A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pressure injection type steel fiber reinforced concrete and application thereof
The invention is suitable for the technical field of building materials, and provides pressure injection type steel fiber reinforced concrete and application thereof. The pressure injection type steelfiber concrete is prepared from the following components in proportion: 556 to 563 kg/m < 3 > of cement, 101 to 108 kg/m < 3 > of fly ash, 33 to 37 kg/m < 3 > of silica fume, 904 to 908 kg/m < 3 > offine aggregate, 740 to 743 kg/m < 3 > of coarse aggregate, 78 to 79 kg/m < 3 > of steel fiber, 180 to 198 kg/m < 3 > of water and 13 to 18 kg/m < 3 >. The pressure injection type steel fiber concreteis high in liquidity, has good pumping performance, meets the pumping and pressure injection process requirements, can fill shield tail gaps, is free of defects and holes after form removal, and meets the self-filling compaction performance; the pressure injection type steel fiber reinforced concrete can keep excellent working performance for a long time, and the 28d compressive strength and 28dflexural-tensile strength of the pressure-injection type steel fiber reinforced concrete can reach 10.1 MPa and are higher than 1.2 times of performance index requirements; the pressure injection typesteel fiber concrete is not dispersed when passing through water, and the water-retaining property and the early strength of concrete slurry are effectively improved.
本发明适用于建筑材料技术领域，提供了一种压注式钢纤维混凝土及其应用。该压注式钢纤维混凝土中成分单方用量配比如下：水泥556～563kg/m3、粉煤灰101～108kg/m3、硅灰33～37kg/m3、细集料904～908kg/m3、粗集料740～743kg/m3、钢纤维78～79kg/m3、水180～198kg/m3、外加剂13～18kg/m3。本发明压注式钢纤维混凝土的流动性高，具有良好的泵送性能，满足泵送及压注工艺要求，能填充盾尾空隙，拆模后混凝土无缺陷及孔洞，满足自充填密实性能；本发明压注式钢纤维混凝土可在较长时间内保持优异的工作性能，其28d抗压强度和28d抗弯拉强度可达10.1MPa，均高于1.2倍的性能指标要求；本申请可实现过水不分散，且有效提高混凝土浆体保水性及早期强度。
Pressure injection type steel fiber reinforced concrete and application thereof
The invention is suitable for the technical field of building materials, and provides pressure injection type steel fiber reinforced concrete and application thereof. The pressure injection type steelfiber concrete is prepared from the following components in proportion: 556 to 563 kg/m < 3 > of cement, 101 to 108 kg/m < 3 > of fly ash, 33 to 37 kg/m < 3 > of silica fume, 904 to 908 kg/m < 3 > offine aggregate, 740 to 743 kg/m < 3 > of coarse aggregate, 78 to 79 kg/m < 3 > of steel fiber, 180 to 198 kg/m < 3 > of water and 13 to 18 kg/m < 3 >. The pressure injection type steel fiber concreteis high in liquidity, has good pumping performance, meets the pumping and pressure injection process requirements, can fill shield tail gaps, is free of defects and holes after form removal, and meets the self-filling compaction performance; the pressure injection type steel fiber reinforced concrete can keep excellent working performance for a long time, and the 28d compressive strength and 28dflexural-tensile strength of the pressure-injection type steel fiber reinforced concrete can reach 10.1 MPa and are higher than 1.2 times of performance index requirements; the pressure injection typesteel fiber concrete is not dispersed when passing through water, and the water-retaining property and the early strength of concrete slurry are effectively improved.
本发明适用于建筑材料技术领域，提供了一种压注式钢纤维混凝土及其应用。该压注式钢纤维混凝土中成分单方用量配比如下：水泥556～563kg/m3、粉煤灰101～108kg/m3、硅灰33～37kg/m3、细集料904～908kg/m3、粗集料740～743kg/m3、钢纤维78～79kg/m3、水180～198kg/m3、外加剂13～18kg/m3。本发明压注式钢纤维混凝土的流动性高，具有良好的泵送性能，满足泵送及压注工艺要求，能填充盾尾空隙，拆模后混凝土无缺陷及孔洞，满足自充填密实性能；本发明压注式钢纤维混凝土可在较长时间内保持优异的工作性能，其28d抗压强度和28d抗弯拉强度可达10.1MPa，均高于1.2倍的性能指标要求；本申请可实现过水不分散，且有效提高混凝土浆体保水性及早期强度。
Pressure injection type steel fiber reinforced concrete and application thereof
一种压注式钢纤维混凝土及其应用
WANG HEQI (author) / WANG CHUANQI (author) / YIN HUABIN (author) / HUANG DENGXIA (author) / ZHANG XIANGYANG (author) / WU TELIGEN (author) / XIONG WEN (author)
2021-03-30
Patent
Electronic Resource
Chinese
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