Fatigue Resistance of Fiber Reinforced Lightweight Aggregate Concrete with High Content Mineral Admixture

Abstract

Abstract: To study the fatigue resistance of fiber reinforced lightweight aggregate concrete, constant stress cyclic compression tests were conducted to investigate the fatigue stress-strain response. The experiment used 20% (mass fraction) fly ash and 50% (mass fraction) granulated blast furnace slag to partially replace cement, and the experimental variables were single or mixed with different amounts of steel fibers and PVA fibers. The results show that with the increase of number of cycles loading, the number of macroscopic cracks in steel fiber reinforced concrete is more than that in PVA fiber reinforced concrete. The failure modes of specimens are manifested as the rupture of lightweight aggregate and the gradual extraction (steel fibers) or fracture (PVA fibers) of fibers. Steel fiber reinforced concrete has the highest fatigue strain and residual strain, while hybrid fiber concrete has the lowest. At the same stress level, hybrid fiber concrete has the longest fatigue life, while steel fiber concrete has the shortest. The ultimate fatigue damage of steel fiber concrete is higher than that of PVA fiber concrete and hybrid fiber concrete, and the difference gradually decreases with the decrease of maximum stress level.

Key words: lightweight aggregate concrete, fly ash, blast furnace slag, steel fiber, PVA fiber, fatigue resistance, fatigue life

CLC Number:

U213.1

LI Haijiao, WANG Jiajun, HAN Xiping, TAO Qi, ZHANG Shilong. Fatigue Resistance of Fiber Reinforced Lightweight Aggregate Concrete with High Content Mineral Admixture[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(8): 2856-2864.

