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Information Journal Paper

Title

Comparative evaluation of Schmidt hammer test procedures for prediction of rock strength

Pages

  199-206

Abstract

 Uniaxial compressive and Brazilian tensile strengths (UCS and BTS) of rocks are considered as the most important properties in the design of most geotechnical projects, such as slope stability and underground excavation, which interact with rocks. Measuring UCS and BTS using standard laboratory tests is time consuming, tedious and expensive. Moreover, it requires a large number of well-prepared rock cores that is not often viable, particularly in soft or highly jointed rock masses. For these reasons, indirect tests such as Schmidt hammer hardness (SH) can be used for prediction of UCS and BTS of rocks. There is a wide variation in the recommended SH test procedures by institutions and researchers. The objective of this study is to evaluate the performance of SH testing procedures for prediction of UCS and BTS of rocks. Accordingly, 22 sandstone samples from Qum Province, Central Iran, were selected and their UCS, BTS and SH values were determined. Using data analysis, the Correlation equations have been developed between UCS and BTS with SH. A t– test was performed to check the validity of the Correlation equations. The results showed that the SH test procedures that are based on continuous impacts at a point reveal lower values than those based on single impacts. Further, it was found that SH test procedures have different performance for prediction of UCS and BTS of rocks.

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    APA: Copy

    JAMSHIDI, AMIN, Yazarloo, Rasool, & Gheiji, Sahar. (2018). Comparative evaluation of Schmidt hammer test procedures for prediction of rock strength. INTERNATIONAL JOURNAL OF MINING AND GEO-ENGINEERING, 52(2), 199-206. SID. https://sid.ir/paper/330016/en

    Vancouver: Copy

    JAMSHIDI AMIN, Yazarloo Rasool, Gheiji Sahar. Comparative evaluation of Schmidt hammer test procedures for prediction of rock strength. INTERNATIONAL JOURNAL OF MINING AND GEO-ENGINEERING[Internet]. 2018;52(2):199-206. Available from: https://sid.ir/paper/330016/en

    IEEE: Copy

    AMIN JAMSHIDI, Rasool Yazarloo, and Sahar Gheiji, “Comparative evaluation of Schmidt hammer test procedures for prediction of rock strength,” INTERNATIONAL JOURNAL OF MINING AND GEO-ENGINEERING, vol. 52, no. 2, pp. 199–206, 2018, [Online]. Available: https://sid.ir/paper/330016/en

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