Comparative study on the dynamic mechanical properties of steel fiber reinforced concrete at high temperatures and after high temperature cooling

材料科学 分离式霍普金森压力棒 复合材料 纤维混凝土 抗压强度 变形(气象学) 应变率 纤维 动载荷 消散 热力学 物理
作者
Liang Li,Zichen Wang,Jun Wu,Xiuli Du,Hongwei Wang,Wenli Liu
出处
期刊:Construction and Building Materials [Elsevier BV]
卷期号:346: 128448-128448 被引量:19
标识
DOI:10.1016/j.conbuildmat.2022.128448
摘要

The mechanical behaviors of structure concrete can degrade significantly at high temperatures from fire. The mechanical performance of structure concrete may recover to some extent during the subsequent cooling process after fire. A comparative study on the dynamic performance of concrete between at high temperature and after cooling down is necessary to predict dynamic response of structures subjected to fire or blast loads more precisely. In this paper, the dynamic characteristics of Steel Fiber Reinforced Concrete (SFRC) after high temperature cooling were examined with the use of Split Hopkinson Pressure Bar (SHPB) and compared with the test results at high temperature. The dynamic compressive strength, dynamic increase factor (DIF) of stress and peak strain of SFRC with different fiber volume (0%,1%,2%) after natural cooling from different target temperatures (200 ℃, 400 ℃, 600 ℃) to ambient temperature were obtained and compared. Experimental results show that the dynamic compressive strength and peak strain of the specimen first increases and then decreases with the increase of the strain rate cause the high temperature cooling process made the specimens prone to local failure at high strain rates. The mechanical properties of SFRC such as strength can be well recovered during the natural cooling process after high temperature. The deformation capacity and energy dissipation capacity of different types of concrete after high temperature cooling are greatly improved compared with that under high temperatures.
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
刚刚
李白完成签到,获得积分10
1秒前
正直涵菱发布了新的文献求助10
1秒前
感性的酬海完成签到,获得积分10
2秒前
王王的狗子完成签到 ,获得积分10
2秒前
innyjiang完成签到,获得积分10
4秒前
陆王牛马完成签到 ,获得积分10
5秒前
5秒前
Ava应助念念采纳,获得10
6秒前
LIAO完成签到,获得积分10
6秒前
迅速凝竹完成签到 ,获得积分10
8秒前
妮妮完成签到,获得积分10
9秒前
9秒前
哈哈哈完成签到,获得积分20
10秒前
快乐随心完成签到 ,获得积分10
11秒前
了一李完成签到 ,获得积分10
11秒前
fqk完成签到,获得积分10
11秒前
活泼新儿完成签到,获得积分10
11秒前
12秒前
老迟到的羊完成签到 ,获得积分10
12秒前
可爱的函函应助sl采纳,获得30
16秒前
CatC完成签到,获得积分10
16秒前
LIKO完成签到,获得积分10
16秒前
16秒前
16秒前
David发布了新的文献求助10
17秒前
17秒前
clock完成签到 ,获得积分10
17秒前
风中小懒虫完成签到,获得积分10
18秒前
cindy完成签到 ,获得积分10
19秒前
Tysonqu完成签到,获得积分10
19秒前
科研通AI2S应助Promise采纳,获得10
20秒前
21秒前
淡淡阁完成签到 ,获得积分10
21秒前
念念发布了新的文献求助10
21秒前
漂亮的秋天完成签到 ,获得积分10
23秒前
David完成签到,获得积分10
23秒前
Jason完成签到,获得积分10
23秒前
27秒前
28秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
Research on Disturbance Rejection Control Algorithm for Aerial Operation Robots 500
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 4038388
求助须知:如何正确求助?哪些是违规求助? 3576106
关于积分的说明 11374447
捐赠科研通 3305798
什么是DOI,文献DOI怎么找? 1819322
邀请新用户注册赠送积分活动 892672
科研通“疑难数据库(出版商)”最低求助积分说明 815029