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author:

张鸿儒 (张鸿儒.) [1] | 季韬 (季韬.) [2] | 刘福江 (刘福江.) [3] | 何炳坚 (何炳坚.) [4] | 张松安 (张松安.) [5]

Indexed by:

PKU

Abstract:

采用铁尾矿粉取代石英粉配制超高性能混凝土(ultra-high performance concrete, UHPC),研究不同养护制度下掺铁尾矿粉UHPC力学性能.结果表明:随铁尾矿粉取代率增加, UHPC流动度略有下降,力学性能基本不变;与标准养护相比,恒温水养和蒸压养护下掺铁尾矿粉UHPC抗压、抗折强度及折压比显著提升.结合微观试验结果发现,铁尾矿粉取代石英粉对水泥石显微硬度及孔结构无不利影响.恒温水养和蒸压养护下掺铁尾矿粉UHPC的水泥水化更充分,水化产物Ca/Si比值下降,水泥石显微硬度增大、孔结构改善;蒸压养护还可能显著激发硅灰、石英粉和铁尾矿粉的火山灰活性,参与二次水化,生成结构...

Keyword:

养护制度 力学性能 微观性能 超高性能混凝土 铁尾矿粉

Community:

  • [ 1 ] 福州大学土木工程学院

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Source :

福州大学学报(自然科学版)

ISSN: 1000-2243

CN: 35-1337/N

Year: 2020

Issue: 01

Volume: 48

Page: 90-97

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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