Effect of steel fiber type and content on the dynamic tensile properties of ultra-high performance cementitious composites (UHPCC)

材料科学 复合材料 分离式霍普金森压力棒 极限抗拉强度 纤维 应变率 抗压强度 水泥 骨料(复合) 胶凝的 动态范围压缩 压缩(物理) 体积分数 拉伸试验 动载荷
作者
Kewei Liu,Ruitao Song,Jun Li,Tengfei Guo,Xudong Li,Jiacai Yang,Zhaoxi Yan
出处
期刊:Construction and Building Materials [Elsevier BV]
卷期号:342: 127908-127908 被引量:14
标识
DOI:10.1016/j.conbuildmat.2022.127908
摘要

As one of the most promising construction and building materials in the past 30 years, ultra-high performance concrete (UHPC) has attracted a great deal of attention and the studies on its improvement and dynamic tensile behaviors become more important for its wider use in the related fields. In this contribution, a novel ultra-high performance cementitious composites (UHPCC) was developed with lower cement content, 20% of cement is replaced with fly ash and blast furnace slag, to reduce the raw material cost and carbon emission in production. Uniaxial compression, quasi-static and dynamic splitting tests were carried out to investigate the influences of steel fiber type (straight fiber and waved fiber) and content (volume fraction (0%, 1%, 2%)) on the uniaxial compressive strength, static tensile strength and dynamic tensile behaviors for current UHPCC material. The dynamic splitting tests were conducted on 100 disc specimens (75 mm in diameter and 37.5 mm in thickness) under five different impact pressure at a strain-rate range of 20–110 s−1 to study the strain rate effect by using a Split Hopkinson pressure bar (SHPB) system and the samples' failure processes were captured by a high-speed camera. Based on the test results, the variations of energy absorption with the fiber type and content under static and dynamic tensile conditions are also analyzed, and combined with the experimental data from previous studies, an improved empirical tensile strength rate sensitivity (DIFft) model is proposed, which agrees well with the experiment results and can be used in the numerical simulation. At last, the failure process and pattern of different types of UHPCCs in the dynamic splitting test are also studied.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
爆米花应助黄婷采纳,获得10
刚刚
bosco完成签到,获得积分10
3秒前
4秒前
gloooow完成签到 ,获得积分10
4秒前
三十完成签到,获得积分20
6秒前
6秒前
7秒前
8秒前
hhw发布了新的文献求助10
8秒前
研友_VZG7GZ应助星空采纳,获得10
9秒前
9秒前
9秒前
10秒前
10秒前
达鸟啊完成签到,获得积分10
10秒前
10秒前
三十发布了新的文献求助10
11秒前
斯文败类应助dabai采纳,获得10
11秒前
小火苗发布了新的文献求助10
12秒前
小小橙发布了新的文献求助10
12秒前
14秒前
澡雪发布了新的文献求助10
14秒前
伶俐绮发布了新的文献求助10
14秒前
安详的自中完成签到,获得积分10
15秒前
shuiliuyuzai完成签到,获得积分10
15秒前
仿生人发布了新的文献求助10
16秒前
16秒前
Sunrising发布了新的文献求助10
17秒前
田様应助淡然的小萱采纳,获得10
17秒前
17秒前
书生发布了新的文献求助10
18秒前
18秒前
19秒前
Wenson发布了新的文献求助10
20秒前
tututu发布了新的文献求助30
20秒前
21秒前
3120221053完成签到,获得积分10
21秒前
22秒前
巧克力蛋仔完成签到 ,获得积分10
24秒前
dabai发布了新的文献求助10
24秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Effective Learning and Mental Wellbeing 400
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3976058
求助须知:如何正确求助?哪些是违规求助? 3520294
关于积分的说明 11202245
捐赠科研通 3256804
什么是DOI,文献DOI怎么找? 1798471
邀请新用户注册赠送积分活动 877610
科研通“疑难数据库(出版商)”最低求助积分说明 806496