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A platform for research: civil engineering, architecture and urbanism
Self-compacting fair-faced concrete
The invention provides a self-compacting fair-faced concrete. According to the invention, cement is used as a cementing material, stone is used as a coarse aggregate, sand is used as a fine aggregate,and fly ash and slag are used as admixtures, and by controlling the specific ratio and a certain specification of the components, the concrete can achieve a fair-faced effect, and achieves a self-compaction effect on the premise of no segregation or bleeding. Specifically, high fluidity is achieved by adjusting the formula to reduce the vibration strength in the construction process, meanwhile, proper vibration is supplemented in the pier body concrete pouring process to achieve the defoaming purpose, and the fair-faced effect is achieved. Meanwhile, on the premise that segregation and bleeding are avoided, the viscosity of the newly-mixed concrete is reduced, and the self-compacting effect is achieved.
本发明提供了一种自密实清水混凝土。本发明以水泥为胶凝材料，以石子为粗骨料，砂为细骨料，粉煤灰及矿渣为掺合料，通过控制各组分为上述特定配比以及一定的规格，使混凝土能够实现清水效果，且在不离析泌水的前提下，达到自密实效果。具体的，通过调整配方实现大流动性以降低施工过程中的振捣强度，同时墩身混凝土浇筑过程中辅以适度振捣达到“消泡”目的，实现清水效果；同时，在保证不离析泌水的前提下，降低新拌混凝土的黏度，实现自密实效果。
Self-compacting fair-faced concrete
The invention provides a self-compacting fair-faced concrete. According to the invention, cement is used as a cementing material, stone is used as a coarse aggregate, sand is used as a fine aggregate,and fly ash and slag are used as admixtures, and by controlling the specific ratio and a certain specification of the components, the concrete can achieve a fair-faced effect, and achieves a self-compaction effect on the premise of no segregation or bleeding. Specifically, high fluidity is achieved by adjusting the formula to reduce the vibration strength in the construction process, meanwhile, proper vibration is supplemented in the pier body concrete pouring process to achieve the defoaming purpose, and the fair-faced effect is achieved. Meanwhile, on the premise that segregation and bleeding are avoided, the viscosity of the newly-mixed concrete is reduced, and the self-compacting effect is achieved.
本发明提供了一种自密实清水混凝土。本发明以水泥为胶凝材料，以石子为粗骨料，砂为细骨料，粉煤灰及矿渣为掺合料，通过控制各组分为上述特定配比以及一定的规格，使混凝土能够实现清水效果，且在不离析泌水的前提下，达到自密实效果。具体的，通过调整配方实现大流动性以降低施工过程中的振捣强度，同时墩身混凝土浇筑过程中辅以适度振捣达到“消泡”目的，实现清水效果；同时，在保证不离析泌水的前提下，降低新拌混凝土的黏度，实现自密实效果。
Self-compacting fair-faced concrete
一种自密实清水混凝土
LI SHENGFEI (author) / HUO MINGFEI (author) / PANG PING (author) / JIA DEWU (author) / GUAN YUNTAO (author) / WANG JINGQI (author)
2020-11-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
| European Patent Office | 2020