The effects of moisture, temperature and uniaxial pressure on Schmidt rebound hardness value of rocks

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ATAPOUR HADI; Akbari Mohamad Reza; torkshavand mehdi

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Journal: JOURNAL OF ENGINEERING GEOLOGY Year:2016 | Volume:10 | Issue:3 Page(s): 3649-3666

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Title

The effects of moisture, temperature and uniaxial pressure on Schmidt rebound hardness value of rocks

Author(s)

ATAPOUR HADI | Akbari Mohamad Reza | torkshavand mehdi | Issue Writer Certificate

Keywords

Schmidt rebound hardnessQ1

water contentQ1

temperatureQ1

uniaxial compressive stressQ1

Abstract

The Schmidt hammer provides a quick and inexpensive measure of surface hardness that is widely used for estimating the mechanical properties of rock material such as uniaxial compressive strength and Young’ s modulus. On the other hand, Schmidt rebound hardness can be used for a variety of specific applications. In the mining industries, it is used to determine the quality of rock, which is common practice when constructing rock structures such as those found in long wall mining, room and pillar mining, open-pit mining, gate roadways, tunnels, dams, etc. However, a number of issues such as specimen dimensions, water content, hammer type, surface roughness, weathering, testing, data reduction and analysis procedures continue to influence the consistency and reliability of the Schmidt hammer test results. This paper presents: a) a critical review of these basic issues and b) avaluate the effect of temperature, moisture and uniaxial compressive stress on Schmidt hammer hardness. It was found that water content has a significant effect on the Schmidt rebound hardness (SRH) of rocks. So that increase of water content substantially reduced the SRH of samples. temperature also had a considerable influence on the SRH. However, relationship between SRH decreases with increasing temperature for tested samples were linear. Also tests results showed that uniaxial loading of samples increases the SRH values.

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APA: Copy

ATAPOUR, HADI, Akbari, Mohamad Reza, & torkshavand, mehdi. (2016). The effects of moisture, temperature and uniaxial pressure on Schmidt rebound hardness value of rocks. JOURNAL OF ENGINEERING GEOLOGY, 10(3 ), 3649-3666. SID. https://sid.ir/paper/186358/en

Vancouver: Copy

ATAPOUR HADI, Akbari Mohamad Reza, torkshavand mehdi. The effects of moisture, temperature and uniaxial pressure on Schmidt rebound hardness value of rocks. JOURNAL OF ENGINEERING GEOLOGY[Internet]. 2016;10(3 ):3649-3666. Available from: https://sid.ir/paper/186358/en

IEEE: Copy

HADI ATAPOUR, Mohamad Reza Akbari, and mehdi torkshavand, “The effects of moisture, temperature and uniaxial pressure on Schmidt rebound hardness value of rocks,” JOURNAL OF ENGINEERING GEOLOGY, vol. 10, no. 3 , pp. 3649–3666, 2016, [Online]. Available: https://sid.ir/paper/186358/en

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