基于Weibull分布的煤矸石对混凝土断裂损伤特性的影响

李永靖; 程耀辉; 文成章; 胡硕; 尚昀郅; 宋洋

doi:10.11988/ckyyb.20221336

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长江科学院院报 ›› 2024, Vol. 41 ›› Issue (3) : 134-141. DOI: 10.11988/ckyyb.20221336

水工结构与材料

基于Weibull分布的煤矸石对混凝土断裂损伤特性的影响

李永靖^1,2,3, 程耀辉¹, 文成章¹, 胡硕¹, 尚昀郅¹, 宋洋⁴

作者信息 +

Revealing the Impact of Coal Gangue on Fracture Damage Characteristics of Concrete Based on Weibull Distribution

LI Yong-jing^1,2,3, CHENG Yao-hui¹, WEN Cheng-zhang¹, HU Shuo¹, SHANG Yun-zhi¹, SONG Yang⁴

Author information +

文章历史 +

摘要

为探索煤矸石质量取代率、粉煤灰质量取代率、水灰比对I型裂缝煤矸石混凝土荷载-裂缝张开位移、荷载-跨中挠度曲线、断裂韧性、断裂能的影响规律,对I型裂缝煤矸石混凝土进行三点弯曲试验,将所得结果结合损伤力学及Weibull分布函数建立煤矸石混凝土的断裂损伤本构模型。结果表明:煤矸石质量取代率对预制I型裂缝的煤矸石混凝土断裂性能影响最大,粉煤灰质量取代率对其断裂韧度影响较大,水灰比对其断裂能影响较大;提升煤矸石混凝土断裂时断裂韧度及断裂能的最佳组合的煤矸石质量取代率为25%、粉煤灰质量取代率为10%、水灰比为0.5;经对比可知,所得损伤本构模型对应的应力-应变曲线与试验曲线高度吻合。研究成果为煤矸石混凝土的制备及工程实际应用研究提供了参考。

Abstract

Three-point bending tests were conducted on coal gangue concrete with I-shaped fractures. The aim was to investigate the impacts of coal gangue mass replacement rate, fly ash mass replacement rate, and water-cement ratio on load-crack opening displacement curve, load-midspan deflection curve, fracture toughness, and fracture energy. The obtained results were utilized in association with damage mechanics and the Weibull distribution function to establish the fracture damage constitutive model of coal gangue concrete. The findings indicate that the coal gangue mass replacement rate exerts the most significant influence on the fracture performance of coal gangue concrete with prefabricated I-type cracks, while fly ash mass replacement rate has a greater impact on the fracture toughness, and the water-cement ratio exhibits a greater influence on fracture energy. The optimal combination for enhancing the fracture toughness and fracture energy of coal gangue concrete is determined as follows: 25% coal gangue mass replacement rate, 10% fly ash mass replacement rate, and 0.5 water cement ratio. Upon comparison, the stress-strain curve derived from the constitutive model aligns closely with the test curve. These findings offer valuable insights for the formulation and practical application of gangue concrete.

导出引用

李永靖, 程耀辉, 文成章, 胡硕, 尚昀郅, 宋洋. 基于Weibull分布的煤矸石对混凝土断裂损伤特性的影响[J]. 长江科学院院报. 2024, 41(3): 134-141 https://doi.org/10.11988/ckyyb.20221336

LI Yong-jing, CHENG Yao-hui, WEN Cheng-zhang, HU Shuo, SHANG Yun-zhi, SONG Yang. Revealing the Impact of Coal Gangue on Fracture Damage Characteristics of Concrete Based on Weibull Distribution[J]. Journal of Changjiang River Scientific Research Institute. 2024, 41(3): 134-141 https://doi.org/10.11988/ckyyb.20221336

