Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Magnesium phosphate cement-based sulfate-resistant maritime work repairing and reinforcing material and preparation method thereof
The invention belongs to the field of building materials, relates to a maritime work repairing and reinforcing material, and in particular, relates to a magnesium phosphate cement-based sulfate-resistant maritime work repairing and reinforcing material and a preparation method thereof. The material comprises the following components in percentage by mass: 53 to 60 wt% of magnesium phosphate cement, 39 to 46 wt% of quartz sand, and 0.8 to 1.5 wt% of polypropylene fiber. The magnesium phosphate cement comprises the components in percentage by mass: 62 to 67 wt% of magnesium phosphate cement-based gelling powder, 18 to 22 wt% of monoammonium phosphate, 10 to 13 wt% of a composite set retarder, and 2 to 4 wt% of sodium silicate. The magnesium phosphate cement-based gelling agent powder comprises the components in percentage by weight: 80 to 83 wt% of over-burnt magnesia powder, 5 to 7 wt% of limestone powder, and 10 to 15 wt% of metakaolin. The composite set retarder is composed of borax, disodium hydrogen phosphate dodecahydrate and organic acid. The material provided by the invention has the characteristics of strong sulfate corrosion resistance, fast setting and hardening, strong constructability, high early strength, strong wear resistance, good cohesiveness and the like, and has strong cohesiveness with an old concrete structure matrix.
本发明属于建筑材料领域，涉及海工修补加固材料，尤其是一种基于磷酸镁水泥基抗硫酸盐海工修补加固材料及其制备方法。该材料含有的组分及质量百分比如下：磷酸镁水泥53～60wt%；石英砂39～46wt%；聚丙烯纤维0.8～1.5wt%；磷酸镁水泥含有的组分及质量百分比包括：磷酸镁水泥基胶凝粉料62～67wt%；磷酸一铵18～22wt%；复合缓凝剂10～13wt%；硅酸钠2～4wt%；所述磷酸镁水泥基胶凝剂粉料包含：过烧氧化镁粉80～83wt%；石灰石粉5～7wt%；偏高岭土10～15wt%；复合缓凝剂由硼砂、十二水合磷酸氢二钠、有机酸构成。本发明材料具有抗硫酸盐侵蚀性强、凝结硬化快、可施工性强、早期强度高、耐磨性强、粘结性好等特点，其与旧混凝土结构基体粘结性强。
Magnesium phosphate cement-based sulfate-resistant maritime work repairing and reinforcing material and preparation method thereof
The invention belongs to the field of building materials, relates to a maritime work repairing and reinforcing material, and in particular, relates to a magnesium phosphate cement-based sulfate-resistant maritime work repairing and reinforcing material and a preparation method thereof. The material comprises the following components in percentage by mass: 53 to 60 wt% of magnesium phosphate cement, 39 to 46 wt% of quartz sand, and 0.8 to 1.5 wt% of polypropylene fiber. The magnesium phosphate cement comprises the components in percentage by mass: 62 to 67 wt% of magnesium phosphate cement-based gelling powder, 18 to 22 wt% of monoammonium phosphate, 10 to 13 wt% of a composite set retarder, and 2 to 4 wt% of sodium silicate. The magnesium phosphate cement-based gelling agent powder comprises the components in percentage by weight: 80 to 83 wt% of over-burnt magnesia powder, 5 to 7 wt% of limestone powder, and 10 to 15 wt% of metakaolin. The composite set retarder is composed of borax, disodium hydrogen phosphate dodecahydrate and organic acid. The material provided by the invention has the characteristics of strong sulfate corrosion resistance, fast setting and hardening, strong constructability, high early strength, strong wear resistance, good cohesiveness and the like, and has strong cohesiveness with an old concrete structure matrix.
本发明属于建筑材料领域，涉及海工修补加固材料，尤其是一种基于磷酸镁水泥基抗硫酸盐海工修补加固材料及其制备方法。该材料含有的组分及质量百分比如下：磷酸镁水泥53～60wt%；石英砂39～46wt%；聚丙烯纤维0.8～1.5wt%；磷酸镁水泥含有的组分及质量百分比包括：磷酸镁水泥基胶凝粉料62～67wt%；磷酸一铵18～22wt%；复合缓凝剂10～13wt%；硅酸钠2～4wt%；所述磷酸镁水泥基胶凝剂粉料包含：过烧氧化镁粉80～83wt%；石灰石粉5～7wt%；偏高岭土10～15wt%；复合缓凝剂由硼砂、十二水合磷酸氢二钠、有机酸构成。本发明材料具有抗硫酸盐侵蚀性强、凝结硬化快、可施工性强、早期强度高、耐磨性强、粘结性好等特点，其与旧混凝土结构基体粘结性强。
Magnesium phosphate cement-based sulfate-resistant maritime work repairing and reinforcing material and preparation method thereof
基于磷酸镁水泥基抗硫酸盐海工修补加固材料及制备方法
ZHANG JIE (Autor:in) / LIU LIANGZHI (Autor:in) / ZHU PING (Autor:in) / CHENG LIN (Autor:in) / SONG XIAODI (Autor:in)
31.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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