E3S Web Conf.
Volume 341, 20222022 7th International Conference on Green Materials and Environmental Engineering (GMEE2022)
|Number of page(s)
|31 January 2022
Performance of cement stabilized recycled aggregate base course added with metakaolin
1 Suzhou Transport Investment Planning Design and Management Co., Ltd., 215000, China
2 School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
3 Road Engineering Research Center, Suzhou University of Science and Technology, 215000, China
* Corresponding author: firstname.lastname@example.org
In order to better use the old cement concrete pavement materials in the cement stabilized base of the reconstruction or new road. In this paper, metakaolin was used to replace recycled fine aggregate with different proportions to prepare cement stabilized recycled aggregate base mixture, and the physical and mechanical properties and dry shrinkage properties of cement stabilized recycled aggregate base mixture were studied. The results of the study show that adding a proper amount of metakaolin can reduce the optimal water content of the mixture, increases the maximum dry density and 7d unconfined compressive strength of the mixture, and also reduces the total water loss and dry shrinkage of the mixture. The research results can provide new ideas for the recycling of road waste materials.
Key words: Metakaolin / Recycled aggregate / Strength / Dry shrinkage
© The Authors, published by EDP Sciences, 2022
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