粗骨料对超高性能应变硬化水泥基复合材料（UHP-SHCC）性能的影响

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发布时间：2020-01-06 00:00:00

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粗骨料对超高性能应变硬化水泥基复合材料（UHP-SHCC）性能的影响

Influence of coarse aggregates on properties of ultra-high performance-strain hardening cementitious composites(UHP-SHCC)

2024年第6期

超高性能应变硬化水泥基复合材料（UHP-SHCC）；抗压强度；拉伸应变行为；粗骨料；钢纤维

Ultra-high performance strain-hardening cementitious composite(UHP-SHCC); Compressive strength; Tensile strain behavior; Coarse aggregate; Steel fiber

2024年第6期

10.19761/j.1000-4637.2024.06.059.05

国家自然科学基金项目（51878032）；北京市自然科学基金项目（8212013、8172036）；北京建工新型建材有限责任公司科技基金项目（RDJC202101、RDJC202201）。

丁宏1，2，张贵3，石小磊3，朋改非3，米应花2

1.北京建工新型建材有限责任公司，北京 100015；2.北京建工恒均工程检测有限公司，北京 102615；3.北京交通大学土木建筑工程学院，北京 100044

丁宏1，2，张贵3，石小磊3，朋改非3，米应花2

丁宏,张贵,石小磊,等.粗骨料对超高性能应变硬化水泥基复合材料（UHP-SHCC）性能的影响[J].混凝土与水泥制品,2024(6):59-63.

DING H,ZHANG G,SHI X L,et al.Influence of coarse aggregates on properties of ultra-high performance-strain hardening cementitious composites(UHP-SHCC)[J].China Concrete and Cement Products,2024(6):59-63.

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摘要：根据超高性能混凝土（UHPC）的制备理论和应变硬化水泥基复合材料（SHCC）的设计原理，制备了超高性能应变硬化水泥基复合材料(UHP-SHCC)，研究了钢纤维改性处理和粗骨料的级配（最大粒径分别为6.00、8.00、9.75 mm）与掺量（0、5%、11%、15%）对UHP-SHCC抗压强度和拉伸行为的影响。结果表明：与未改性钢纤维相比，改性钢纤维使UHP-SHCC的应变硬化行为更明显；通过合理调控粗骨料的级配和掺量，有效提高了UHP-SHCC的抗压强度，改善了UHP-SHCC的拉伸应变硬化效果，但随着龄期从7 d增至28 d，UHP-SHCC的应变硬化效果略有减弱。 Abstract: Based on the preparation theory of ultra-high performance concrete(UHPC) and the design principle of strain-hardening cement-based composite(SHCC), the ultra-high performance-strain hardening cementitious composite(UHP-SHCC) was prepared. The effects of steel fiber modification treatment, and the gradation(maximum particle size of 6.00, 8.00, 9.75 mm) and content(0, 5%, 11%, 15%) of coarse aggregates on the compressive strength and tensile behavior of UHP-SHCC were studied. The results show that, compared with unmodified steel fibers, modified steel fibers make the strain hardening behavior of UHP-SHCC more pronounced. By reasonably adjusting the gradation and content of coarse aggregates, the compressive strength and the tensile strain hardening effect of UHP-SHCC can be effectively improved. However, as the age increases from 7 d to 28 d, the strain hardening effect of UHP-SHCC slightly weakens.

英文名 : Influence of coarse aggregates on properties of ultra-high performance-strain hardening cementitious composites(UHP-SHCC)

刊期 : 2024年第6期

关键词 : 超高性能应变硬化水泥基复合材料（UHP-SHCC）；抗压强度；拉伸应变行为；粗骨料；钢纤维

Key words : Ultra-high performance strain-hardening cementitious composite(UHP-SHCC); Compressive strength; Tensile strain behavior; Coarse aggregate; Steel fiber

刊期 : 2024年第6期

DOI : 10.19761/j.1000-4637.2024.06.059.05

文章编号 :

基金项目 : 国家自然科学基金项目（51878032）；北京市自然科学基金项目（8212013、8172036）；北京建工新型建材有限责任公司科技基金项目（RDJC202101、RDJC202201）。

作者 : 丁宏1，2，张贵3，石小磊3，朋改非3，米应花2

单位 : 1.北京建工新型建材有限责任公司，北京 100015；2.北京建工恒均工程检测有限公司，北京 102615；3.北京交通大学土木建筑工程学院，北京 100044

丁宏1，2，张贵3，石小磊3，朋改非3，米应花2

丁宏,张贵,石小磊,等.粗骨料对超高性能应变硬化水泥基复合材料（UHP-SHCC）性能的影响[J].混凝土与水泥制品,2024(6):59-63.

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摘要

参数

结论

参考文献

引用本文

Abstract: Based on the preparation theory of ultra-high performance concrete(UHPC) and the design principle of strain-hardening cement-based composite(SHCC), the ultra-high performance-strain hardening cementitious composite(UHP-SHCC) was prepared. The effects of steel fiber modification treatment, and the gradation(maximum particle size of 6.00, 8.00, 9.75 mm) and content(0, 5%, 11%, 15%) of coarse aggregates on the compressive strength and tensile behavior of UHP-SHCC were studied. The results show that, compared with unmodified steel fibers, modified steel fibers make the strain hardening behavior of UHP-SHCC more pronounced. By reasonably adjusting the gradation and content of coarse aggregates, the compressive strength and the tensile strain hardening effect of UHP-SHCC can be effectively improved. However, as the age increases from 7 d to 28 d, the strain hardening effect of UHP-SHCC slightly weakens.

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粗骨料对超高性能应变硬化水泥基复合材料（UHP-SHCC）性能的影响

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