Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-freezing concrete suitable for high-cold and high-altitude areas
The invention discloses anti-freezing concrete suitable for high-cold and high-altitude regions. The anti-freezing concrete is prepared by mixing 480-490 parts by weight of cement, 720-730 parts by weight of fine aggregate, 1050-1100 parts by weight of coarse aggregate, 4.8-4.9 parts by weight of an additive and 156.8-163.2 parts by weight of water, wherein the additive comprises an air entrainingagent and a water reducing agent, and the weight of the air entraining agent is 0.1-0.3% of that of the water reducing agent; and the water-binder ratio of the concrete is 0.32 to 0.34. By reducing the water-binder ratio, the strength of the concrete reaches the standard; by adding the water reducing agent, the fluidity of the concrete is improved, the slump of the concrete in a low-pressure dryenvironment is increased, and the working performance of the concrete is guaranteed; by adding the air entraining agent, the microstructure of the concrete is improved, the anti-freezing durability ofthe concrete in a low-temperature and large-temperature-difference environment of a high-cold and high-altitude area is guaranteed, and the service life of the concrete is prolonged.
本发明公开了一种适用于高寒高海拔地区的抗冻混凝土，由480～490重量份的水泥、720～730重量份的细骨料、1050～1100重量份的粗骨料、4.8～4.9重量份的外加剂以及156.8～163.2重量份的水混合而成；其中，外加剂为引气剂和减水剂，且引气剂的重量为减水剂的1‰～3‰；混凝土的水胶比为0.32～0.34；本发明通过降低水胶比，使混凝土强度达到标准；通过添加减水剂，改善混凝土的流动性，增加低气压干燥环境下混凝土的坍落度，保障混凝土的工作性能；通过添加引气剂，改善混凝土的微观结构，保障混凝土在高寒高海拔地区低温且大温差环境下的抗冻耐久性，增加混凝土的使用寿命。
Anti-freezing concrete suitable for high-cold and high-altitude areas
The invention discloses anti-freezing concrete suitable for high-cold and high-altitude regions. The anti-freezing concrete is prepared by mixing 480-490 parts by weight of cement, 720-730 parts by weight of fine aggregate, 1050-1100 parts by weight of coarse aggregate, 4.8-4.9 parts by weight of an additive and 156.8-163.2 parts by weight of water, wherein the additive comprises an air entrainingagent and a water reducing agent, and the weight of the air entraining agent is 0.1-0.3% of that of the water reducing agent; and the water-binder ratio of the concrete is 0.32 to 0.34. By reducing the water-binder ratio, the strength of the concrete reaches the standard; by adding the water reducing agent, the fluidity of the concrete is improved, the slump of the concrete in a low-pressure dryenvironment is increased, and the working performance of the concrete is guaranteed; by adding the air entraining agent, the microstructure of the concrete is improved, the anti-freezing durability ofthe concrete in a low-temperature and large-temperature-difference environment of a high-cold and high-altitude area is guaranteed, and the service life of the concrete is prolonged.
本发明公开了一种适用于高寒高海拔地区的抗冻混凝土，由480～490重量份的水泥、720～730重量份的细骨料、1050～1100重量份的粗骨料、4.8～4.9重量份的外加剂以及156.8～163.2重量份的水混合而成；其中，外加剂为引气剂和减水剂，且引气剂的重量为减水剂的1‰～3‰；混凝土的水胶比为0.32～0.34；本发明通过降低水胶比，使混凝土强度达到标准；通过添加减水剂，改善混凝土的流动性，增加低气压干燥环境下混凝土的坍落度，保障混凝土的工作性能；通过添加引气剂，改善混凝土的微观结构，保障混凝土在高寒高海拔地区低温且大温差环境下的抗冻耐久性，增加混凝土的使用寿命。
Anti-freezing concrete suitable for high-cold and high-altitude areas
一种适用于高寒高海拔地区的抗冻混凝土
WU YONG (Autor:in) / DENG XIANGHUI (Autor:in) / LIU WENJUN (Autor:in) / WANG RUI (Autor:in) / MAO BAODI (Autor:in) / LIU YIYUAN (Autor:in) / YANG SHAOPING (Autor:in) / WEI DONGFENG (Autor:in)
22.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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