Research on Wet-Chemical Deformation of Roadbed Built with Weathered Stone

Abstract:

Based on analyses on mineral composition, mechanical property and hydrology property, large-scale triaxial shear test and vibration test were used to study the effect on strength and deformation characteristic, which was caused by wet-chemical and soften of the fillings. Then trial roadbed was filled with 3 typical rocks. Modulus of resilience on the top of the roadbed was gotten via a larger-diameter (D=75 cm) plate loading test which could provide important parameter for pavement structure design. Wet-chemical deformation is researched under constant load amount to deadweight of the roadbed. Experiment results show : (1)single-axle compressive strength (>15 MPa) and modulus of resilience (E0=91.7 MPa) of 3 fillings match the requirement according to specification; (2) these 3 rocks can be used as filling in roadbed; (3) as the fillings have wet-chemical, soften, and expansion properties, the suggestion of damp-proofing and drainage works should be adopted in construction.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 3695-3699
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.3695
• Online since: November 2011
• Authors: Chao Qun Hou, Xiao Mou Wang, Ling Yun Yang
• Keywords: Large-Scale Vibration Test, Modulus of Resilience, Rock-Filled Roadbed, Soaked Loading Test, Wet-Chemical Deformation

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