bearing capacity, there are often some original micro-cracks inside the concrete. During its service, as the load changes and time goes by, the internal cracks will expand into cracks, and even extend to The surface leads to cracking of the concrete material. After the formation of through cracks, the concrete is easily eroded and damaged by the external environment and various harmful factors, such as steel bar corrosion, carbonization, chloride ion erosion and sulfate attack, etc., which eventually lead to cracking and destruction of the concrete material. , does not meet the requirements of use, seriously a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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