ANALYSIS OF FREEZE-THAW DETERIORATION AND DAMAGE CHARACTERISTICS OF EXISTING CRACKED CONCRETE

HUANG; Junbo; NING; Baokuan

doi:10.13204/j.gyjz202001023

Volume 50 Issue 1

Jan. 2020

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2020 > 50(1): 142-147

Li Yuqi, Xie Kanghe. PREDICTION AND ANALYSIS OF DEFORMATION OF DEEP EXCAVATION[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(9): 19-21,80. doi: 10.13204/j.gyjz200409006

Citation:

HUANG, Junbo, NING, Baokuan. ANALYSIS OF FREEZE-THAW DETERIORATION AND DAMAGE CHARACTERISTICS OF EXISTING CRACKED CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(1): 142-147. doi: 10.13204/j.gyjz202001023

Li Yuqi, Xie Kanghe. PREDICTION AND ANALYSIS OF DEFORMATION OF DEEP EXCAVATION[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(9): 19-21,80. doi: 10.13204/j.gyjz200409006

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ANALYSIS OF FREEZE-THAW DETERIORATION AND DAMAGE CHARACTERISTICS OF EXISTING CRACKED CONCRETE

doi: 10.13204/j.gyjz202001023

School of Architecture & Civil Engineering, Shenyang University of Technology, Shenyang 110870, China

Received Date: 2019-10-28

Abstract

Abstract

The pre-crack method was used to simulate the cracked concrete in the actual engineering. The damage degradation process and mechanical properties of the concrete with cracks under freeze-thaw cycles were studied. Through the observation of surface change, uniaxial compression and elastic modulus test of concrete specimens with and without pre-crack to study the freeze-thaw cycles effected on the elastic modulus, axial compressive strength, stress-strain relationship of specimens with and without pre-crack, the relationship between peak stress and peak strain as a function of freeze-thaw cycles was obtained. Combined with the damage mechanics, the effects of pre-formed cracks on the frost resistance of concrete were analyzed. The results showed that, after freezing and thawing, the crack-free specimens appeared flaking of surface and corner cutted. The phenomenon of radial propagation of pre-cracks and lateral initiation of transverse cracks appeared in pre-crack specimens. The loss rate of strength and modulus of elasticity of precast cracked concrete specimens were faster. The formulas for calculating peak stress and freeze-thaw cycles of pre-crack specimens were obtained. The cracks caused the concrete damage rate to be greater than that of the specimens without pre-crack.
- concrete with pre-crack,
- freeze-thaw damage,
- frost expansion of cracks,
- stress-strain relationship

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References

李金玉,曹建国,徐文雨,等.混凝土冻融破坏机理的研究[J].水利学报, 1999(1):42-50.

WITTMANN F H, WANG P, ZHANG P, et al. Capillary Absorption and Chloride Penetration into Neat and Water Repellent SHCC Under Imposed Strain[C]//2nd Int. RILEM Conf. on Strain Hardening Cementitious Composites, Rio de Janeiro. 2011(1):165-172.

CHENG Y, ZHANG Y, JIAO Y, et al. Quantitative Analysis of Concrete Property Under Effects of Crack, Freeze-Thaw and Carbonation[J]. Construction and Building Materials, 2016(129):106-115.

赵庆新,康佩佩.力学损伤对混凝土抗冻性的影响[J].建筑材料学报, 2013,16(2):326-329.

WARDEH G, GHORBEL E. Prediction of Fracture Parameters and Strain-Softening Behavior of Concrete:Effect of Frost Action[J]. Materials&Structures, 2015,48(1-2):123-138.

袭杰,刁波,沈孛,等.冻融与初始裂缝对钢筋混凝土黏结强度的影响[J].混凝土, 2014(7):16-19.

于孝民,任青文.冻融循环作用下普通混凝土断裂能试验[J].河海大学学报(自然科学版), 2010(1):80-82.

宁作君,巴恒静,杨英姿.冻融环境下混凝土的断裂损伤试验研究[J].哈尔滨工程大学学报, 2009,30(1):27-32.

陈有亮,刘明亮,蒋立浩.含宏观裂纹混凝土冻融的力学性能试验研究[J].土木工程学报, 2011,44(增刊2):230-233.

王靖荣,陈有亮,傅喻.冻融环境下不同预制裂缝混凝土断裂性能研究[J].水资源与水工程学报, 2019,30(2):178-185.

余建福.裂缝对混凝土耐久性的影响研究[D].天津:河北工业大学, 2015.

逯静洲,田立宗,童立强,等.经受疲劳荷载与冻融循环作用后混凝土动态性能研究[J].应用基础与工程科学学报, 2018(5):1055-1066.

田立宗,逯静洲,朱孔峰,等.冻融循环与疲劳荷载作用下混凝土损伤研究[J].长江科学院院报, 2018,35(2):140-144.

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