中图分类号： TU52

参考文献

[1] 孔德顺, 蒋荣立. 六盘水煤矸石酸浸渣制备NaP分子筛[J]. 非金属矿, 2021, 44(1): 13-15.(KONG De-shun, JIANG Rong-li. Preparation of NaP Molecular Sieve from Acid Leaching Residue of Coal Gangue in Liupanshui[J]. Non-Metallic Mines, 2021, 44(1): 13-15.(in Chinese))
[2] QIU J, ZHANG R, GUAN X,et al. Deterioration Characteristics of Coal Gangue Concrete under the Combined Action of Cyclic Loading and Freeze-thaw Cycles[J]. Journal of Building Engineering, 2022, 60: 105165.
[3] 刘瀚卿,白国良, 王建文, 等. 煤矸石混凝土单轴受压应力-应变曲线试验研究[J]. 建筑结构学报, 2023, 44(7): 236-245, 254.(LIU Han-qing, BAI Guo-liang, WANG Jian-wen, et al. Experimental Study on Stress-strain Curve of Coal Gangue Concrete under Uniaxial Compression[J]. Journal of Building Structures, 2023, 44(7): 236-245, 254.(in Chinese))
[4] 白国良,刘瀚卿,刘辉,等.煤矸石理化特性与煤矸石混凝土力学性能研究[J].建筑结构学报,2022,44(10):243-254.(BAI Guo-liang, LIU Han-qing, LIU Hui, et al.Study on Physicochenical Properties of Coal Gangue and Mechanical Properties of Coal Gangue Concrete[J].Journal of Building Structures,2022,44(10):243-254.(in Chinese))
[5] 乔立冬,姚占全,王宗熙,等.煤矸石对混凝土宏微观性能的灰熵分析[J].排灌机械工程学报,2022,40(1):30-34,54.(QIAO Li-dong,YAO Zhan-quan,WANG Zong-xi,et al.Grey Entropy Analysis of Coal Gangue on Macro and Micro Properties of Concrete[J]. Journal of Drainage and Irrigation Machinery Engineering,2022,40(1):30-34,54.(in Chinese))
[6] 王庆贺,李喆,周梅,等.自燃煤矸石骨料取代率对煤矸石混凝土梁受弯性能的影响[J].建筑结构学报,2020,41(12):64-74.(WANG Qing-he,LI Zhe,ZHOU Mei,et al. Effects of Spontaneous-combustion Coal Gangue Aggregate (SCGA) Replacement Ratio on Flexural Behavior of SCGA Concrete Beams[J]. Journal of Building Structures,2020,41(12):64-74.(in Chinese))
[7] 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 Xiao, QIU Ji-sheng, DAI Jun, 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))
[8] 杨秋宁,景严谊,张东生.纤维及矿物掺合料对煤矸石混凝土力学性能的改性研究[J].功能材料,2022,53(7):7150-7156.(YANG Qiu-ning,JING Yan-yi,ZHANG Dong-sheng.Studyon Modification of Mechanical Properties of Coal Gangue Concrete with Fiber and Mineral Admixture[J]. Journal of Functional Materials,2022,53(7):7150-7156.(in Chinese))
[9] 李文龙.掺玻璃纤维粉煤灰煤矸石骨料混凝土强度与抗裂性能试验研究[J].建筑结构,2020,50(13):49-53.(LI Wen-long.Experimental Study on Strength and Crack Resistance of Coal Gangue Aggregate Concrete Mixed with Glass Fiber and Fly Ash[J].Building Structure,2020,50(13):49-53.(in Chinese))
[10] 杨尚谕, 周梅, 张玉琢, 等. 自燃煤矸石粗集料取代率对混凝土断裂韧性的影响[J]. 建筑材料学报, 2020, 23(4): 858-864.(YANG Shang-yu, ZHOU Mei, ZHANG Yu-zhuo, et al. Effect of Spontaneous Combustion Coal Gangue Coarse Aggregate Replacement Ratio on Fracture Properties of Three-point Bending Concrete Beam[J]. Journal of Building Materials, 2020, 23(4): 858-864.(in Chinese))
[11] 李永靖,潘铖, 张淑坤, 等. 煅烧煤矸石混凝土徐变性能正交试验研究[J]. 非金属矿, 2019, 42(3): 40-43.(LI Yong-jing, PAN Cheng, ZHANG Shu-kun, et al. Orthogonal Test Study on Creep Performance of Calcination Coal Gangue Concrete[J]. Non-Metallic Mines, 2019, 42(3): 40-43.(in Chinese))
[12] 徐世烺,张秀芳,郑爽.小骨料混凝土双K断裂参数的试验测定[J].水利学报,2006,37(5):543-553.(XU Shi-lang,ZHANG Xiu-fang,ZHENG Shuang. Experimental Measurement of Double-K Fracture Parameters of Concrete with Small Size Aggregate[J]. Journal of Hydraulic Engineering,2006,37(5):543-553.(in Chinese))
[13] 韩菊红,李明轩,杨孝青,等.混杂钢纤维二级配混凝土断裂性能试验研究[J].土木工程学报,2020,53(9):31-40.(HAN Ju-hong,LI Ming-xuan,YANG Xiao-qing,et al. Experimental Study on Fracture Behavior of Hybrid Steel Fiber Reinforced Two-grade Aggregate Concrete[J]. China Civil Engineering Journal,2020,53(9):31-40.(in Chinese))
[14] 潘铖. 煤矸石混凝土弹塑性本构模型及损伤断裂机理研究[D]. 阜新: 辽宁工程技术大学, 2021.(PAN Cheng. Research on Elastoplastic Constitutive Model and Damage and Fracture Mechanism of Coal Gangue Concrete[D]. Fuxin: Liaoning Technical University, 2021.(in Chinese))
[15] 潘青松,彭刚, 胡伟华, 等. Weibull统计理论的参数对混凝土全曲线模型的影响[J]. 长江科学院院报, 2015, 32(4): 120-124.(PAN Qing-song, PENG Gang, HU Wei-hua, et al. Application of Weibull Statistical Theory in Concrete’s Parameter Curve Model[J]. Journal of Yangtze River Scientific Research Institute, 2015, 32(4): 120-124.(in Chinese))[16] 时金娜,赵燕茹,郝松,等.基于DIC技术的高温后混凝土变形性能[J]. 建筑材料学报,2019,22(4):584-591.(SHI Jin-na,ZHAO Yan-ru,HAO Song,et al. Deformation Behavior of Concrete under Uniaxial Compression after High Temperature by DIC Technology[J]. Journal of Building Materials,2019,22(4):584-591.(in Chinese))
[17] 李明,王浩然,赵唯坚.单向带抗剪键叠合板的受力性能试验[J].吉林大学学报(工学版),2020,50(2): 654-667.(LI Ming, WANG Hao-ran, ZHAO Wei-jian. Experimental of Loading-bearing Capacity of One-way Laminated Slab with Shear Keys[J]. Journal of Jilin University (Engineering and Technology Edition), 2020, 50(2): 654-667.(in Chinese))
[18] 刘洁, 周婷, 熊珍珍, 等. 装配式墩头锚固预制楼板力学性能研究[J]. 天津大学学报(自然科学与工程技术版), 2018, 51(增刊1): 103-109.(LIU Jie, ZHOU Ting, XIONG Zhen-zhen, et al. Mechanical Properties of Prefabricated Assembly Slab with Anchorage of Pier Head[J]. Journal of Tianjin University (Science and Technology), 2018, 51(Sup.1): 103-109.(in Chinese))