Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-durability maritime work concrete doped with modified silica sol and preparation method of high-durability maritime work concrete
The invention belongs to the technical field of maritime work concrete production, and particularly relates to high-durability maritime work concrete doped with modified silica sol and a preparation method of the high-durability maritime work concrete. The method comprises the following steps: (1) respectively weighing a proper amount of a silane coupling agent and a proper amount of silica sol, putting the silane coupling agent and the silica sol into a cosolvent composed of a mixed solution of deionized water and ethanol, uniformly mixing, putting the mixture into a condensation reflux device, and collecting a reacted solution, so as to obtain modified silica sol; (2) adding silica sol into water, uniformly stirring to obtain modified silica sol, and uniformly mixing the modified silica sol with the remaining raw materials of cement, water, aggregate, mineral admixture and water reducing agent; and (3) molding the mixture obtained in the step (2) in a mold, and curing. The concrete is doped with the modified silica sol capable of solving the problems of non-uniform dispersion and easy agglomeration of nano-silica particles, the prepared concrete effectively slows down permeation of chloride ions and corrosion of the chloride ions to reinforcing steel bars, and the durability of the concrete is improved.
本发明属于海工混凝土生产技术领域，具体涉及一种掺加改性硅溶胶的高耐久性海工混凝土及其制备方法。该方法包括以下步骤:(1)分别称取适量的硅烷偶联剂和硅溶胶，放入去离子水和乙醇的混合溶液组成的助溶剂中，混合均匀后装入冷凝回流装置，收集反应后的溶液，即可得到改性硅溶胶；(2)硅溶胶加入到水中搅拌均匀，得到改性硅溶胶再与剩余原料水泥、水、骨料、矿物掺合料、减水剂混合均匀；(3)将步骤(2)中得到的混合物入模成型、养护。该混凝土掺加了能够解决纳米二氧化硅颗粒分散不均匀、易团聚问题的改性硅溶胶，所制备的混凝土有效的减缓氯离子的渗透及氯离子对钢筋的腐蚀，提高混凝土的耐久性。
High-durability maritime work concrete doped with modified silica sol and preparation method of high-durability maritime work concrete
The invention belongs to the technical field of maritime work concrete production, and particularly relates to high-durability maritime work concrete doped with modified silica sol and a preparation method of the high-durability maritime work concrete. The method comprises the following steps: (1) respectively weighing a proper amount of a silane coupling agent and a proper amount of silica sol, putting the silane coupling agent and the silica sol into a cosolvent composed of a mixed solution of deionized water and ethanol, uniformly mixing, putting the mixture into a condensation reflux device, and collecting a reacted solution, so as to obtain modified silica sol; (2) adding silica sol into water, uniformly stirring to obtain modified silica sol, and uniformly mixing the modified silica sol with the remaining raw materials of cement, water, aggregate, mineral admixture and water reducing agent; and (3) molding the mixture obtained in the step (2) in a mold, and curing. The concrete is doped with the modified silica sol capable of solving the problems of non-uniform dispersion and easy agglomeration of nano-silica particles, the prepared concrete effectively slows down permeation of chloride ions and corrosion of the chloride ions to reinforcing steel bars, and the durability of the concrete is improved.
本发明属于海工混凝土生产技术领域，具体涉及一种掺加改性硅溶胶的高耐久性海工混凝土及其制备方法。该方法包括以下步骤:(1)分别称取适量的硅烷偶联剂和硅溶胶，放入去离子水和乙醇的混合溶液组成的助溶剂中，混合均匀后装入冷凝回流装置，收集反应后的溶液，即可得到改性硅溶胶；(2)硅溶胶加入到水中搅拌均匀，得到改性硅溶胶再与剩余原料水泥、水、骨料、矿物掺合料、减水剂混合均匀；(3)将步骤(2)中得到的混合物入模成型、养护。该混凝土掺加了能够解决纳米二氧化硅颗粒分散不均匀、易团聚问题的改性硅溶胶，所制备的混凝土有效的减缓氯离子的渗透及氯离子对钢筋的腐蚀，提高混凝土的耐久性。
High-durability maritime work concrete doped with modified silica sol and preparation method of high-durability maritime work concrete
一种掺加改性硅溶胶的高耐久性海工混凝土及其制备方法
LU LINGCHAO (Autor:in) / XU JUN (Autor:in) / LUAN YUEZHENG (Autor:in) / NIE JIANGTING (Autor:in) / CHEN GUOBIN (Autor:in) / WANG SHUANG (Autor:in)
12.08.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2022
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