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Characterisation of strength and deformation characteristics of alkali-activated rice husk ash filler-assemblage perimeter rock
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Characterisation of strength and deformation characteristics of alkali-activated rice husk ash filler-assemblage perimeter rock
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Journal Article
Characterisation of strength and deformation characteristics of alkali-activated rice husk ash filler-assemblage perimeter rock
2023
Overview
In 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.
