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ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Solid Earth Geophysics
Volume 13 - 2025 | doi: 10.3389/feart.2025.1558854
This article is part of the Research Topic Advanced Materials and Technologies for Sustainable Development of Underground Resources View all 40 articles
Impact of rock content and fine-grained soil properties on the compressive deformation behavior of soil-rock mixtures
Provisionally accepted- Guangxi University, Nanning, China
Soil-rock mixtures are extensively used in geotechnical engineering applications, such as embankment construction, dam engineering, and slope reinforcement, where their compressive deformation characteristics play a crucial role in influencing the stability and settlement behavior of these structures. This study investigates how variations in rock content (W), effective stress (σv) and fine-grained soil properties (quartz sand and silty red clay) affect the one-dimensional compression behavior of soil-rock mixtures.Cc and the secondary compression index Ca, were obtained and analyzed through one-dimensional consolidation tests to assess the deformation characteristics of these mixtures. Results show that under the same effective stress (σv), both the Cc and Ca exhibit different trends with W, depending on the properties of the fine-grained soil. Soil-rock mixtures with silty red clay demonstrate more pronounced secondary consolidation effects at low rock content, whereas mixtures with quartz sand display weaker secondary consolidation overall. The significantly lower Ca/Cc values in the quartz sand mixtures suggest that secondary settlement is much smaller in these mixtures compared to those containing silty red clay.
Keywords: Soil-rock mixtures, Rock content, One-dimensional compression, Compression index, Secondary compression index
Received: 11 Jan 2025; Accepted: 20 Mar 2025.
Copyright: © 2025 Gong, Wang, Zhang, Xing, Deng, Long and Jiang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Mingjie Jiang, Guangxi University, Nanning, China
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