| Issue |
E3S Web Conf.
Volume 439, 2023
2023 8th International Conference on Ecological Building and Green Building Material (EBGBM 2023)
|
|
|---|---|---|
| Article Number | 02006 | |
| Number of page(s) | 6 | |
| Section | Green Building Material and Material Property Research | |
| DOI | https://doi.org/10.1051/e3sconf/202343902006 | |
| Published online | 27 October 2023 | |
Study on mechanical properties of metakaolin based geopolymer pervious concrete
1 State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi’an, 710048, China
2 Gansu Diantou Hexi Hydropower Development Co., Ltd. Gansu, 730030, P R. China
3 Gansu Electric Power Company Economic Technology Research Institute, Lanzhou, 730030, P R. China
a Corresponding author: luoyipingxy@163.com
b* Corresponding author: 409787589@qq.com
c Corresponding author: xue18919916116@163.com
In this study, geopolymers were used as binder materials and large-sized aggregates as coarse aggregates to prepare pervious concrete. Design different alkali activator modulus, concentration, and coarse aggregate: geopolymer binder materials in mass, and test the physical, and mechanical properties. According to the compression test, the stress-strain curve of the metakaolin-based polymer pervious concrete was obtained, and the elastic modulus and strain were analyzed. The test results show that: with the increase of the modulus of the alkali activator, the compressive strength and splitting tensile strength show a trend of increasing first and then decreasing. The higher alkali activator concentration and the ratio of the crude aggregate to the polymer binder material are detrimental to the development of strength in pervious concrete. The mass ratio of geopolymer binder material to coarse aggregate is 1: 5, the concentration of alkaline activator is 40%, the modulus is 1.3, and the mass ratio of alkali activator solute (sodium silicate+sodium hydroxide) to metakaolin is the geopolymer pervious concrete prepared at 0.35 has higher strength and water permeability.
© The Authors, published by EDP Sciences, 2023
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