基于复合盐溶液浓度的再生骨料混凝土抗冻性能试验研究

曹芙波; 黄旭彤; 杨晓刚; 梁卫国; 吴亚轩; 李名远; 苏天; 王晨霞

doi:10.11988/ckyyb.20221709

PDF(7319 KB)

长江科学院院报 ›› 2024, Vol. 41 ›› Issue (5) : 187-194. DOI: 10.11988/ckyyb.20221709

水工结构与材料

基于复合盐溶液浓度的再生骨料混凝土抗冻性能试验研究

曹芙波¹, 黄旭彤¹, 杨晓刚², 梁卫国³, 吴亚轩², 李名远², 苏天⁴, 王晨霞¹

作者信息 +

Frost Resistance of Recycled Aggregate Concrete Based on Compound Salt Solution Concentration

CAO Fu-bo¹, HUANG Xu-tong¹, YANG Xiao-gang², LIANG Wei-guo³, WU Ya-xuan², LI Ming-yuan², SU Tian⁴, WANG Chen-xia¹

Author information +

文章历史 +

摘要

为探究不同浓度复合盐溶液对再生骨料混凝土(Recycled Aggregate Concrete,RAC)抗冻性影响,以复合盐浓度、强度等级和冻融循环次数为变量,对RAC进行冻融循环试验,并分析其表观损伤程度、质量损失率、劈裂抗拉损失率、立方体抗压强度损失率和相对动弹性模量损失率。结果表明:RAC的强度等级越高,抵抗盐冻破坏能力越强;30次盐冻循环后,RAC的质量损失率、抗压强度损失率、劈裂抗拉损失率和相对动弹性模量损失率均随复合盐溶液浓度提高而减小;90次盐冻循环后,RAC的盐冻损伤则随复合盐溶液浓度提高而增大。以复合盐浓度和强度等级为参数建立了指数函数盐冻损伤模型和Weibull分布函数盐冻损伤模型。对比后发现Weibull分布函数盐冻损伤模型衍生的生存函数图和失效率函数图能更直观地反映盐冻损伤程度及损伤效率,且模型与其他学者试验结果均吻合良好。

Abstract

In the aim of assessing the impact of different compound salt solution concentrations on the frost resistance of recycled aggregate concrete (RAC), we conducted freeze-thaw cycle tests on RAC samples by varying the concentration of the compound salt solution, the strength grades, and the number of freeze-thaw cycles. We scrutinized apparent damage, mass loss rate, splitting tensile strength loss rate, cubic compressive strength loss rate, and relative dynamic elastic modulus loss rate. Our findings reveal that higher strength grades correlate with better salt-frost resistance in RAC. After 30 cycles, mass loss, compressive strength and splitting and tensile strength loss, as well as relative dynamic elastic modulus loss decrease with increasing concentration of compound salt solution. However, after 90 cycles, salt-frost damage escalates with rising solution concentration. We established exponential function and Weibull distribution salt-frost damage models for RAC in consideration of the solution concentration and strength grades. Comparison manifests that the survival function graph and failure rate fuction rendered from Weibull distribution model better describe the salt frost damage level and efficiency. Moreover, the Weibull distribution model result aligns well with experimental results from other scholars.

导出引用

曹芙波, 黄旭彤, 杨晓刚, 梁卫国, 吴亚轩, 李名远, 苏天, 王晨霞. 基于复合盐溶液浓度的再生骨料混凝土抗冻性能试验研究[J]. 长江科学院院报. 2024, 41(5): 187-194 https://doi.org/10.11988/ckyyb.20221709

CAO Fu-bo, HUANG Xu-tong, YANG Xiao-gang, LIANG Wei-guo, WU Ya-xuan, LI Ming-yuan, SU Tian, WANG Chen-xia. Frost Resistance of Recycled Aggregate Concrete Based on Compound Salt Solution Concentration[J]. Journal of Changjiang River Scientific Research Institute. 2024, 41(5): 187-194 https://doi.org/10.11988/ckyyb.20221709

