Constitutive model for soft rocks considering structural healing and decay. (November 2017)

• Record Type: Journal Article
• Authors: Kikumoto, Mamoru; Nguyen, Vu Pham Quang; Yasuhara, Hideaki; Kishida, Kiyoshi
• Is Part Of: Computers and geotechnics. Volume 91(2017)
• Page Start: 93
• Page End: 103
• Publication Date: 2017-11
• Subjects: Soft rock -- Rock structure -- Slide-hold-slide triaxial test -- Healing -- Decay -- Critical state theory; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2017.07.003
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: The behavior of soft rock depends on the contact area between mineral particles and the tensile strength of the interparticle cementation, which are usually referred to as structures. We investigated the effects of structural decay and healing on the behavior of soft rock through monotonic and slide-hold-slide triaxial tests under the drained condition with constant effective confining pressure. We developed a constitutive model for soft rocks incorporating structural healing and decay in the context of the extended critical state theory. The model was validated via laboratory tests and captured the behavior of soft rock, including the healing and decay phenomena.