FraMCoS 7 2010 Jeju, South Korea

Investigation on time dependent fracture mechanism of mortar based on meso scale numerical approach

To investigate time-dependent fracture mechanism of mortar, discrete numerical analysis by Rigid Body Spring Model (RBSM) was conducted. Four-Components Combined Model and Pseudo Mono- tonic Loading developed by authors were used for constitutive law and for determining failure state, respec-…

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Year 2010
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Abstract

To investigate time-dependent fracture mechanism of mortar, discrete numerical analysis by Rigid Body Spring Model (RBSM) was conducted. Four-Components Combined Model and Pseudo Mono- tonic Loading developed by authors were used for constitutive law and for determining failure state, respec- tively. The analysis could express reasonable results in terms of strength, stiffness and global stress-strain re- lationship observed in macro level. This study focuses on behavior in meso level as well. Through an investigation on stress-strain-time response of connected springs, fracture process of mortar under creep load- ing was examined. As a result, fracture mechanism, in which stress redistribution caused due to stress relaxa- tion in uncracked portion leads new cracks to be formed, was determined.