摘要
文中通过抗压和三点弯曲试验,研究了玻化微珠掺量和水泥/粉煤灰比值(C/F)对UHTCC抗压和抗折性能的影响。试验结果表明,较大的C/F值和较低的玻化微珠掺量能提高UHTCC的抗压强度,但对抗折强度影响较小。适度控制C/F值并增加玻化微珠用量有利于提升UHTCC的变形能力,当C/F为1:4,玻化微珠掺量为73.3g/L,弯曲峰值应力对应挠度为3.4mm,玻化微珠的引入会造成更明显的多缝开裂。
The effects of various vitrified beads content,and the ratio of cement to fly ash(C/F)on the mechanical properties of ultra-high toughness cementitious composites(UHTCC)are investigated by compression and three-point bending tests.The results show that the compressive strength of UHTCC is improved with increase of C/F and decrease of vitrified beads content.The fluctuation of vitrified beads content and C/F have little effect on the flexural strength of UHTCC.The deformation of UHTCC can be improved by increasing vitrified beads content and using appropriate C/F.When C/F is 1:4,the content of vitrified bead is 73.3g/L,and the corresponding deflection of bending peak stress is 3.4mm,the introduction of vitrified bead causes obvious cracks.
作者
武金鹏
胡安辉
管泽雨
李翔
裘肖雨
李贺东
WU Jinpeng;HU Anhui;GUAN Zeyu;LI Xiang;QIU Xiaoyu;LI Hedong(Huadong Engineering Corporation Limited,Hangzhou 310005,China;Zhejiang Science-Technology University,Department of Architecture Engineering,Hangzhou 310018,China)
出处
《低温建筑技术》
2023年第1期32-35,共4页
Low Temperature Architecture Technology
基金
国家自然科学基金资助面上项目“利用膨胀珍珠岩颗粒改善UHTCC应变硬化性能研究”(51978624)
新疆建设兵团重点领域科技攻关计划项目(2019AB016)
中国电建集团华东勘测设计研究院有限公司—浙江理工大学时尚学院科技项目。
