GEOTECHNICAL STUDY FOR NEW EGYPTIAN CAPITAL ROCKS

Authors

  • Mohamed Saad Eldin Mohamed
  • Mohamed Ahmed Saeed
  • Nasser Ahmed Abdelgawad Radwan2

Keywords:

Engineering Properties of Rock, Empirical Relations, Unconfined Compressive Strength Schmidt Hammer, Water Absorption, Porosity

Abstract

A laboratory study was conducted to develop a database and models for predicting of
unconfined compressive strength of rocks in the new administrative capital of Egypt. In this respect, the
present study presents correlation equations between the unconfined compressive strength and some
mechanical and physical properties of rocks. More than 249 of specimens are prepared and tested; the tests
were conducted on four rock types, including basalt, limestone, sandstone, and siltstone. Based on results
obtained from the following mechanical and physical tests that were performed on rock samples, unconfined
compressive strength, Schmidt hammer, and Brazilian splitting test, they were conducted to determine the
mechanical properties of rock specimens, water absorption, and porosity. They were conducted to determine
the physical properties of rock specimens. The results of this study indicated that the correlation between
unconfined compression strength and the Schmidt hammer test increases as the rock strength. The
relationship is found in a polynomial equation. It has been found that the strong linear correlation between
unconfined compression strength and Brazilian splitting test for the tested rocks. From this study, it has been
found that there is an inverse relationship between the unconfined compression strength and water absorption.
This relation is a power equation. It has been found from the present study that the unconfined compression
strength increases as the porosity in the rock decreases. The relation is found to be a polynomial equation.
The correlation coefficient (R2
) varies between 0.5 and 0.95 in all relations.

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Published

2020-01-27

How to Cite

Mohamed Saad Eldin Mohamed, Mohamed Ahmed Saeed, & Nasser Ahmed Abdelgawad Radwan2. (2020). GEOTECHNICAL STUDY FOR NEW EGYPTIAN CAPITAL ROCKS . GEOMATE Journal, 18(65), 15–22. Retrieved from https://geomatejournal.com/geomate/article/view/337

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