Preparation method of microcapsule concrete based on microwave and freeze thawing maintenance

Abstract

The invention provides a preparation method of a microcapsule concrete based on microwave and freeze thawing maintenance. The preparation method comprises the following steps: adding epoxy resin microcapsules which are respectively coated with bacillus pasteurii, calcium lactate and urea into water, stirring the mixture until the microcapsules are uniformly dispersed to form a microcapsule solution; subjecting ferroferric oxide and iron oxide to dispersing, pressing, calcining and crushing to form an iron-containing auxiliary agent, adding concrete into water, stirring the mixture, adding silicon dioxide, natural river sand, short fibers, the iron-containing auxiliary agent and a water reducer into the mixture, stirring the mixture, adding the microcapsule solution, slowly stirring the mixture, and curing to form the concrete; subjecting the concrete to water spraying maintenance, microwave heating and then freeze treatment, and carrying out repeated treatment to obtain the microcapsule concrete based on microwave and freeze thawing maintenance. According to the method, the concrete is good in water-proofing property and compression resistance, and the self-healing repairing can be realized.

Description

technical field [0001] The invention belongs to the field of road pavement materials, in particular to a microcapsule concrete based on microwave and freeze-thaw curing and a preparation method thereof. Background technique [0002] Concrete is an important component of cement materials. It has the advantages of strong adaptability, simple operation, good strength, good stability, excellent durability, and low cost. It is widely used in construction, bridges, roads and other fields. However, during the long-term use of concrete, cracks and even fractures will inevitably occur under the long-term action of the external environment and pressure. Once the concrete is damaged, it will cause great safety hazards to people's lives and property. The durability of compression and deformation is very important. [0003] At present, there have been many studies on the durability and self-healing properties of concrete. Chinese patent CN 101289300B discloses a self-healing concrete u...

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Problems solved by technology

[0004] It can be seen from the above prior art that the durability of concrete can be improved by adding functional substances to concrete, after finishing, or repairing cracks, etc., but it is difficult to guarantee the comprehensive performance of the repaired concrete, and it is difficult to keep up with the performance of the repaired concrete. Compared with the initial performance, the durability performance is not improved much

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