Open AccessA Comparison Between Schmidt Rebound Hammer Test and Point Load Index Test (IS50) for the Effectiveness in Estimating the Unconfined Compressive Strength of Intact Rock- A Case Study with respect to Limestone of Early Eocene Nammal Formation, Central Salt
Author(s) -
Aun Zahoor,
Muhammad Usman Azhar,
Saif Ur Rehman,
Farrukh Rahim Shehzad
Publication year - 2019
Publication title -
international journal of economic and environment geology
Language(s) - English
Resource type - Journals
ISSN - 2223-957X
DOI - 10.46660/ojs.v10i2.283
Subject(s) - schmidt hammer , compressive strength , mathematics , geotechnical engineering , statistics , load testing , test (biology) , structural engineering , geology , engineering , materials science , composite material , paleontology
In a bid to find some possible relation of Unconfined Compressive Strength (UCS) with relatively simplelaboratory tests like Point Load Test (PLT) and Schmidt Rebound Hammer Test (SRHT), some 50 core samples ofMiddle Eocene Nammal formation from Central Salt Range in Pakistan were collected and subjected to these testmethods as per respective test standards of International Society of Rock Mechanics (ISRM). The values of SRHT andPLT were separately compared to the respective values of UCS so as to find the linear relations. On the basis of the R2value of Regression Analysis, it has been found that a strong correlation with a high degree of accuracy exists betweenPLT and UCS while the degree of accuracy between SRHT and UCS was found to be low.