|Table of Contents|

Bending fatigue characteristics of frozen-thawed basalt fiber recycled concrete(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2023年01期
Page:
14-20
Research Field:
建筑材料
Publishing date:

Info

Title:
Bending fatigue characteristics of frozen-thawed basalt fiber recycled concrete
Author(s):
HOU Yongli1; 2; YU Zhengxing1; ZHOU Leilei3;  LYU Dongshuo1
(1. School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, Inner Mongolia, China; 2. Inner Mongolia Autonomous Region Building Inspection Appraisal and Safety Assessment Engineering Technology Research Center, Inner Mongolia University of Technology, Hohhot 010051, Inner Mongolia, China; 3. China Shanxi Sijian Group Co., Ltd, Taiyuan 030012, Shanxi, China)
Keywords:
recycled concrete;  basalt fiber;  freeze-thaw cycle;  fatigue life;  fatigue equation
PACS:
TU502
DOI:
10.19815/j.jace.2021.09007
Abstract:
Based on the climatic characteristics of northern China and the mechanical characteristics of concrete pavement, the influence of freeze-thaw damage on the bending fatigue characteristics of basalt fiber recycled concrete(BFRC)was investigated. Firstly, the fast freezing method was used in the freeze-thaw cycle test of BFRC to investigate the changes of freeze-thaw damage morphology, mass, relative dynamic elastic modulus and relative flexural strength of BFRC. Then, the bending fatigue properties of BFRC after different freeze-thaw cycles were investigated by experiment, and the influence of freeze-thaw cycles and stress levels on the fatigue life of BFRC was analyzed. Finally, the fatigue life of BFRC was analyzed based on two-parameter Weibull distribution theory. The fatigue life of BFRC with different failure probability was predicted and the double logarithmic fatigue equations with failure probability of 0.05 and 0.5 were established. The results show that with the increase of the freeze-thaw cycles, the damage degree of specimen surface and the mass loss rate increase gradually, and the relative dynamic elastic modulus and relative flexural strength decrease gradually. When the times of freeze-thaw cycle reach 225, the relative dynamic elastic modulus and relative flexural strength of BFRC decrease by 12.4% and 35.1% respectively compared with those before freeze-thaw cycle. With the increase of freeze-thaw cycle and stress level, bending fatigue life decreases gradually. The bending fatigue life of freeze-thawed BFRC obeys two-parameter Weibull distribution. The predicted fatigue life with failure probability of 0.5 is very close to the average fatigue life obtained by test. The established double logarithmic fatigue equation can well reflect the relationship between stress level S and fatigue life N of frozen-thawed BFRC. The research findings provide a reliable basis for the safe application of BFRC in pavement structure.

References:

