What is it about?
A dynamic-disturbance triaxial testing system for frozen rock specimens was developed in the CUMTB rock mechanics laboratory to characterize the evolution process of the instantaneous and long-term mechanical properties of frozen rock specimens under conventional and dynamic loading, with special attention to the deformation characteristics of rock under subzero temperature, dynamic disturbance and a three-dimensional (3D) pressure state.
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Why is it important?
A series of conventional triaxial compression tests and triaxial loading creep tests of rock specimens under subzero temperatures and disturbance environments has been carried out. The obtained results, such as instantaneous deformation and time-dependent feature of frozen soft rock on complex condition, show that the capabilities of our system can be verified reasonably.
Read the Original
This page is a summary of: Development and Application of a New Triaxial Testing System for Subzero Rocks, Geotechnical Testing Journal, December 2020, ASTM International, DOI: 10.1520/gtj20200054.
You can read the full text:
Study on the mechanical properties and damage constitutive model of frozen weakly cemented red sandstone
1. The mineral composition and microstructural characteristics of frozen red sandstone were obtained. 2. A series of triaxial compression tests were conducted on frozen red sandstone. 3. The strength, deformation and failure modes of frozen red sandstone were studied. • A new constitutive model based on statistical damage theory is proposed.
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