Effect of petrological characteristics on tensile strength of limestone using hydraulic fracturing tests

Sadeghi, Erfan; Nikudel, Mohammad Reza; Pahlavan, Badil

doi:10.1016/j.ijrmms.2018.01.033

Cited by 5 publications

(1 citation statement)

References 25 publications

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“…Geotechnical Testing Journal (Hobbs 1964), axial fracturing test (Dismuke, Chen, and Fang 1972;Kim et al 2012), bending test (Khan and Al-Shayea 2000;He, Cao, and Evans 1990), hydraulic fracturing test (Zoback et al 1977;Sadeghi, Nikudel, and Pahlavan 2018), and hoop test (Xu, De Freitas, and Clarke 1988).…”

Section: Introductionmentioning

confidence: 99%

A New Direct Tension Test Method for Soils and Soft Rocks

Guan

et al. 2020

Geotechnical Testing Journal

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Tensile strength plays a crucial role in many engineering activities involving soils and soft rocks.Currently, several methods for tensile strength determination exist, the most common of which include the direct tension method, Brazilian test, ring test, axial fracturing test, bending test, and hydraulic fracturing test. However, outstanding problems associated with these methods, e.g., undesirable eccentric forces and damage of specimen ends, significantly affect obtained tensile strength values. To overcome these problems, we propose an alternative direct tension test method together with the newly developed apparatus. The proposed method uses an annular specimen that is tension-loaded on the inner hole. The method was evaluated through a series of tests on undisturbed soil and remolded gypsum-sand mixture specimens. For validation, comparison of results between the proposed method and the International Society for Rock Mechanics (ISRM)-suggested method was performed. Based on the results of the experimental program, the proposed method is considered more capable of and more suitable for determining the tensile strength of soils and soft rocks than the ISRM-suggested method.

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