[1] 张 娜,周 健,徐名凤,等.玄武岩纤维高延性水泥基复合材料的动态力学性能[J].爆炸与冲击,2020,40(5):45-53.
ZHANG Na,ZHOU Jian,XU Mingfeng,et al.Dynamic mechanical properties of basalt fiber engineered cementitious composites[J].Explosion and Shock Waves,2020,40(5):45-53.
[2]李 飞,陈鲤波,马建宁,等.玄武岩-聚乙烯醇混杂纤维水泥基材料的耐久性研究[J].功能材料,2020,51(3):3139-3143.
LI Fei,CHEN Libo,MA Jianning,et al.Study on durability of basalt-polyvinyl alcohol hybrid fiber cement-based materials[J].Journal of Functional Materials,2020,51(3):3139-3143.
[3]BRANSTON J,DAS S,KENNO S Y,et al.Mechanical behaviour of basalt fibre reinforced concrete[J].Construction and Building Materials,2016,124:878-886.
[4]DONG J F,WANG Q Y,GUAN Z W.Material properties of basalt fibre reinforced concrete made with recycled earthquake waste[J].Construction and Building Materials,2017,130:241-251.
[5]DEBIEB F,COURARD L,KENAI S,et al.Mechanical and durability properties of concrete using contaminated recycled aggregates[J].Cement and Concrete Composites,2010,32(6):421-426.
[6]RICHARDSON A,COVENTRY K,BACON J.Freeze/thaw durability of concrete with recycled demolition aggregate compared to virgin aggregate concrete[J].Journal of Cleaner Production,2011,19(2/3):272-277.
[7]姚烈波.粉煤灰品质和取代率对再生混凝土抗冻性能影响[J].重庆建筑,2019,18(3):43-46.
YAO Liebo.Influence of quality and substitution rate of fly ash on anti-freeze performance of recycled coarse aggregate concrete[J].Chongqing Architecture,2019,18(3):43-46.
[8]吴瑾炎,李碧雄,王燕鹏,等.添加粉煤灰和硅粉的路面高性能再生混凝土冻融特性试验研究[J].混凝土,2014(4):66-69,73.
WU Jinyan,LI Bixiong,WANG Yanpeng,et al.Study on the freeze-thaw test of high-performance recycled concrete mixed with fly ash and silica fume used for pavement[J].Concrete,2014(4):66-69,73.
[9]张云飞,刘元珍,张泽平,等.再生保温混凝土冻融循环后抗压强度影响因素研究[J].中国科技论文,2016,11(9):1027-1030.
ZHANG Yunfei,LIU Yuanzhen,ZHANG Zeping,et al.Influence of experimental factor on compressive strength of recycled aggregate thermal insulation concrete after freeze-thaw Cycle[J].China Sciencepaper,2016,11(9):1027-1030.
[10]陈彦文,潘文浩,孙小巍.预处理再生骨料混凝土性能的试验研究[J].混凝土,2012(1):81-83.
CHEN Yanwen,PAN Wenhao,SUN Xiaowei.Performance study of pretreated concrete with recycled aggregate[J].Concrete,2012(1):81-83.
[11]王玲玲,陈彦文,潘文浩,等.制备工艺对再生混凝土耐久性影响研究[J].混凝土,2012(11):142-144.
WANG Lingling,CHEN Yanwen,PAN Wenhao,et al.Effects of manufacture technology on durability of recycled concrete[J].Concrete,2012(11):142-144.
[12]SAINI B S,SINGH S P.Flexural fatigue life analysis of self compacting concrete containing 100% coarse recycled concrete aggregates[J].Construction and Building Materials,2020,253:119176.
[13]LI W Z,CAI L C,WU Y G,et al.Assessing recycled pavement concrete mechanical properties under joint action of freezing and fatigue via RSM[J].Construction and Building Materials,2018,164:1-11.
[14]欧祖敏,孙 璐.冻融损伤混凝土的弯曲疲劳寿命可靠性分析[J].浙江大学学报(工学版),2017,51(6):1074-1081,1103.
OU Zumin,SUN Lu.Flexural fatigue-life reliability of frost-damaged concrete[J].Journal of Zhejiang University(Engineering Science),2017,51(6):1074-1081,1103.
[15]李召行.荷载与腐蚀冻融耦合及再生粗骨料性能对再生混凝土耐久性能的影响研究[D].南昌:南昌大学,2019.
LI Zhaohang.Research on the influence of coupling multi-factors of load and corrosion freeze-thaw and recycled coarse aggregate on durability of recycled concrete[D].Nanchang:Nanchang University,2019.
[16]HASAN M,UEDA T,SATO Y.Stress-strain relationship of frost-damaged concrete subjected to fatigue loading[J].Journal of Materials in Civil Engineering,2008,20(1):37-45.
[17]齐振麟.冻融损伤后再生混凝土单调及重复荷载下本构关系研究[D].哈尔滨:哈尔滨工业大学,2016.
QI Zhenlin.Study on constitutive relation of recycled aggregate concrete damaged by freeze-thaw under monotic and cyclic loading[D].Harbin:Harbin Institute of Technology,2016.

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Last Update: 2023-01-01