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A platform for research: civil engineering, architecture and urbanism
Preparation method and application of cement-based material additive
The invention discloses a preparation method and application of a cement-based material additive. The preparation method comprises the following steps: preparing a calcium chloride solution and a sodium bicarbonate solution with equal mass to prepare porous calcium carbonate microspheres; inoculating bacillus lysine into a culture medium, and adding a spore efficient transforming agent into a culture solution; putting the calcium carbonate microspheres into a lysine bacillus spore culture solution, and fully standing until the concentration of the spore culture solution tends to be stable so as to obtain calcium carbonate microspheres loaded with microbial spores; dissolving the calcium carbonate microspheres loaded with the microbial spores into a mixed solution of sodium alginate and barium silver, uniformly stirring, and coating the surface layers of the calcium carbonate microspheres through spray drying. Results show that the cement-based material additive prepared by the method is suitable for maritime work environments, can effectively fill and block cracks of cement-based materials, improves the durability of engineering and prolongs the service life of the engineering.
本发明公开了一种水泥基材料添加剂的制备方法及其应用，配制等物质量氯化钙溶液和碳酸氢钠溶液，制作多孔碳酸钙微球；将赖氨酸芽孢杆菌接种至培养基中，向培养液中加入芽孢高效转化剂；将碳酸钙微球放入赖氨酸芽孢杆菌芽孢培养液中，充分静置，直至芽孢培养液浓度趋于稳定，获得负载微生物芽孢的碳酸钙微球；将负载微生物芽孢的碳酸钙微球溶于海藻酸钠、钡银混合溶液中，搅拌均匀，通过喷雾干燥实现碳酸钙微球的表层包覆。结果表明，该方法制备的水泥基材料添加剂适用于海工环境，可有效填充、封堵水泥基材料的裂缝，提升工程耐久性和服役寿命。
Preparation method and application of cement-based material additive
The invention discloses a preparation method and application of a cement-based material additive. The preparation method comprises the following steps: preparing a calcium chloride solution and a sodium bicarbonate solution with equal mass to prepare porous calcium carbonate microspheres; inoculating bacillus lysine into a culture medium, and adding a spore efficient transforming agent into a culture solution; putting the calcium carbonate microspheres into a lysine bacillus spore culture solution, and fully standing until the concentration of the spore culture solution tends to be stable so as to obtain calcium carbonate microspheres loaded with microbial spores; dissolving the calcium carbonate microspheres loaded with the microbial spores into a mixed solution of sodium alginate and barium silver, uniformly stirring, and coating the surface layers of the calcium carbonate microspheres through spray drying. Results show that the cement-based material additive prepared by the method is suitable for maritime work environments, can effectively fill and block cracks of cement-based materials, improves the durability of engineering and prolongs the service life of the engineering.
本发明公开了一种水泥基材料添加剂的制备方法及其应用，配制等物质量氯化钙溶液和碳酸氢钠溶液，制作多孔碳酸钙微球；将赖氨酸芽孢杆菌接种至培养基中，向培养液中加入芽孢高效转化剂；将碳酸钙微球放入赖氨酸芽孢杆菌芽孢培养液中，充分静置，直至芽孢培养液浓度趋于稳定，获得负载微生物芽孢的碳酸钙微球；将负载微生物芽孢的碳酸钙微球溶于海藻酸钠、钡银混合溶液中，搅拌均匀，通过喷雾干燥实现碳酸钙微球的表层包覆。结果表明，该方法制备的水泥基材料添加剂适用于海工环境，可有效填充、封堵水泥基材料的裂缝，提升工程耐久性和服役寿命。
Preparation method and application of cement-based material additive
一种水泥基材料添加剂的制备方法及其应用
ZHAN QIWEI (author) / ZHANG SHUANGSHUANG (author) / FENG LEI (author) / LI TAO (author) / LIU RENJIE (author) / YOU JUNQI (author)
2020-09-29
Patent
Electronic Resource
Chinese
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