中图分类号： TU502

参考文献

[1] XU F, WANG S, LI T, et al. The Mechanical Properties and Resistance Against the Coupled Deterioration of Sulfate Attack and Freeze-thaw Cycles of Tailing Recycled Aggregate Concrete[J]. Construction and Building Materials, 2021, 269: 121273.
[2] SU T, WU J, YANG G, et al. Bond Behavior between Recycled Coarse Aggregate Concrete and Steel Bar after Salt-frost Cycles[J]. Construction and Building Materials, 2019, 226: 673-685.
[3] ZHU P, HAO Y, LIU H, et al. Durability Evaluation of Recycled Aggregate Concrete in a Complex Environment[J]. Journal of Cleaner Production, 2020, 273: 122569.
[4] XIAO Q H, LI Q, CAO Z Y, et al. The Deterioration Law of Recycled Concrete under the Combined Effects of Freeze-thaw and Sulfate Attack[J]. Construction and Building Materials, 2019, 200: 344-355.
[5] HU J, WU J. Mechanical Properties and Uni-axial Compression Stress-strain Relation of Recycled Coarse Aggregate Concrete Subjected to Salt-frost Cycles[J]. Construction and Building Materials, 2019, 197: 652-666.
[6] CWIRZEN A, PENTTALA V. Aggregate-Cement Paste Transition Zone Properties Affecting the Salt-Frost Damage of High-performance Concretes[J]. Cement and Concrete Research, 2005, 35(4): 671-679.
[7] SEZ DEL BOSQUE I F, VAN DEN HEEDE P, DE BELIE N, et al. Freeze-thaw Resistance of Concrete Containing Mixed Aggregate and Construction and Demolition Waste-additioned Cement in Water and De-icing Salts[J]. Construction and Building Materials, 2020, 259: 119772.
[8] YU Y, LI B, ZHANG Y, et al. Deterioration Characteristics of Recycled Aggregate Concrete Subjected to Coupling Effect with Salt and Frost[J]. Reviews on Advanced Materials Science, 2022, 61(1): 27-40.
[9] HAO L, LIU Y, XIAO J. Durability of Recycled Aggregate Thermal Insulation Concrete under Combined Flexural Loading and Freeze-Thaw Cycles[J]. Construction and Building Materials, 2021, 272: 121652.
[10]KAZMI S M S, MUNIR M J, WUY F, et al. Effect of Different Aggregate Treatment Techniques on the Freeze-thaw and Sulfate Resistance of Recycled Aggregate Concrete[J]. Cold Regions Science and Technology, 2020, 178: 103126.
[11]LEI B, LI W, TANG Z, et al. Durability of Recycled Aggregate Concrete under Coupling Mechanical Loading and Freeze-thaw Cycle in Salt-solution[J]. Construction and Building Materials, 2018, 163: 840-849.
[12]王晨霞,郭磊,曹芙波.盐碱与冻融耦合作用下再生混凝土耐久性试验研究[J].硅酸盐通报,2018,37(1):10-16.(WANG Chen-xia, GUO Lei, CAO Fu-bo. Recycled Concrete Corrosion in Saline and Freeze-thaw Cycle Coupling under the Action of Durability Research[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(1): 10-16.(in Chinese))
[13]钟楚珩,龙宇华,周金枝,等.再生混凝土疲劳可靠度及疲劳寿命预测[J].工业建筑,2022,52(4):140-145,83.(ZHONG Chu-heng,LONG Yu-hua,ZHOU Jin-zhi,et al. Research on Fatigue Reliability and Fatigue Life Prediction of Recycled Aggregate Concrete[J]. Industrial Construction,2022,52(4):140-145,83.(in Chinese))
[14]刘普,王明华,李庆涛.高温后路缘石再生骨料混凝土的力学性能[J].建筑材料学报,2022,25(12):1233-1240.(LIU Pu, WANG Ming-hua, LI Qing-tao. Mechanical Properties of Curb Recycled Aggregate Concrete after High Temperature[J]. Journal of Building Materials, 2022, 25(12): 1233-1240.(in Chinese))
[15]樊金承. 复合盐及单盐冻融循环侵蚀下混凝土受风沙环境冲蚀试验研究[D]. 呼和浩特: 内蒙古工业大学, 2016. (FAN Jin-cheng. Experimental Study on Concrete under Wind-blown Sand Environment after Mixed and Single Salt Freezing and Thawing Cycles[D].Hohhot: Inner Mongolia University of Technology, 2016. (in Chinese))
