Mechanical Properties of High-early-strength High-ductility Concrete for Rapid Repair
YANG Jiasheng1, DENG Mingke1,*, ZHANG Yangxi1, ZHANG Min1, FAN Hongkan2
1 School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China 2 Xi'an Wuhe New Civil Engineering Material Co., Ltd., Xi'an 710055, China
Abstract: Based on the application background of pavement repair, the mechanical properties of low fiber content and high-early-strength high-ductility concrete (HES-HDC) including compressive, flexural, uniaxial tensile, and four-point bending behaviors were investigated. The effect of different roughness grades on the interfacial shear strength between HES-HDC and existing concrete was also considered. In addition, the abrasion resistance and impermeability of HES-HDC were measured and compared with normal concrete. The results show that the compressive strength, flexural strength, and bending tensile strength of HES-HDC at 2 h curing age reach 29 MPa, 8 MPa, and 13 MPa, respectively, meeting the requirements of traffic opening. Under tensile and bending loads, the test curves of HES-HDC exhibit strain-hardening characteristics, with a 28-day tensile strain of 2.63% and an elastic modulus of approximately 19.9 GPa. Compared with PVA fiber-reinforced HES-HDC beams, the initial bending toughness ratio and residual bending toughness ratio of PE fiber-reinforced HES-HDC beams increase by 15.2% and 2.0% at 2 h curing age, respectively, and by 88.3% and 1.1% at 24 h curing age, respectively. The interfacial shear strength between HES-HDC and concrete increases significantly with the increase of age and roughness grades. Even if HES-HDC is bonded to concrete with a smooth surface, the interfacial shear strength at 2 h curing age could still reach 1.25 MPa, satisfying the need of rapid repair. The HES-HDC has comparative abrasion resistance to normal concrete, and which complies with the specifications for high-speed, first-class highway pavement concrete. Specially, its permeability is much higher than that of normal concrete.
1 Du T L, Peng P, Liu Y. Highway Engineering, 2020, 45(3), 4 (in Chinese). 杜天玲, 彭鹏, 刘英. 公路工程, 2020, 45(3), 4. 2 Qian S Z, Li V C, Zhang H, et al. Cement and Concrete Composites, 2013, 35(1), 78. 3 Yang J S, Deng M K, Zhang Y X, et al. Archives of Civil and Mechanical Engineering, 2024, 24(1), 36. 4 Venkiteela G, Klein M, Najm H, et al. International Journal of Concrete Structures and Materials, 2017, 11(3), 435. 5 Wang S X, Li V C. ACI Materials Journal, 2006, 103(2), 97. 6 Li M, Li V C. ACI Materials Journal, 2011, 108(1), 3. 7 Deng H W. Advances in Materials Science and Engineering, 2018, 2018(1), 8159869. 8 Li V C. Restoration of Buildings and Monuments, 2004, 10(2), 163. 9 Li V C. Engineered cementitious composites (ECC):bendable concrete for sustainable and resilient infrastructure, Springer, 2019. 10 Huang B T, Li Q H, Xu S L, et al. Engineering Structures, 2019, 199, 109576. 11 Kunieda M, Rokugo K. Journal of Advanced Concrete Technology, 2006, 4(1), 19. 12 Shoji D, Ogwezi B, Li V C. Construction and Building Materials, 2022, 349, 128710. 13 Lepech M, Li V C. Materials and Structures, 2009, 42(9), 1185. 14 Li V C, Lepech M. In:Transportation research board 83rd annual meeting, Compendium of Papers CD ROM, Washington, D. C. , 2004, pp. 4. 15 Ma H, Qian S Z, Zhang Z G. Construction and Building Materials, 2014, 68, 92. 16 Sahmaran M, Al-Emam M, Yildirim G, et al. Materials and Structures, 2013, 48(5), 1389. 17 Yang J S, Deng M K, Zhang Q Q, et al. Journal of Hunan University (Natural Sciences), 2024, 51(3), 130 (in Chinese). 杨家盛, 邓明科, 张晴晴, 等. 湖南大学学报(自然科学版), 2024 51(3), 130. 18 Yokota H, Rokugo K, Sakata N. High performance fiber reinforced cement composites. Springer Tokyo, Japan, 2008, 2, 761. 19 Tian J, Wu X W, Zheng Y, et al. Construction and Building Materials, 2019, 223, 12. 20 Tian J, Wu X W, Zheng Y, et al. Construction and Building Materials, 2019, 226, 238. 21 Shang X Y, Xu F Z, Yu J T, et al. Journal of Building Engineering, 2021, 44, 103328. 22 Zhang J, Wang Z B, Ju X C. Composites Part B:Engineering, 2013, 50, 224. 23 Yang J S, Deng M K, Wang Y, et al. Journal of Building Engineering, 2024, 89, 109332. 24 Liang L, Zhang X, Liu Q L. Materials Reports, 2023, 37(5), 21070107 (in Chinese). 梁龙, 张鑫, 刘巧玲. 材料导报, 2023, 37(5), 21070107. 25 Guo L P, Chen B, Sun W, et al, Journal of Building Structures, 2018, 39(7), 169 (in Chinese). 郭丽萍, 陈波, 孙伟, 等. 建筑结构学报, 2018, 39(7), 169.
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2025, Vol. 39 
