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A platform for research: civil engineering, architecture and urbanism
Microorganism positioning self-repairing concrete material suitable for structural tensile region and preparation method thereof
The invention provides microorganism positioning self-repairing concrete suitable for a structural tensile region and a preparation method thereof, and belongs to the technical field of concrete preparation. The preparation method comprises the following steps: mixing a mineralized bacterial spore solution and an adsorption material, and coating a gridding cloth with the mixture to obtain a gridding cloth 1; mixing a yeast extract, ammonium sulfate, calcium acetate and urea in water, then adding an adsorption material to obtain a pasty mixed solution, and coating the pasty mixed solution on gridding cloth to obtain gridding cloth 2; tightly placing the gridding cloth 1 and the gridding cloth 2, fixing the gridding cloth 1 and the gridding cloth 2 at the edge of a concrete tension surface mold, mixing the cement, the water, the fine aggregate and the coarse aggregate, injecting into the mold, and molding and demolding. According to the concrete disclosed by the invention, the microorganism self-repairing agent is positioned on the tensile surface of the concrete by utilizing the gridding cloth, so that the dosage of the microorganism self-repairing agent can be saved, the manufacturing cost of the microorganism self-repairing concrete is reduced, and meanwhile, the crack resistance of the tensile area of the concrete is improved.
本发明提供了一种适用于结构受拉区的微生物定位自修复混凝土及其制备方法，属于混凝土制备技术领域。本发明的制备方法包含以下步骤：将矿化细菌芽孢溶液与吸附材料混合后涂布于网格布上，得到网格布1；将酵母提取物、硫酸铵、醋酸钙和尿素混合于水中，之后加入吸附材料得到糊状混合液，将糊状混合液涂布于网格布上，得到网格布2；将网格布1和网格布2紧贴放置，固定于混凝土受拉面模具边缘处，将水泥、水、细骨料和粗骨料混合后注入模具中，成型脱模后即可。本发明的混凝土利用网格布将微生物自修复剂定位于混凝土的受拉面，能够节约微生物自修复剂的用量，降低微生物自修复混凝土的制作成本，同时提高混凝土受拉区的抗裂性能。
Microorganism positioning self-repairing concrete material suitable for structural tensile region and preparation method thereof
The invention provides microorganism positioning self-repairing concrete suitable for a structural tensile region and a preparation method thereof, and belongs to the technical field of concrete preparation. The preparation method comprises the following steps: mixing a mineralized bacterial spore solution and an adsorption material, and coating a gridding cloth with the mixture to obtain a gridding cloth 1; mixing a yeast extract, ammonium sulfate, calcium acetate and urea in water, then adding an adsorption material to obtain a pasty mixed solution, and coating the pasty mixed solution on gridding cloth to obtain gridding cloth 2; tightly placing the gridding cloth 1 and the gridding cloth 2, fixing the gridding cloth 1 and the gridding cloth 2 at the edge of a concrete tension surface mold, mixing the cement, the water, the fine aggregate and the coarse aggregate, injecting into the mold, and molding and demolding. According to the concrete disclosed by the invention, the microorganism self-repairing agent is positioned on the tensile surface of the concrete by utilizing the gridding cloth, so that the dosage of the microorganism self-repairing agent can be saved, the manufacturing cost of the microorganism self-repairing concrete is reduced, and meanwhile, the crack resistance of the tensile area of the concrete is improved.
本发明提供了一种适用于结构受拉区的微生物定位自修复混凝土及其制备方法，属于混凝土制备技术领域。本发明的制备方法包含以下步骤：将矿化细菌芽孢溶液与吸附材料混合后涂布于网格布上，得到网格布1；将酵母提取物、硫酸铵、醋酸钙和尿素混合于水中，之后加入吸附材料得到糊状混合液，将糊状混合液涂布于网格布上，得到网格布2；将网格布1和网格布2紧贴放置，固定于混凝土受拉面模具边缘处，将水泥、水、细骨料和粗骨料混合后注入模具中，成型脱模后即可。本发明的混凝土利用网格布将微生物自修复剂定位于混凝土的受拉面，能够节约微生物自修复剂的用量，降低微生物自修复混凝土的制作成本，同时提高混凝土受拉区的抗裂性能。
Microorganism positioning self-repairing concrete material suitable for structural tensile region and preparation method thereof
一种适用于结构受拉区的微生物定位自修复混凝土材料及其制备方法
XU HONGYIN (author) / GUO JINJUN (author) / CHEN XUDONG (author) / ZHANG YADONG (author) / WANG KUN (author) / XU YAOQUN (author) / GUO WEIWEI (author)
2021-07-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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