[16]WU J, JING X, WANG Z. Uni-axial Compressive Stress-strain Relation of Recycled Coarse Aggregate Concrete after Freezing and Thawing Cycles[J]. Construction and Building Materials, 2017, 134: 210-219.
[17]赵燕茹, 刘芳芳, 王磊, 等. 基于孔结构的单面冻后混凝土抗压强度模型研究[J]. 建筑材料学报, 2020, 23(6): 1328-1336, 1344. (ZHAO Yan-ru, LIU Fang-fang, WANG Lei, et al. Modeling of Compressive Strength of Concrete Based on Pore Structure under Single-side Freeze-thaw Condition[J]. Journal of Building Materials, 2020, 23(6): 1328-1336, 1344.(in Chinese))
[18]杨全兵.混凝土盐冻破坏机理(Ⅱ): 冻融饱水度和结冰压[J].建筑材料学报,2012,15(6):741-746.(YANG Quan-bing. One of Mechanisms on the Deicer-frost Scaling of Concrete(Ⅱ): Degree of Saturation and Ice-formation Pressure during Freezing-Thawing Cycles[J]. Journal of Building Materials,2012,15(6):741-746.(in Chinese))
[19]周静海, 何海进, 孟宪宏, 等. 再生混凝土基本力学性能试验[J]. 沈阳建筑大学学报(自然科学版), 2010, 26(3): 464-468. (ZHOU Jing-hai, HE Hai-jin, MENG Xian-hong, et al. Basic Mechanical Properties of Recycled Concrete Experimental Study[J]. Journal of Shenyang Jianzhu University (Natural Science), 2010, 26(3): 464-468.(in Chinese))
[20]孙晓雪, 赵吉坤, 张晓敏. 再生混凝土力学性能试验研究[J]. 低温建筑技术, 2012, 34(2): 11-13. (SUN Xiao-xue, ZHAO Ji-kun, ZHANG Xiao-min. Study of Mechanical Properties of Recycled Concrete[J]. Low Temperature Architecture Technology, 2012, 34(2): 11-13.(in Chinese))
[21]王占锋, 王社良, 翁光远. 不同粗骨料取代率再生混凝土力学性能试验研究[J]. 郑州大学学报(工学版), 2012, 33(4): 32-35. (WANG Zhan-feng, WANG She-liang, WENG Guang-yuan. Experimental Study on Mechanical Properties of Concrete Prepared with Different Recycled Coarse Aggregates Replacement Rate[J]. Journal of Zhengzhou University (Engineering Science), 2012, 33(4): 32-35.(in Chinese))
[22]LIU Y, CHEN Y F, WANG W, et al. Bond Performance of Thermal Insulation Concrete under Freeze-Thaw Cycles[J]. Construction and Building Materials, 2016, 104: 116-125.
[23]董瑞鑫, 申向东, 薛慧君, 等. 干湿循环与风沙吹蚀作用下风积沙混凝土的抗硫酸盐耐久性[J]. 材料导报, 2020, 34(20): 20053-20060. (DONG Rui-xin, SHEN Xiang-dong, XUE Hui-jun, et al. Sulfate Durability of Aeolian Sand Concrete under Dry-wet Cycles and Sand Blowing[J]. Materials Reports, 2020, 34(20): 20053-20060.(in Chinese))
[24]刘崇熙, 汪在芹. 坝工混凝土耐久寿命的衰变规律[J]. 长江科学院院报, 2000, 17(2): 18-21. (LIU Chong-xi, WANG Zai-qin. On Decay Rules of Durable Life of Dam Concrete[J]. Journal of Yangtze River Scientific Research Institute, 2000, 17(2): 18-21.(in Chinese))
[25]张梦培. 再生混凝土高浓度复合盐冻后抗冻性及轴心受压试验研究[D]. 包头: 内蒙古科技大学, 2021. (ZHANG Meng-pei. Experimental Study on Frost Resistance and Axial Compression of Recycled Concrete after High Concentration Compound Salt Freezing[D].Baotou: Inner Mongolia University of Science & Technology, 2021. (in Chinese))
[26]刘路. 盐冻循环作用下再生混凝土力学性能与微观结构研究[D]. 包头: 内蒙古科技大学, 2020. (LIU Lu. Study on Mechanical Properties Concrete and Microstructure of Recycled under Salt-freeze Cycle[D].Baotou: Inner Mongolia University of Science & Technology, 2020. (in Chinese))
[27]DONG W, SHEN X D, XUE H J, et al. Research on the Freeze-thaw Cyclic Test and Damage Model of Aeolian Sand Lightweight Aggregate Concrete[J]. Construction and Building Materials, 2016, 123: 792-799.
[28]姚韦靖, 刘宜思, 庞建勇, 等. 硫酸盐侵蚀下掺稻壳灰混凝土的劣化性能及损伤模型[J]. 复合材料学报, 2022, 39(10): 4813-4823. (YAO Wei-jing, LIU Yi-si, PANG Jian-yong, et al. Performance Degradation and Damage Model of Concrete Incorporating Rice Husk Ash under Sulfate Attack[J]. Acta Materiae Compositae Sinica, 2022, 39(10): 4813-4823.(in Chinese))