Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-carbon cementing material prepared from supercritical carbon dioxide and preparation method of low-carbon cementing material
The invention discloses a low-carbon cementing material prepared from supercritical carbon dioxide and a preparation method, and belongs to the technical field of building materials. The low-carbon cementing material is prepared by the following steps: dipping regenerated micro-powder in an activating solution, carbonizing the regenerated micro-powder in a supercritical carbon dioxide environment to obtain an auxiliary cementing material, and compounding the auxiliary cementing material with cement, thereby obtaining the low-carbon cementing material, the activating solution comprises a surfactant and a calcium ion complexing agent; the surfactant is one or more of phosphoric acid, soluble phosphate and soluble aluminum salt; the calcium ion complexing agent is one of ethylene diamine tetraacetic acid, nitrilotriacetic acid trisodium salt and triethanolamine. Waste concrete recycled micro powder is taken as an object, a reinforced product is obtained through supercritical carbon dioxide mineralization, cement clinker in a certain proportion is replaced, carbon dioxide is sealed and stored while efficient resource utilization of building solid waste is achieved, and a novel low-carbon cementing material is provided.
本发明公开了一种利用超临界二氧化碳制备的低碳胶凝材料及制备方法，属于建筑材料技术领域。所述低碳胶凝材料，由再生微粉经活化溶液浸渍处理后，再置于超临界二氧化碳环境中碳化，得到辅助性胶凝材料，辅助性胶凝材料与水泥复配，即制得低碳胶凝材料；所述活化溶液包括表面活性剂、钙离子络合剂；所述表面活性剂为磷酸、可溶性磷酸盐和可溶性铝盐的一种或多种；所述钙离子络合剂为乙二胺四乙酸、次氮基三乙酸三钠、三乙醇胺中的一种。以废弃混凝土再生微粉为对象，通过超临界二氧化碳矿化得到强化产物，取代一定比例的水泥熟料，在解决建筑固体废弃物高效资源化利用的同时，实现二氧化碳的封存，提供了一种新的低碳胶凝材料。
Low-carbon cementing material prepared from supercritical carbon dioxide and preparation method of low-carbon cementing material
The invention discloses a low-carbon cementing material prepared from supercritical carbon dioxide and a preparation method, and belongs to the technical field of building materials. The low-carbon cementing material is prepared by the following steps: dipping regenerated micro-powder in an activating solution, carbonizing the regenerated micro-powder in a supercritical carbon dioxide environment to obtain an auxiliary cementing material, and compounding the auxiliary cementing material with cement, thereby obtaining the low-carbon cementing material, the activating solution comprises a surfactant and a calcium ion complexing agent; the surfactant is one or more of phosphoric acid, soluble phosphate and soluble aluminum salt; the calcium ion complexing agent is one of ethylene diamine tetraacetic acid, nitrilotriacetic acid trisodium salt and triethanolamine. Waste concrete recycled micro powder is taken as an object, a reinforced product is obtained through supercritical carbon dioxide mineralization, cement clinker in a certain proportion is replaced, carbon dioxide is sealed and stored while efficient resource utilization of building solid waste is achieved, and a novel low-carbon cementing material is provided.
本发明公开了一种利用超临界二氧化碳制备的低碳胶凝材料及制备方法，属于建筑材料技术领域。所述低碳胶凝材料，由再生微粉经活化溶液浸渍处理后，再置于超临界二氧化碳环境中碳化，得到辅助性胶凝材料，辅助性胶凝材料与水泥复配，即制得低碳胶凝材料；所述活化溶液包括表面活性剂、钙离子络合剂；所述表面活性剂为磷酸、可溶性磷酸盐和可溶性铝盐的一种或多种；所述钙离子络合剂为乙二胺四乙酸、次氮基三乙酸三钠、三乙醇胺中的一种。以废弃混凝土再生微粉为对象，通过超临界二氧化碳矿化得到强化产物，取代一定比例的水泥熟料，在解决建筑固体废弃物高效资源化利用的同时，实现二氧化碳的封存，提供了一种新的低碳胶凝材料。
Low-carbon cementing material prepared from supercritical carbon dioxide and preparation method of low-carbon cementing material
一种利用超临界二氧化碳制备的低碳胶凝材料及制备方法
XIE WEIXIAO (Autor:in) / TANG JINHUI (Autor:in) / LIU JIAPING (Autor:in) / LI ZHEN (Autor:in) / YU CHENG (Autor:in) / XU ZHISONG (Autor:in)
08.11.2024
Patent
Elektronische Ressource
Chinesisch
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