Static and Dynamic Mechanical Properties of Coral Aggregate Seawater Concrete and Their Numerical Simulation

被引：0

作者：

Ma H. ^{[1
]}

Yu H. ^{[1
]}

Guo J. ^{[1
]}

Mei Q. ^{[2
]}

Liu T. ^{[1
]}

机构：

[1] College of Civil Aviation, Nanjing University of Aeronautic and Astronautic, Nanjing

[2] School of Civil Engineering, Sanjiang University, Nanjing

来源：

Jianzhu Cailiao Xuebao/Journal of Building Materials | 2023年 / 26卷 / 11期

关键词：

coral aggregate seawater concrete（CASC）; dynamic mechanical property; numerical simulation; quasi‑static mechanical property; strain rate effect;

D O I：

10.3969/j.issn.1007-9629.2023.11.003

中图分类号：

学科分类号：

摘要：

The static and dynamic mechanical properties，intrusion resistance and explosive performance of coral aggregate seawater concrete（CASC）before and after high temperature，and their numerical simulation of a three‑dimensional random aggregate mesoscopic model were studied. The results show that the addition of sisal fibers can effectively improve the brittleness of CASC. The residual compressive strength of CASC increases and then decreases as the temperature increases. A two‑part equation describing the stress‑strain relationship of CASC after high temperature was proposed；the static and dynamic mechanical properties of CASC after high temperature are significantly reduced，and the higher the temperature，the more obvious the high temperature weakening effect. A three‑dimensional random aggregate mesoscopic model was established for CASC，and the numerical simulation results are in good agreement with the experimental results. © 2023 Tongji University. All rights reserved.

引用

页码：1158 / 1165

页数：7

共 24 条

[1] DA Bo, Study on preparation technology， durability and mechanical properties of components of high strength whole coral seawater concrete［D］, (2017)
[2] LIU Ting, Study on static and dynamic mechanical properties of coral seawater concrete after high temperature［D］, (2021)
[3] GUO Jianbo, Study on static and dynamic mechanical properties of basic magnesium sulfate cement coral concrete after high temperature［D］, (2021)
[4] YUE C J, MA H Y，, Et al., Uniaxial compression of sisal fiber reinforcing coral concrete［J］, ACI Materials Journal, 117, 5, (2020)
[5] YU Hongfa, DA Bo, MA Haiyan, Et al., Mechanical properties and durability of coral seawater concrete and its beam‑column members［J］, Journal of Building Materials, 22, 6, (2019)
[6] GUO J B, MA H Y，, Et al., Damage and deterioration characteristics of basic magnesium sulfate cement coral aggregate concrete exposed to elevated temperature［J］, Engineering Failure Analysis, 137, (2022)
[7] DA Bo, YU Hongfa, MA Haiyan, Et al., Experimental study on full stress‑strain curve of coral seawater concrete under uniaxial compression［J］, Journal of Building Structures, 38, 1, (2017)
[8] SU Chen, MA Haiyan, YU Hongfa, Et al., Effects of different coral aggregates on mechanical properties of coral concrete［J］, Journal of the Chinese Ceramic Society, 48, 11, (2020)
[9] YUE Chengjun, YU Hongfa, MA Haiyan, Et al., Experimental study and numerical simulation on impact compression performance of coral seawater concrete［J］, Journal of Building Materials, 24, 2, (2021)
[10] YUE Chengjun, Experimental research and numerical simulation of high speed impact mechanical properties of coral concrete, (2019)

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