A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Composite concrete self-repairing material and application thereof, and preparation method of self-repairing concrete
The invention belongs to the technical field of concrete, and particularly relates to a composite concrete self-repairing material and application thereof, and a preparation method of self-repairing concrete. According to the invention, calcium and magnesium ions provided by a mineral admixture and carbonate provided by lightweight aggregate increase the concentration of calcium, magnesium ions and carbonate ions at concrete cracks, so generation of calcium carbonate, magnesium hydroxide and magnesium carbonate is facilitated; and water can be taken away and released under a high-humidity condition due to the swelling capacity of water-absorbent resin, and the water is used for supplementing water needed in the forming process of calcium carbonate, magnesium hydroxide and magnesium carbonate and accelerating generation of new C-S-H crystals, so finally, concrete crack closing is promoted, and self-healing efficiency is improved.
本发明属于混凝土技术领域，具体涉及一种复合混凝土自修复材料及其应用、自修复混凝土的制备方法。本发明中矿物外加剂所提供的钙、镁离子和轻骨料所提供的碳酸盐增加了混凝土裂缝处的钙、镁离子和碳酸根离子浓度，有利于碳酸钙、氢氧化镁和碳酸镁的生成，吸水树脂的溶胀能力可以将水分从高湿条件下带走并释放出来，用于补充碳酸钙、氢氧化镁和碳酸镁形成过程中需要的水，并加速生成新的C‑S‑H晶体，最终促进混凝土裂缝闭合，提高自愈合效率。
Composite concrete self-repairing material and application thereof, and preparation method of self-repairing concrete
The invention belongs to the technical field of concrete, and particularly relates to a composite concrete self-repairing material and application thereof, and a preparation method of self-repairing concrete. According to the invention, calcium and magnesium ions provided by a mineral admixture and carbonate provided by lightweight aggregate increase the concentration of calcium, magnesium ions and carbonate ions at concrete cracks, so generation of calcium carbonate, magnesium hydroxide and magnesium carbonate is facilitated; and water can be taken away and released under a high-humidity condition due to the swelling capacity of water-absorbent resin, and the water is used for supplementing water needed in the forming process of calcium carbonate, magnesium hydroxide and magnesium carbonate and accelerating generation of new C-S-H crystals, so finally, concrete crack closing is promoted, and self-healing efficiency is improved.
本发明属于混凝土技术领域，具体涉及一种复合混凝土自修复材料及其应用、自修复混凝土的制备方法。本发明中矿物外加剂所提供的钙、镁离子和轻骨料所提供的碳酸盐增加了混凝土裂缝处的钙、镁离子和碳酸根离子浓度，有利于碳酸钙、氢氧化镁和碳酸镁的生成，吸水树脂的溶胀能力可以将水分从高湿条件下带走并释放出来，用于补充碳酸钙、氢氧化镁和碳酸镁形成过程中需要的水，并加速生成新的C‑S‑H晶体，最终促进混凝土裂缝闭合，提高自愈合效率。
Composite concrete self-repairing material and application thereof, and preparation method of self-repairing concrete
一种复合混凝土自修复材料及其应用、自修复混凝土的制备方法
WANG XIANFENG (author) / CHEN SHAOCONG (author) / LI DAWANG (author) / LI LONGYUAN (author)
2022-01-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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