Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-viscosity high-cohesiveness ultra-high performance concrete and preparation method thereof
The concrete is prepared from the following raw materials in parts by weight: 515 to 625 parts of cement, 200 to 260 parts of fly ash, 120 to 170 parts of silica fume, 185 to 215 parts of limestone powder, 1.0 to 1.3 parts of graphene oxide, 900 to 1100 parts of fine aggregate, 23.4 to 30.1 parts of a composite water reducing agent, 0.035 to 0.061 part of an air entraining agent, 140 to 180 parts of steel fiber and 172 to 185 parts of water. The ultrahigh-performance concrete disclosed by the invention has the characteristics of low viscosity, high cohesiveness, high mechanical property and the like, can effectively improve the pouring and pumping construction performance of the ultrahigh-performance concrete under complex working conditions, the cohesiveness of the ultrahigh-performance concrete with old bridge concrete, steel structures and the like and the like, and ensures the structural bearing capacity of a reinforced bridge structure in multiple aspects; the service life of bridge engineering is prolonged.
本发明公开了一种低粘度高粘结性超高性能混凝土，包括以下重量份数的原料：水泥515～625份，粉煤灰200～260份，硅灰120～170份，石灰石粉185～215份，氧化石墨烯1.0～1.3份，细骨料900～1100份，复合减水剂23.4～30.1份，引气剂0.035～0.061份，钢纤维140～180份，水172～185份。本发明所述超高性能混凝土兼顾低粘度、高粘结性、和高力学性能等特性，可有效提升复杂工况条件下超高性能混凝土的浇筑泵送施工性能及其与旧桥混凝土及钢结构等的粘结性能等，多方位保证桥梁结构加固后的结构承载力，延长桥梁工程服役寿命。
Low-viscosity high-cohesiveness ultra-high performance concrete and preparation method thereof
The concrete is prepared from the following raw materials in parts by weight: 515 to 625 parts of cement, 200 to 260 parts of fly ash, 120 to 170 parts of silica fume, 185 to 215 parts of limestone powder, 1.0 to 1.3 parts of graphene oxide, 900 to 1100 parts of fine aggregate, 23.4 to 30.1 parts of a composite water reducing agent, 0.035 to 0.061 part of an air entraining agent, 140 to 180 parts of steel fiber and 172 to 185 parts of water. The ultrahigh-performance concrete disclosed by the invention has the characteristics of low viscosity, high cohesiveness, high mechanical property and the like, can effectively improve the pouring and pumping construction performance of the ultrahigh-performance concrete under complex working conditions, the cohesiveness of the ultrahigh-performance concrete with old bridge concrete, steel structures and the like and the like, and ensures the structural bearing capacity of a reinforced bridge structure in multiple aspects; the service life of bridge engineering is prolonged.
本发明公开了一种低粘度高粘结性超高性能混凝土，包括以下重量份数的原料：水泥515～625份，粉煤灰200～260份，硅灰120～170份，石灰石粉185～215份，氧化石墨烯1.0～1.3份，细骨料900～1100份，复合减水剂23.4～30.1份，引气剂0.035～0.061份，钢纤维140～180份，水172～185份。本发明所述超高性能混凝土兼顾低粘度、高粘结性、和高力学性能等特性，可有效提升复杂工况条件下超高性能混凝土的浇筑泵送施工性能及其与旧桥混凝土及钢结构等的粘结性能等，多方位保证桥梁结构加固后的结构承载力，延长桥梁工程服役寿命。
Low-viscosity high-cohesiveness ultra-high performance concrete and preparation method thereof
一种低粘度高粘结性超高性能混凝土及其制备方法
ZHENG QUNHUA (Autor:in) / CAI TONGXING (Autor:in) / GAO JINGSONG (Autor:in) / ZHANG HAO (Autor:in) / XIA QIANJIN (Autor:in) / LIANG GUANTING (Autor:in) / PING XUEYUAN (Autor:in)
27.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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