Presenting detailed information on strength, deformation, and degradation aspects of fresh and recycled ballast under monotonic, cyclic and impact loading using innovative geotechnical testing devices. A constitutive model for ballast incorporating particle breakage is presented representing a more realistic stress-strain response.

This book contains accepted papers submitted and peer-reviewed for the 25thAnnual Symposium organised by the Sydney Chapter of the Australian Geomechanics Society (AGS). The objective is to bring together the key stakeholders of the Australian geological and geotechnical community. It showcases state-of-the-art practices, new research findings, and case histories that demonstrate geotechnical advances and challenges in building and transport infrastructure. It focuses on geotechnical aspects of smart solutions and improvements in geotechnical approaches for transport infrastructure projects,...