Preparation method of compression-resistant self-repairing concrete

A concrete and self-repairing technology, which is applied in the field of building material preparation, can solve problems such as concrete erosion and damage, self-repairing ability needs to be improved, concrete structure damage, etc., and achieve good adaptability

Inactive Publication Date: 2019-01-18
佛山齐安建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is to provide a kind of defect that the concrete is vulnerable to erosion and damage by the external environment during use. Preparation method of compressive self-healing concrete

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0025]Add 20-25g of urea and 70-80mL of formaldehyde solution with a mass fraction of 35% into the conical flask, stir until the urea is completely dissolved, then use triethanolamine to adjust the pH of the reaction system in the conical flask to 8.5-9.5, and put the conical flask Put it into a water bath, heat up to 70-80°C, and keep it warm for 40-50 minutes to obtain a viscous transparent liquid. After cooling to room temperature, adjust the pH to 6.8-7.0 with 10% hydrochloric acid to obtain urea-formaldehyde pre- Polymer; mix fluorocarbon resin masterbatch and E-51 type epoxy resin masterbatch according to the mass ratio of 3:2 to obtain oil-soluble capsule core, add 100-120mL ten Sodium dialkylbenzenesulfonate solution, 40-45g oil-soluble capsule core, 0.5-1.0mL n-butanol, 20-25g carbon nanotubes, start the stirrer, stir at a speed of 500-550r / min, emulsify and disperse for 30- 35min to obtain an oil-in-water emulsion; add 60-70mL urea-formaldehyde prepolymer to 120-130m...

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Abstract

The invention discloses a preparation method of compression-resistant self-repairing concrete, belonging to the technical field of construction material preparation. The repairing packing prepared bythe invention is bacillus alcalophilus-carried epoxy-fluorocarbon composite resin micro-capsules; the adopted bacillus alcalophilus has a good adaptability for high alkaline environment in concrete; and moreover, the self-repairing packing prepared by the invention can be used for self-diagnosing and self-repairing concrete cracks, thereby reaching the purpose of crack self-repairing. Bacillus alcalophilus, the remediating inoculant, in the compression-resistant self-repairing concrete prepared by the invention is screened and cultured through alkaline environment culture media of secondary settling sludge diluent, calcium bicarbonate and sodium carbonate; the doped carbon nanotubes can enhance siphon action produced by fracture surfaces of cracks, so that concrete cracks can be basicallyrepaired fast, and then be strengthened and repaired by calcium bicarbonate in concrete that forms into calcium carbonate slowly, and moreover, capsule core, as fluid packing, is good in thixotropic property and can improve compression-resistant performance of concrete.

Description

technical field [0001] The invention discloses a method for preparing compression-resistant self-repairing concrete, which belongs to the technical field of building material preparation. Background technique [0002] Self-healing concrete imitates the regeneration and recovery mechanism of animal bone tissue structure after trauma, and adopts the method of combining repair adhesive and concrete material, which has the function of self-repair and regeneration for material damage, and restores or even improves the performance of materials. New composite materials. Self-healing concrete, strictly speaking, should be a smart concrete. Smart concrete is a kind of concrete with sensing and repairing properties, which is the primary stage of smart concrete and the advanced stage of the development of concrete materials. [0003] Self-healing is one of the important characteristics of living things. The core of self-repair is material supply and energy supply, and the process is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B111/34
CPCC04B28/02C04B2111/343C04B2201/50C04B18/08C04B24/2623C04B14/106C04B14/185C04B24/126C04B24/008C04B24/122C04B22/122C04B24/2682C04B24/281C04B24/16C04B24/02C04B14/026C04B18/0418C04B18/18C04B22/10C04B2103/0001
Inventor 战英权章红英王素香
Owner 佛山齐安建筑科技有限公司
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