References

[1] YE Y X, WANG Z B, XIE F L, et al. Mechanical properties of steel fiber reinforced high-strength lightweight aggregate concrete[J]. Journal of Building Materials, 2021, 24(1): 63-70.
[2] 王辉明, 贺正波, 朱文. 钢纤维轻骨料混凝土细观均匀化及受扭构件极限承载力研究[J]. 硅酸盐通报, 2021, 40(10): 3376-3384.
WANG H M, HE Z B, ZHU W. Microscopic homogenization of steel fiber lightweight aggregate concrete and ultimate bearing capacity of torsion components[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(10): 3376-3384 (in Chinese).
[3] 陈宇良, 朱玲, 张绍松, 等. 粉煤灰陶粒混凝土三轴受压破坏机制及强度准则[J]. 硅酸盐学报, 2022, 50(8): 2196-2204.
CHEN Y L, ZHU L, ZHANG S S, et al. Failure mechanism and strength criterion of fly ash ceramsite concrete under triaxial compression[J]. Journal of the Chinese Ceramic Society, 2022, 50(8): 2196-2204 (in Chinese).
[4] 王建新, 李晶, 赵仕宝, 等. 中国粉煤灰的资源化利用研究进展与前景[J]. 硅酸盐通报, 2018, 37(12): 3833-3841.
WANG J X, LI J, ZHAO S B, et al. Research progress and prospect of resource utilization of fly ash in China[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(12): 3833-3841 (in Chinese).
[5] 吴耀鹏, 姜磊, 张旭, 等. 大掺量粉煤灰再生混凝土高温后的抗冲击性能与抗渗性研究[J]. 建筑结构学报, 2022, 43(4): 124-133.
WU Y P, JIANG L, ZHANG X, et al. Study on impact resistance and impermeability of high-volume fly ash recycled aggregate concrete after exposure to high temperature[J]. Journal of Building Structures, 2022, 43(4): 124-133 (in Chinese).
[6] 肖建庄, 王春晖, 郑振鹏, 等. 再生骨料混凝土结构抗震设计关键问题[J]. 土木工程学报, 2020, 53(11): 46-54.
XIAO J Z, WANG C H, ZHENG Z P, et al. Key problems for seismic design of recycled aggregate concrete structures[J]. China Civil Engineering Journal, 2020, 53(11): 46-54 (in Chinese).
[7] PRADHAN S, KUMAR S, BARAI S V. Impact of particle packing mix design method on fracture properties of natural and recycled aggregate concrete[J]. Fatigue & Fracture of Engineering Materials & Structures, 2019, 42(4): 943-958.
[8] 贺正波, 王辉明. 结合均匀化理论对钢纤维混凝土梁的疲劳性能分析[J]. 硅酸盐通报, 2021, 40(8): 2574-2583.
HE Z B, WANG H M. Fatigue performance analysis of steel fiber reinforced concrete beams combined with homogenization theory[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(8): 2574-2583 (in Chinese).
[9] XU C, XIAO H, ZHANG B Y, et al. Fatigue behavior of steel fiber reinforced concrete composite girder under high cycle negative bending action[J]. Engineering Structures, 2021, 241: 112432.
[10] 高英力, 卜涛, 冷政, 等. 混杂纤维ECC-混凝土复合路面板弯曲疲劳特性研究[J]. 中南大学学报(自然科学版), 2021, 52(7): 2309-2320.
GAO Y L, BU T, LENG Z, et al. Study on flexural fatigue characteristics of hybrid fiber ECC-concrete composite pavement slab[J]. Journal of Central South University (Science and Technology), 2021, 52(7): 2309-2320 (in Chinese).
[11] 尹世平, 盛杰, 徐世烺. 疲劳荷载下纤维编织网增强混凝土加固RC梁的弯曲性能[J]. 水利学报, 2014, 45(12): 1481-1486.
YIN S P, SHENG J, XU S L. Experimental research on flexural performance of RC beams strengthened with TRC under fatigue load[J]. Journal of Hydraulic Engineering, 2014, 45(12): 1481-1486 (in Chinese).
[12] 杨润年, 魏德敏. 钢纤维混凝土等幅弯曲疲劳加载下的疲劳应变和疲劳模量以及损伤研究[J]. 工程力学, 2012, 29(11): 99-102+122.
YANG R N, WEI D M. Research on the fatigue strain and fatigue modulus and damage of steel fiber reinforced concrete under constant amplitude bending fatigue loading[J]. Engineering Mechanics, 2012, 29(11): 99-102+122 (in Chinese).
[13] BAJAJ V, SINGH S P, SINGH A P, et al. Flexural fatigue analysis of hybrid fibre-reinforced concrete[J]. Magazine of Concrete Research, 2012, 64(4): 361-373.
[14] CACHIM P B, FIGUEIRAS J A, PEREIRA P A A. Fatigue behavior of fiber-reinforced concrete in compression[J]. Cement and Concrete Composites, 2002, 24(2): 211-217.
[15] PASKOVA T, MEYER C. Low-cycle fatigue of plain and fiber-reinforced concrete[J]. ACI Materials Journal, 1997, 94(4): 273-286.
[16] NOUSHINI A, SAMALI B, VESSALAS K. Effect of polyvinyl alcohol (PVA) fibre on dynamic and material properties of fibre reinforced concrete[J]. Construction and Building Materials, 2013, 49: 374-383.
[17] 蒋亚清. 轻质高性能自密实混凝土研究[D]. 南京: 南京工业大学, 2008.
JIANG Y Q. Study on lightweight high performance self-compacting concrete[D]. Nanjing: Nanjing University of Technology, 2008 (in Chinese).
[18] WON J P, HONG B T, LEE S J, et al. Bonding properties of amorphous micro-steel fibre-reinforced cementitious composites[J]. Composite Structures, 2013, 102: 101-109.
[19] LEE M K, BARR B I G. An overview of the fatigue behaviour of plain and fibre reinforced concrete[J]. Cement and Concrete Composites, 2004, 26(4): 299-305.
[20] YANG K H. Tests on concrete reinforced with hybrid or monolithic steel and polyvinyl alcohol fibers[J]. ACI Materials Journal, 2011, 108(6): 664-672.
[21] XIAO J Z, LI H, YANG Z J. Fatigue behavior of recycled aggregate concrete under compression and bending cyclic loadings[J]. Construction and Building Materials, 2013, 38: 681-688.