Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Crack-control high-impermeability concrete shield segment and manufacturing method thereof
The invention relates to a crack-control high-impermeability concrete shield segment and a manufacturing method thereof.The concrete shield segment comprises composite fiber concrete and a reinforcement cage, and each cubic meter of the composite fiber concrete comprises 320-450 kg of cement, 140-170 kg of water, 1000-1250 kg of coarse aggregate, 550-750 kg of fine aggregate, 60-90 kg of mineral powder and fly ash, 25-80 kg of steel fibers and 0.9-3.0 kg of synthetic fibers; the cement-based composite material comprises a cementing material and further comprises a water reducing agent, a corrosion inhibitor and a hydrophobic admixture, the amount of the water reducing agent is 0.5%-2% of the mass of the cementing material, the amount of the corrosion inhibitor is 2%-5% of the mass of the cementing material, and the cementing material comprises cement, mineral powder and fly ash. The qualified steel fiber fine aggregate concrete finished product in which the steel fibers and the synthetic fibers are uniformly dispersed has excellent constructability, ensures that the fibers are uniformly dispersed and no fiber exposure phenomenon exists on the surface of a duct piece, and meets the quality requirement of the duct piece; the prepared duct piece has the advantages of high crack control performance and high impermeability.
本发明涉及一种控裂高抗渗混凝土盾构管片及其制作方法，所述混凝土盾构管片包括复合纤维混凝土和钢筋笼，每立方米所述复合纤维混凝土包括：水泥320～450kg，水140～170kg，粗骨料1000～1250kg，细骨料550～750kg，矿粉与粉煤灰总量60～90kg，钢纤维25～80kg，合成纤维0.9～3.0kg，还包括减水剂、阻锈剂、憎水型外掺料，所述减水剂的量为胶凝材料质量的0.5％～2％，所述阻锈剂的量为胶凝材料质量的2％～5％，所述胶凝材料包括水泥、矿粉与粉煤灰。本发明制备得到钢纤维与合成纤维均匀分散的合格钢纤维细石混凝土成品，其具备优异的可施工性，保证纤维分散均匀，管片表面无纤维裸露现象，满足管片质量要求；制备的管片具备高控裂性能、高抗渗性能的优点。
Crack-control high-impermeability concrete shield segment and manufacturing method thereof
The invention relates to a crack-control high-impermeability concrete shield segment and a manufacturing method thereof.The concrete shield segment comprises composite fiber concrete and a reinforcement cage, and each cubic meter of the composite fiber concrete comprises 320-450 kg of cement, 140-170 kg of water, 1000-1250 kg of coarse aggregate, 550-750 kg of fine aggregate, 60-90 kg of mineral powder and fly ash, 25-80 kg of steel fibers and 0.9-3.0 kg of synthetic fibers; the cement-based composite material comprises a cementing material and further comprises a water reducing agent, a corrosion inhibitor and a hydrophobic admixture, the amount of the water reducing agent is 0.5%-2% of the mass of the cementing material, the amount of the corrosion inhibitor is 2%-5% of the mass of the cementing material, and the cementing material comprises cement, mineral powder and fly ash. The qualified steel fiber fine aggregate concrete finished product in which the steel fibers and the synthetic fibers are uniformly dispersed has excellent constructability, ensures that the fibers are uniformly dispersed and no fiber exposure phenomenon exists on the surface of a duct piece, and meets the quality requirement of the duct piece; the prepared duct piece has the advantages of high crack control performance and high impermeability.
本发明涉及一种控裂高抗渗混凝土盾构管片及其制作方法，所述混凝土盾构管片包括复合纤维混凝土和钢筋笼，每立方米所述复合纤维混凝土包括：水泥320～450kg，水140～170kg，粗骨料1000～1250kg，细骨料550～750kg，矿粉与粉煤灰总量60～90kg，钢纤维25～80kg，合成纤维0.9～3.0kg，还包括减水剂、阻锈剂、憎水型外掺料，所述减水剂的量为胶凝材料质量的0.5％～2％，所述阻锈剂的量为胶凝材料质量的2％～5％，所述胶凝材料包括水泥、矿粉与粉煤灰。本发明制备得到钢纤维与合成纤维均匀分散的合格钢纤维细石混凝土成品，其具备优异的可施工性，保证纤维分散均匀，管片表面无纤维裸露现象，满足管片质量要求；制备的管片具备高控裂性能、高抗渗性能的优点。
Crack-control high-impermeability concrete shield segment and manufacturing method thereof
一种控裂高抗渗混凝土盾构管片及其制作方法
TANG WENBO (Autor:in) / DU KUN (Autor:in) / XU FUDING (Autor:in) / WANG JUE (Autor:in) / XUE GUANGQIAO (Autor:in) / SUN WENHAO (Autor:in) / ZHANG DI (Autor:in) / PENG CHANGSHENG (Autor:in) / HE YINGDAO (Autor:in)
05.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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