THE EFFECT OF WATER CONTENT ON THE MECHANICAL BEHAVIOUR OF FINE-GRAINED SEDIMENTARY ROCKS

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LASHKARIPOUR GH.R.; AJAL LOUEIAN R.

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Journal: RESEARCH JOURNAL OF UNIVERSITY OF ISFAHAN "SCIENCE" Year:2000 | Volume:13 | Issue:1 Page(s): 12-20

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Title

THE EFFECT OF WATER CONTENT ON THE MECHANICAL BEHAVIOUR OF FINE-GRAINED SEDIMENTARY ROCKS

Author(s)

LASHKARIPOUR GH.R. | AJAL LOUEIAN R. | Issue Writer Certificate

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Abstract

To investigate the effect of water content on the mechanical behavior of fine-grained sedimentary rocks three different types of shales; clayshale, mudshale and mudstone,from different locations were studied. The samples were tested at different water content conditions ranging from oven-dried to saturated condition. Preparing samples of standard size for testing was a troublesome task. Many samples break during coring, cutting, grinding and storing because of disintegration of these rocks when subjected to change in water content. This nondurable behavior of these rocks is responsible for numerous slope instability problems, underground excavation problems and embankment failures.Water content has been demonstrated to have a marked influence on the strength and deformation properties. The uniaxial compressive strength and modulus of elasticity decrease significantly as the water content increases. The results show a reduction of more than 90% in uniaxial compressive strength from oven-dried to saturated condition. This strength reduction due to moisture content for the rocks studied is significantly higher than the values reported by other researchers. A general equation was developed for this type of fine-grained sedimentary rocks that may be used for predicting uniaxial compressive strength from the available information on water content.The modulus of elasticity was found to be influenced by anisotropy, but the most significant influence, regarding reduction of the modulus of elasticity, was the change from dry to saturated condition. Test results show a significant reduction in the static modulus of elasticity from oven-dried condition to saturated condition. The results of these tests show an average reduction in modulus of elasticity, from that in dry state, of about 84% for the shales studied.

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APA: Copy

LASHKARIPOUR, GH.R., & AJAL LOUEIAN, R.. (2000). THE EFFECT OF WATER CONTENT ON THE MECHANICAL BEHAVIOUR OF FINE-GRAINED SEDIMENTARY ROCKS. RESEARCH JOURNAL OF UNIVERSITY OF ISFAHAN "SCIENCE", 13(1), 12-20. SID. https://sid.ir/paper/55973/en

Vancouver: Copy

LASHKARIPOUR GH.R., AJAL LOUEIAN R.. THE EFFECT OF WATER CONTENT ON THE MECHANICAL BEHAVIOUR OF FINE-GRAINED SEDIMENTARY ROCKS. RESEARCH JOURNAL OF UNIVERSITY OF ISFAHAN "SCIENCE"[Internet]. 2000;13(1):12-20. Available from: https://sid.ir/paper/55973/en

IEEE: Copy

GH.R. LASHKARIPOUR, and R. AJAL LOUEIAN, “THE EFFECT OF WATER CONTENT ON THE MECHANICAL BEHAVIOUR OF FINE-GRAINED SEDIMENTARY ROCKS,” RESEARCH JOURNAL OF UNIVERSITY OF ISFAHAN "SCIENCE", vol. 13, no. 1, pp. 12–20, 2000, [Online]. Available: https://sid.ir/paper/55973/en

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