Soil-rock mixture (SRM) in cold region is affected by frequent freeze-thaw cycles, resulting in the frequent discontinuously reorganized soil-rock skeleton and the strength deterioration. At present, studies on the SRMs mainly focus on the micro-pore changes and macro-mechanical properties under different rock contents, water content and freeze-thaw cycles. However, the analysis of strength degradation mechanism from a combined perspective (water migration, micro-damage evolution and macro-physical and mechanical properties) remains unclear. Therefore, this paper reviews the water migration, the micro-pore evolution, and the macro mechanical properties response of SRMs. Based on the theory of water migration, the evolution mechanism and law of water migration of SRM are described in detail considering the factors such as temperature gradients, water content and fine particle contents. The micro-pore test methods and the evolution law of micro-pore of SRM under freeze-thaw cycles, rock contents and water content were systematically evaluated. The test methods of macroscopic mechanical properties of SRM and the effects of freeze-thaw cycles, rock contents and water content on the shear strength and its indexes of SRM are compared and analyzed. The strength degradation mechanism of SRM is revealed by combining macro-meso evolution and multi-fields coupling. Based on the strength degradation mechanism, the future research work is prospected, providing a theoretical guidance for the construction of SRM projects and disaster prevention and control in cold regions.<\/p>\n
Biography:<\/strong><\/p>\n Prof. Liyun Tang has completed his PhD from Xi\u2019an University of Science and Technology. She is the dean of School of Architecture and Civil Engineering, Xi ‘an University of Science and Technology. She is a recipient of the National High-level Talent Program of China. Her research interests lie primarily in cold region engineering, with a focus on repair techniques, the development of green low-carbon functional materials, and disaster monitoring, prediction, and mitigation in cold regions. She has published over 140 papers, hold 22 authorized patents and authored 4 academic monographs.<\/p>\n","protected":false},"featured_media":5211,"template":"","meta":{"_acf_changed":false},"schedule":[5],"speaker-category":[6],"class_list":["post-5212","speaker","type-speaker","status-publish","has-post-thumbnail","hentry","schedule-day-1","speaker-category-speakers"],"acf":[],"yoast_head":"\n