Abstract: In order to determine the performance change of epoxy grouting materials for concrete micro cracks under extreme environmental conditions,four kinds of epoxy grouting materials (EP, EP/AD-Ⅰ, EP/AD-Ⅱ and EP/AD-Ⅲ) were prepared by using epoxy resin E-54, polyether amine D230 curing agent and three active diluents (AD-Ⅰ, AD-Ⅱ and AD-Ⅲ). The impact strength was used as the evaluation index to compare and analyze the flexibility of four kinds of epoxy grouting materials at room temperature and low temperature. Based on the tensile properties and interfacial bond strength of epoxy grouting materials, the evolution law of mechanical properties of different grouting materials under high temperature impact, temperature change and freeze-thaw cycles was explored. The results show that compared with pure epoxy grouting material, the reactive diluent weakens the low temperature flexibility, high temperature impact resistance, temperature denaturation resistance and frost resistance of epoxy grouting materials. Among them, AD-Ⅲ active diluent has the best effect on improving the toughness of epoxy grouting material at room temperature, but its impact toughness at -10 ℃ is 31.4% lower than that of pure epoxy grouting material. After high temperature impact, tempe-rature change treatment and freeze-thaw cycle, the tensile properties and bond strength of four kinds of epoxy grouting materials have different degrees of decline. Under high temperature impact, the bond strength of the four kinds of epoxy grouting materials lost greatly, with a decrease of 14.67%, but the bond strength was still higher than 2.5 MPa. During temperature change conditions, the bond strength of epoxy grouting materials decreases by 3.5%. The tensile properties of epoxy grouting materials are significantly affected by freeze-thaw cycles, but the tensile strength is still greater than 40 MPa, and the elongation at break is still higher than 4.0%.
[1] Editorial Department of China Journal of Highway and Transport. China Journal of Highway and Transport, 2020, 33(10), 1(in Chinese). 《中国公路学报》编辑部. 中国公路学报, 2020, 33(10), 1. [2] Wang C H, Shu C, Han B, et al. Journal of Chang'an University (Na-tural Science Edition), 2020, 40(1), 1(in Chinese). 王朝辉, 舒诚, 韩冰, 等. 长安大学学报(自然科学版), 2020, 40(1), 1. [3] Chen Q, Wang C H, Fu H, et al. Materials Reports, 2021, 35(16), 16712(in Chinese). 陈谦, 王朝辉, 傅豪, 等. 材料导报, 2021, 35(16), 16172. [4] Chi Y, Yin J. Journal of Railway Science and Engineering, 2018, 15(9), 2327(in Chinese). 池漪, 尹健. 铁道科学与工程学报, 2018, 15(9), 2327. [5] Xiao X D. Study on preparation and properties of grouting material with low viscosity for the micro cracks of the cast-in-situ concrete of pavement on deck bridge. Master's Thesis, Chang' an University, China, 2020(in Chinese). 肖绪荡. 现浇混凝土桥面铺装细微裂缝低粘灌浆材料制备及性能研究. 硕士学位论文, 长安大学, 2020. [6] Ozeren O E, Ozkul M H.Construction and Building Materials, 2018, 158,369. [7] Petrova T V, Solodilov V I, Kabantseva V E,et al. In: TMU Internatio-nal Symposium on New Quantum Phases Emerging from Novel Crystal Structure. Tokyo, Japan, 2019, pp.012070. [8] Khalina M, Beheshty M H, Salimi A. Polymer Bulletin, 2019, 76(8), 3905. [9] Li Y, Deng J F, Yu S Y, et al.Polymer Bulletin, 2019 (11), 33(in Chinese). 李瑜, 邓金飞, 喻世轶, 等. 高分子通报, 2019 (11), 33. [10] Ye S. China Adhesives, 2017, 26 (4), 37(in Chinese). 叶晟. 中国胶粘剂, 2017, 26(4), 37. [11] Bai T, Guo A R, Li R J, et al.Chinese Journal of Applied Chemistry, 2016, 33 (12), 1401(in Chinese). 白天, 郭安儒, 李瑞杰, 等. 应用化学, 2016, 33(12), 1401. [12] Cui H S, Wu Y Z, Meng J H.China Plastics Industry, 2015, 43 (6), 57(in Chinese). 崔宏生, 吴有智, 孟军虎. 塑料工业, 2015, 43(6), 57. [13] Peng B, Yu Y B, Shan Y M, et al.Journal of Hunan University (Natural Sciences), 2013, 40(9), 25(in Chinese). 彭勃, 余益斌, 单远铭, 等. 湖南大学学报(自然科学版), 2013, 40(9), 25. [14] Vanerek J, Smak M, Kusak I, et al.Materiali in Tehnologije, 2017, 51(6), 889. [15] Yamazaki D, Iwanami M, Isa M.Journal of Advanced Concrete Technology, 2020, 18(8), 463. [16] Zhang P, Hu Y, Pang Y Y, et al.Construction and Building Materials, 2020, 259, 119799. [17] Chen Q, Wang S S, Wang C H, et al.Journal of Materials in Civil Engineering, 2021,33(5),04021079. [18] Chen Q, Wang C H, Fu H, et al. China Journal of Highway and Transport, 2021, 34(7), 236(in Chinese). 陈谦, 王朝辉, 傅豪, 等. 中国公路学报, 2021, 34(7), 236. [19] Gao Z D, Hong B, Gao J Y, et al.Thermosetting Resin, 2018, 33(6), 47(in Chinese). 高振东, 洪彬, 高建业, 等. 热固性树脂, 2018, 33(6), 47. [20] Xu Q B, Gao Y. Journal of China & Foreign Highway, 2008 (4), 49(in Chinese). 徐邱彬, 高英. 中外公路, 2008 (4), 49. [21] Ma Z J, Tan Z M, Qian C.China Journal of Highway and Transport, 2014, 27 (9), 9(in Chinese). 马正军, 谈至明, 钱晨. 中国公路学报, 2014, 27(4),9. [22] Chen Q, Wang C H, Fan Z T, et al. Materials Reports B:Research Papers, 2019, 33(5), 1659(in Chinese). 陈谦, 王朝辉, 樊振通, 等. 材料导报:研究篇, 2019, 33(5), 1659.
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2022, Vol. 36 
