A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a jet type ultra-high performance concrete slurry which is composed of cement, a mineral admixture, quartz sand, silica powder, attapulgite, a water reducing agent, a defoaming agent, fibers and water, and further comprises an anti-settling agent and a flocculant.The anti-settling agent is added to be matched with the attapulgite to improve the anti-sagging performance of the UHPC slurry, and the anti-sagging performance of the UHPC slurry is improved; meanwhile, fibers in the UHPC slurry can be effectively prevented from floating upwards, and the thickening, anti-vertical-flow and anti-settling effects of the UHPC slurry are enhanced; by adding the flocculating agent, ionic bonds or covalent bonds can be generated on the surfaces of cement particles, cement, aggregate, fibers and the like are firmly connected together, and the cohesiveness and filling property of the UHPC slurry are improved; a hose peristaltic mortar spraying machine is adopted, the problem that GRC equipment cannot spray UHPC slurry and fibers at the same time is solved, cement, aggregate and fibers can be evenly sprayed into a section mold during spraying, meanwhile, the spraying thickness of each layer is 10-20 mm, and the problems that due to the fact that the spraying amount of the GRC equipment is small, the number of interface layers is large, the porosity is large, and the strength is unstable are solved.
本申请公开了一种喷射型超高性能混凝土浆料，由水泥、矿物掺合料、石英砂、硅微粉、凹凸棒土、减水剂、消泡剂、纤维、水组成，还包括防沉降剂和絮凝剂，本发明通过添加防沉降剂配合凹凸棒土来增加UHPC浆料的抗流挂性能，同时可有效防止UHPC浆料中纤维上浮，增强其增稠、防垂流、防沉之效果；通过添加絮凝剂，能够在水泥颗粒表面生成离子键或共价键，将水泥、骨料、纤维等牢固地联结在一起，提高UHPC浆料的黏聚性和充填性；采用软管蠕动式砂浆喷涂机，解决了GRC设备不能同时喷涂UHPC浆料和纤维的问题，喷射时能够将水泥、骨料、纤维均匀喷射在型模内，同时每层喷射厚度在10～20mm，解决了GRC设备喷涂量小导致的界面层多、气孔率多、强度不稳定等问题。
The invention discloses a jet type ultra-high performance concrete slurry which is composed of cement, a mineral admixture, quartz sand, silica powder, attapulgite, a water reducing agent, a defoaming agent, fibers and water, and further comprises an anti-settling agent and a flocculant.The anti-settling agent is added to be matched with the attapulgite to improve the anti-sagging performance of the UHPC slurry, and the anti-sagging performance of the UHPC slurry is improved; meanwhile, fibers in the UHPC slurry can be effectively prevented from floating upwards, and the thickening, anti-vertical-flow and anti-settling effects of the UHPC slurry are enhanced; by adding the flocculating agent, ionic bonds or covalent bonds can be generated on the surfaces of cement particles, cement, aggregate, fibers and the like are firmly connected together, and the cohesiveness and filling property of the UHPC slurry are improved; a hose peristaltic mortar spraying machine is adopted, the problem that GRC equipment cannot spray UHPC slurry and fibers at the same time is solved, cement, aggregate and fibers can be evenly sprayed into a section mold during spraying, meanwhile, the spraying thickness of each layer is 10-20 mm, and the problems that due to the fact that the spraying amount of the GRC equipment is small, the number of interface layers is large, the porosity is large, and the strength is unstable are solved.
本申请公开了一种喷射型超高性能混凝土浆料，由水泥、矿物掺合料、石英砂、硅微粉、凹凸棒土、减水剂、消泡剂、纤维、水组成，还包括防沉降剂和絮凝剂，本发明通过添加防沉降剂配合凹凸棒土来增加UHPC浆料的抗流挂性能，同时可有效防止UHPC浆料中纤维上浮，增强其增稠、防垂流、防沉之效果；通过添加絮凝剂，能够在水泥颗粒表面生成离子键或共价键，将水泥、骨料、纤维等牢固地联结在一起，提高UHPC浆料的黏聚性和充填性；采用软管蠕动式砂浆喷涂机，解决了GRC设备不能同时喷涂UHPC浆料和纤维的问题，喷射时能够将水泥、骨料、纤维均匀喷射在型模内，同时每层喷射厚度在10～20mm，解决了GRC设备喷涂量小导致的界面层多、气孔率多、强度不稳定等问题。
Spraying type ultra-high performance concrete slurry and preparation and spraying method thereof
一种喷射型超高性能混凝土浆料及其制备与喷射方法
TU WEIWEI (author)
2022-12-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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