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A platform for research: civil engineering, architecture and urbanism
Ultra-coarse machine-made sand super high-rise pumped high-strength concrete
The invention discloses ultra-coarse machine-made sand super high-rise pumped high-strength concrete. The concrete is prepared by mixing the following raw material components by mass, for every cubicmeter of the concrete, 400 to 420 kg of cement, 80 to 100 kg of mineral powder, 60 to 80 kg of fly ash, 20 to 40 kg of silica fume, 1000 to 1040 kg of ultra-coarse machine-made sand, 660 to 680 kg ofbroken stone, 155 to 165 kg of water and 5.6 to 7.7 kg of an additive. The concrete has the characteristics that all fine aggregates adopt the ultra-coarse machine-made sand, the fineness modulus reaches 3.6-4.1, the strength grade reaches C60 and above, the expansibility is greater than or equal to 680 mm, the dumping emptying time is less than or equal to 5.0 s, the working performance is excellent, and pumping construction requirements of super high-rise buildings can be met. By the adoption of the concrete, super-high-rise pumping of the ultra-coarse machine-made sand high-strength concrete is achieved, and the pressure of medium sand resource shortage is relieved to a certain extent.
本发明公开了一种特粗机制砂超高层泵送高强混凝土，所述混凝土由下述原材料组分拌制而成，按每立方米混凝土所含原材料质量计：水泥400~420kg、矿粉80~100kg、粉煤灰60~80kg、硅灰20~40kg、特粗机制砂1000~1040kg、碎石660~680kg、水155~165kg、外加剂5.6~7.7kg。该混凝土的特点是细骨料全部采用特粗机制砂，细度模数达3.6~4.1，强度等级达到C60及以上，扩展度≥680mm，倒桶排空时间≦5.0s，工作性能优良，能够满足超高层建筑泵送施工要求。本发明的应用实现了特粗机制砂高强混凝土的超高层泵送，在一定程度上缓解了中砂资源短缺的压力。
Ultra-coarse machine-made sand super high-rise pumped high-strength concrete
The invention discloses ultra-coarse machine-made sand super high-rise pumped high-strength concrete. The concrete is prepared by mixing the following raw material components by mass, for every cubicmeter of the concrete, 400 to 420 kg of cement, 80 to 100 kg of mineral powder, 60 to 80 kg of fly ash, 20 to 40 kg of silica fume, 1000 to 1040 kg of ultra-coarse machine-made sand, 660 to 680 kg ofbroken stone, 155 to 165 kg of water and 5.6 to 7.7 kg of an additive. The concrete has the characteristics that all fine aggregates adopt the ultra-coarse machine-made sand, the fineness modulus reaches 3.6-4.1, the strength grade reaches C60 and above, the expansibility is greater than or equal to 680 mm, the dumping emptying time is less than or equal to 5.0 s, the working performance is excellent, and pumping construction requirements of super high-rise buildings can be met. By the adoption of the concrete, super-high-rise pumping of the ultra-coarse machine-made sand high-strength concrete is achieved, and the pressure of medium sand resource shortage is relieved to a certain extent.
本发明公开了一种特粗机制砂超高层泵送高强混凝土，所述混凝土由下述原材料组分拌制而成，按每立方米混凝土所含原材料质量计：水泥400~420kg、矿粉80~100kg、粉煤灰60~80kg、硅灰20~40kg、特粗机制砂1000~1040kg、碎石660~680kg、水155~165kg、外加剂5.6~7.7kg。该混凝土的特点是细骨料全部采用特粗机制砂，细度模数达3.6~4.1，强度等级达到C60及以上，扩展度≥680mm，倒桶排空时间≦5.0s，工作性能优良，能够满足超高层建筑泵送施工要求。本发明的应用实现了特粗机制砂高强混凝土的超高层泵送，在一定程度上缓解了中砂资源短缺的压力。
Ultra-coarse machine-made sand super high-rise pumped high-strength concrete
一种特粗机制砂超高层泵送高强混凝土
LI SHAOPENG (author) / WANG JUN (author) / LI XI (author) / JIANG ZHEN (author) / LENG ZHENG (author) / TANG WANG (author) / CHEN BANGYUE (author) / LIU PAN (author) / LIU QIANG (author) / TANG ZIQI (author)
2020-06-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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