Dynamic increase factors of rock strength

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13 Citations (Scopus)


Understanding dynamic mechanical response of rocks subjected to extreme loadings is necessary in rock engineering analysis and design. The dynamic increase factor (DIF), is usually defined as the ratio of the dynamic strength to the quasi-static strength in uniaxial compression or tension, which has been widely accepted as an important parameter to measure rate sensitivity of brittle materials. This paper summarizes the features of rate dependency of rocks and systematically reviews the expressions for the relationship between strain rates and mechanical strength of geo-materials. In addition, based on a number of experimental results, an aggregated DIF for compressive and tensile strength of rocks is proposed, which can provide a good prediction of rock strength over a wide range of strain rates.

Original languageEnglish
Title of host publicationRock Dynamics – Experiments, Theories and Applications - Proceedings of the 3rd International Conference on Rock Dynamics and Applications, ROCDYN-3 2018
EditorsXing Li, Charlie C. Li, Zong-Xian Zhang
PublisherCRC Press
Number of pages6
ISBN (Print)9780815396673
Publication statusPublished - 1 Jan 2018
EventInternational Conference on Rock Dynamics and Applications (RocDyn) 2018 - Trondheim, Norway
Duration: 25 Jun 201829 Jun 2018
Conference number: 3rd


ConferenceInternational Conference on Rock Dynamics and Applications (RocDyn) 2018
Abbreviated titleRocDyn 2018

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