Applied Sciences, Volume (12), No (18), Year (2022-9) , Pages (9237-19)

Title : ( The Effect of the Petrography, Mineralogy, and Physical Properties of Limestone on Mode I Fracture Toughness under Dry and Saturated Conditions )

Authors: sajad safari farrokhad , Gholam Reza Lashkaripour , Nasser Hafezi Moghaddas , Saeed Aligholi , Mohanad Muayad Sabri Sabri ,

Citation: BibTeX | EndNote

Abstract

Determining the fracture toughness of rock materials is a challenging, costly, and time-consuming task, as fabricating a sharp crack in rock specimens will lead to failure of the specimen, and preparing specimens for determining the rock fracture toughness requires special equipment. In this paper, the relationship between mode I fracture toughness (KIC) with the rock index properties, mineralogy, and petrography of limestone is investigated using simple nonlinear and simple/multiple linear regression analyses to provide alternative methods for estimating the fracture toughness of limestones. The cracked chevron notched Brazilian disk (CCNBD) method was applied to 30 limestones with different petrographic and mineralogical characteristics under both dry and saturated conditions. Moreover, the index properties of the same rocks, including the density, porosity, electrical resistivity, P and S wave velocities, Schmidt rebound hardness, and point load index, were determined. According to the statistical analyses, a classification based on the petrography of the studied rocks was required for predicting the fracture toughness from index properties. By classifying the limestones based on petrography, reliable relationships with high correlations can be introduced for estimating the fracture toughness of different limestones using simple tests.

Keywords

Mode I fracture toughness; limestone; petrography; rock index properties
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@article{paperid:1091472,
author = {Safari Farrokhad, Sajad and Lashkaripour, Gholam Reza and Hafezi Moghaddas, Nasser and Saeed Aligholi and Mohanad Muayad Sabri Sabri},
title = {The Effect of the Petrography, Mineralogy, and Physical Properties of Limestone on Mode I Fracture Toughness under Dry and Saturated Conditions},
journal = {Applied Sciences},
year = {2022},
volume = {12},
number = {18},
month = {September},
issn = {2076-3417},
pages = {9237--19},
numpages = {-9218},
keywords = {Mode I fracture toughness; limestone; petrography; rock index properties},
}

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%0 Journal Article
%T The Effect of the Petrography, Mineralogy, and Physical Properties of Limestone on Mode I Fracture Toughness under Dry and Saturated Conditions
%A Safari Farrokhad, Sajad
%A Lashkaripour, Gholam Reza
%A Hafezi Moghaddas, Nasser
%A Saeed Aligholi
%A Mohanad Muayad Sabri Sabri
%J Applied Sciences
%@ 2076-3417
%D 2022

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