Abstract
The construction waste slag mixed with certain proportion of clay has been used as filling material, which has significant social economy and environmental protection benefits. In order to reveal the compaction properties of the slag-clay mixture, a series of compaction tests are conducted to investigate the influence of the slag content and its initial gradation on the behavior and particle breakage. The results show that the optimum water content for slag-clay mixture is smaller than that for clay, and the maximum dry density for slag-clay mixture is larger than that for clay. As the slag content increases, the optimum water content for the slag-clay mixture increases, and the maximum dry density increases firstly and then decreases. It was found that the optimum slag content is 30% in the slag-clay mixture despite the different initial gradation of slag. The maximum dry density is greater for slag with larger particle size, which leads to well compaction of wide-graded slag-clay mixture. The compaction properties of slag-clay mixture are explained by linking the structural response of slag-clay mixtures with the slag content and behavior of particle breakage.
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Acknowledgement
The work presented in this paper is supported by National Key Research and Development Program (Grant no. 2016YFC0800204), National Natural Science Foundation of China (Grant no. 41772283) and the Fundamental Research Funds for the Central Universities. These supports are gratefully acknowledged.
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Hu, C., Zhang, J., Gu, X., Xu, K. (2018). The Compaction Properties of Construction Waste Slag-Clay Mixtures. In: Shi, X., Liu, Z., Liu, J. (eds) Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0011-0_46
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DOI: https://doi.org/10.1007/978-981-13-0011-0_46
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