| Issue |
E3S Web Conf.
Volume 233, 2021
2020 2nd International Academic Exchange Conference on Science and Technology Innovation (IAECST 2020)
|
|
|---|---|---|
| Article Number | 01011 | |
| Number of page(s) | 5 | |
| Section | NESEE2020-New Energy Science and Environmental Engineering | |
| DOI | https://doi.org/10.1051/e3sconf/202123301011 | |
| Published online | 27 January 2021 | |
Mechanical Properties and Micro Structure of Cement Concrete in Freeze-Thaw Environment
1 Shandong Hi-speed Construction Management Group Co., Ltd, Jinan, Shandong, 250014, China
2 Research Institute of Highway Ministory of Transport, Beijing, Beijing, 100088, China
3 Beijing Xinqiao Technology Development Co., Ltd, Beijing, Beijing, 100088, China
* Corresponding author’s e-mail: 15801308270@163.com
In order to find the declay law of mechanical property and the performance difference after salty water and fresh water freeze-thaw cycle, freeze-thaw cycle environments under the salty water and fresh water are simulated. The compressive strength, dynamic elastic modulus and the mass lost are tested. The pore structure parameters are also tested by MIP. Plot the pore diameter distribution curve. The result shows that the compressive strength and dynamic elastic modulus are all decreased. The degree of these two properties decreasing under salty water freeze and thaw recycle is more than the one under fresh water. The parameters of porosity and critical pore diameter become larger. The amount of pores whose diameter is between 100nm and 1000nm increase. The amount of pores whose diameter is under 100nm decrease. The deteriorate degree of pore structure is deeper in salty water than in fresh water.
© The Authors, published by EDP Sciences 2021
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