Author:
Zhao Wenhua,He Ruilin,Sun Qi,Gu Qi
Abstract
AbstractIn this study, the strength characteristics, deformation characteristics and damage characteristics of three kinds of specimens, namely, surrounding rock, cemented paste backfill (CPB) and a surrounding rock-CPB combination, were studied by uniaxial compression testing using rice husk ash and slag as cementing materials, and the mechanical properties of the combination specimens with different height ratios were also analyzed. The results showed that the surrounding rock specimens were the strongest, followed by the composite body, and the CPB was the weakest. The relationship between different height ratios of the assemblage and the cut line modulus was found according to the fitted curves. The CPB specimens and the surrounding rock specimens showed ductile damage, while the assemblage specimens showed brittle damage.
Funder
The National Natural Science Foundation of China
The Natural Science Foundation of Liaoning Province
The Scientific Research Fund of the Liaoning Provincial Education Department
The Discipline Innovation Team of Liaoning Technical University
Publisher
Springer Science and Business Media LLC