Analysis of Acoustic Emission Characteristic Parameters During Whole Damage Process of Concrete under Uniaxial and Eccentric Compressions

Abstract

Abstract: Damage evolution process (DEP) of concrete can be evaluated by acoustic emission (AE) technology. In order to resonably describe the DEP of concrete, AE test of the whole process of concrete damage under uniaxial and eccentric compressions were carried out and the evolution law of AE characteristic parameters (AECPs) in the whole process of concrete damge were analyzed. Moreover, the optimal AECPs were resonable selected, and the relationship between the characteristic points of stress-strain curve and AECPs was revealed. Results show that the AECPs including counts, duration, amplitude, signal strength and average frequency well describe DEP of concrete. Meanwhile, there is a high correlation between characteristic points of AECPs and stress-strain curve during the compression failure of the concrete specimen. The first demarcation point of AECPs corresponds to the starting point of elastic stage of stress-strain curve, the second demarcation point corresponds to the peak stress point of stress-strain curve, and the maximum mutation point of signal strength corresponds to the cracking point of stress-strain curve.

Key words: concrete, damage evolution, acoustic emission characteristic parameter, uniaxial compression, eccentric compression, stress-strain curve

CLC Number:

TU528.01

ZENG Zhiwei, LIANG Jian, ZENG Yuxin, YU Bo. Analysis of Acoustic Emission Characteristic Parameters During Whole Damage Process of Concrete under Uniaxial and Eccentric Compressions[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(5): 1599-1608.

References

[1] XU J, ASHRAF S, KHAN S, et al. Micro-cracking pattern recognition of hybrid CNTs/GNPs cement pastes under three-point bending loading using acoustic emission technique[J]. Journal of Building Engineering, 2021, 42: 102816.
[2] GAO Y, SUN H K. Influence of initial defects on crack propagation of concrete under uniaxial compression[J]. Construction and Building Materials, 2021, 277: 122361.
[3] ZHOU Y, YU X, GUO Z Q, et al. On acoustic emission characteristics, initiation crack intensity, and damage evolution of cement-paste backfill under uniaxial compression[J]. Construction and Building Materials, 2021, 269: 121261.
[4] 王兵,刘泽良,卓晓晖,等.基于声发射的三点弯曲混凝土梁损伤演化表征[J].硅酸盐通报,2019,38(11):3663-3669.
WANG B, LIU Z L, ZHUO X H, et al. Damage evolution characterization of concrete beams under three-point bending based on acoustic emission[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(11): 3663-3669 (in Chinese).
[5] 王文杰,磨季云.尾矿砂改性混凝土的强度与声发射损伤特征研究[J].硅酸盐通报,2021,40(10):3450-3456.
WANG W J, MO J Y. Strength and acoustic emission damage characteristics of tailing sand modified concrete[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(10): 3450-3456 (in Chinese).
[6] 关虓,邱继生,戴俊,等.煤矸石混凝土轴心受压声发射特性与损伤模型研究[J].建筑材料学报,2019,22(3):459-466.
GUAN X, QIU J S, DAI J, et al. Acoustic emission characteristics and damage model of coal gangue concrete under axial compression[J]. Journal of Building Materials, 2019, 22(3): 459-466 (in Chinese).
[7] 崔溦,刘曼曼,宋慧芳,等.基于声发射技术的含初始缺陷混凝土破坏分析[J].水力发电学报,2020,39(8):36-45.
CUI W, LIU M M, SONG H F, et al. Failure analysis of concrete with initial defects based on acoustic emission technology[J]. Journal of Hydroelectric Engineering, 2020, 39(8): 36-45 (in Chinese).
[8] WANG Y, GE L, ZHANG T T, et al. Discussion of the definition for acoustic emission event in the time series of concrete damage process[J]. Russian Journal of Nondestructive Testing, 2019, 55(2): 129-135.
[9] MA G F, DU Q J. Structural health evaluation of the prestressed concrete using advanced acoustic emission (AE) parameters[J]. Construction and Building Materials, 2020, 250: 118860.
[10] 陈徐东,黄业博,陈晨.橡胶自密实混凝土断裂性能及声发射特征[J].建筑材料学报,2021,24(4):758-765.
CHEN X D, HUANG Y B, CHEN C. Fracture properties and acoustic emission characteristics of rubber self-compacting concrete[J]. Journal of Building Materials, 2021, 24(4): 758-765 (in Chinese).
[11] 赖于树,熊燕,程龙飞.混凝土受载试验全过程声发射特性研究与应用[J].建筑材料学报,2015,18(3):380-386.
LAI Y S, XIONG Y, CHENG L F. Study of characteristics of acoustic emission during entire loading tests of concrete and its application[J]. Journal of Building Materials, 2015, 18(3): 380-386 (in Chinese).
[12] WU K R, CHEN B, YAO W. Study of the influence of aggregate size distribution on mechanical properties of concrete by acoustic emission technique[J]. Cement and Concrete Research, 2001, 31(6): 919-923.
[13] 周兴宇,杨鼎宜,李玉寿,等.基于声发射损伤监测技术的高温后混凝土受压本构关系研究[J].硅酸盐通报,2019,38(12):3980-3987.
ZHOU X Y, YANG D Y, LI Y S, et al. Constitutive relationship of concrete under compressive after high temperature based on acoustic emission damage monitoring technology[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(12): 3980-3987 (in Chinese).
[14] YUN H D, CHOI W C, SEO S Y. Acoustic emission activities and damage evaluation of reinforced concrete beams strengthened with CFRP sheets[J]. NDT & E International, 2010, 43(7): 615-628.
[15] LEE J W, KIM H, OH T M. Acoustic emission characteristics during uniaxial compressive loading for concrete specimens according to sand content ratio[J]. KSCE Journal of Civil Engineering, 2020, 24(9): 2808-2823.
[16] 吴胜兴,王岩,李佳,等.混凝土静态轴拉声发射试验相关参数研究[J].振动与冲击,2011,30(5):196-204.
WU S X, WANG Y, LI J, et al. Parameters of acoustic emission test of concrete under static uniaxial tension[J]. Journal of Vibration and Shock, 2011, 30(5): 196-204 (in Chinese).