钢纤维和混杂纤维对UHPC的力学性能影响研究及经济成本分析  

Study on the Effect of Steel Fiber and Hybrid Fiber on the Mechanical Properties of UHPC and Economic Cost Analysis

作　　者：谭晶晶 TAN Jingjing(China Railway 20th Bureau Group Co.,Ltd.,Xi'an 710032,China;China Railway Jian'an Engineering Design Institute Co.,Ltd.,Xi'an 710032,China)

机构地区：[1]中铁二十局集团有限公司,陕西西安710032 [2]中铁建安工程设计院有限公司,陕西西安710032

出　　处：《科技创新与生产力》2024年第5期91-94,98,共5页Sci-tech Innovation and Productivity

基　　金：中铁二十局集团有限公司科技研发项目(YF2212CL02A)。

摘　　要：本文研究了UHPC中掺入钢纤维和混杂纤维对其力学性能的影响,试验表明:UHPC在掺入钢纤维体积分数1.5%的基础上,外掺了体积分数均为0.5%的钢纤维、聚乙烯醇纤维(PVA)和聚丙烯纤维(PP)后,其抗压强度变化不大,其抗折强度依次增大,外掺了聚乙烯醇纤维的抗拉强度最大。相同体积分数的纤维掺量,由于有机纤维的密度较小,故其质量相应地减少,从而费用也相应地减少。In this paper,the effect of steel fiber and hybrid fiber mixed in UHPC on its mechanical properties is studied,and the test showed that UHPC is mixed with steel fiber,polyvinyl alcohol fiber(PVA)and polypropylene fiber(PP)with respectively 0.5%volume parameters on the basis of UHPC mixed with steel fiber with 1.5%volume parameters,and its compressive strength changed little,and its flexural strength increased sequentially,and the tensile strength of UHPC mixed with polyvinyl alcohol fiber is the largest.The fiber content of the same volume fraction,due to the small density of organic fiber,so its quality is correspondingly reduced,and the cost is also correspondingly reduced.

关 键 词：UHPC 钢纤维 有机纤维 力学性能影响 经济成本 

分 类 号：TU528[建筑科学—建筑技术科学]