· The slake-durability index, which represents the degradability of rocks, is an important parameter to investigate the engineering behavior of weak and soluble rocks such as shales, clay-bearing rocks, limestones and travertines (Franklin and Chandra 1972; Onodera et al. 1974; Crosta 1998; Koncagul and Santi 1999; Gokceoglu et al. 2000; …

 · correlations between the uniaxial compressive strength and the corresponding values of the point load index. Two hundred rock cores were drilled and used for the uniaxial compressive strength and point load index tests. Results indicate the existence of two rock groups showing distinct behaviour in the context of this correlation.

 · basic properties of the soils; therefore it is possible to use these index properties to predict the compression index of the soil. The aim of this research is to know the relationship between physical properties and the mechanical properties of the soil. Physical properties refer to Atterberg limit test to determine Plasticity Index (PI).The

 · Soil index properties are properties which facilitate identification and classification of soils for engineering purposes. Plastic soils (clays) are normally described as cohesive as a distinction from non-plastic soils …

 · However, the existing correlations are empirical and based on comparison of the total classified values directly. That is because that RMR is quantified according to unconfined compression strength (UCS), rock quality designation (RQD), the spacing of discontinuity, and the condition of discontinuity and ground water.

 · Point load strengths have better correlations with unit weight than indirect tensile strengths. Unconfined compressive strength was correlated to index strength and weathering using three different approaches. For all approaches, indirect tensile strength has a better correlation with unconfined compressive strength than point load strength.

 · University of North Florida

 · The purpose of this study was to clarify the correlation between point load strength index and several physical properties in hydrothermally altered rocks, which are typical of the soft rocks found in northeastern …

 · Correlation between Index Properties and Swelling Characteristic of Expansive Soil (The case of Asella town) A Thesis Submitted to the School of Graduate Studies of Addis Ababa University in Partial fulfillment of the Requirement of the Degree of Master of Science in Civil Engineering (Geotechnical Engineering) Advisor: Tadesse (Dr.Ing)

BibTeX @MISC{Farah11correlationsbetween, author = {Raoaa Farah and Ra Schonning and Phd Apsl and Peter Btaza}, title = {CORRELATIONS BETWEEN INDEX PROPERTIES AND UNCONFINED COMPRESSIVE STRENGTH OF WEATHERED OCALA LIMESTONE}, year = {2011}}

CORRELATIONS BETWEEN INDEX PROPERTIES AND UNCONFINED COMPRESSIVE STRENGTH OF WEATHERED OCALA LIMESTONE . By Raoaa Farah, Ra Schonning, Phd Apsl and Peter Btaza. Abstract. This Master's Thesis is brought to you for free and open access by th

 · Unconfined compres-sion strength Direct measurement Table 1. Methods for determining the unconfined compression strength, [4] The Point Load Test (PLT) allows us to determine the Point Load Resistance Index or Point Load Strength, (I s(50)). It is useful in classifying rocks by their resistance. Ever since its emergence, Franklin and other ...

In 1982, Abdel-Rahman [2] has made a correlation between index properties and the engineering properties of Egyptian clay from different locations along the Nile valley and Delta. For this purpose, and intensive study was carried out …

 · DiVA portal

 · fCORRELATIONS BETWEEN INDEX PROPERTIES AND UNCONFINED COMPRESSIVE STRENGTH OF WEATHERED OCALA LIMESTONE by RaoaaFarah A …

 · Index properties, strength and compressibility parameters of undisturbed soil samples were determined in laboratory. A linear relation between unconfined compressive strength and SPT-N value was found for all soils, soft or stiff, low or high plasticity. Linear relation between compression index and SPT-N value was

 · This is to certify that the thesis entitled "Correlation between Index Properties with Shear Strength Parameters for Hawassa Soil" submitted in partial fulfillment of the requirements for the degree of Master's with specialization in Geotechnics, the Graduate Program of the School of Civil Engineering, and has been carried out by ...

Although correlations are commonly used in the preliminary stage of any project, it is reasonable to assign a unique strength to soils for their respective physical properties. Therefore, this study aims to establish a correlation between unconfined compressive strength and index properties of soils.

CORRELATIONS BETWEEN INDEX PROPERTIES AND UNCONFINED COMPRESSIVE STRENGTH OF WEATHERED OCALA LIMESTONE By Raoaa Farah, Ra Schonning, …

 · Considering all fractions, Spearman's rank correlation coefficient is 0.86. This result confirms that the region IV (soluble microbial by-product-like) is highly correlated with nitrogen-containing structures. Mesa TPIN fraction was obtained from an effluent in an activated sludge wastewater treatment plant.

 · The unconfined compression test is also one of them. Thus, there is a need to develop. models to quickly predict the unconfined compression strength of soils. The researchers. attempted to develop correlations to predict the unconfined compressive strength from. index properties of soils, which are easier and quicker to determine. This …

 · 1546201444 - Correlation between Unconfined Compression Strength (UCS) and Index Properties of Soil in Assiut Governorate, Egypt - Read online for free. Scribd is the world's largest social reading and publishing site.

 · between unconfined compressive strength and index properties of soil were drawn. Best possible prediction models were developed using a statistical approach. The developed predicting formulas were compared with obtained values from tests. It was found that there is very close between predicted values from prediction formulas and obtained

Corpus ID: 110008643; Correlations Between Index Properties and Unconfined Compressive Strength of Weathered Ocala Limestone …

 · The research presented in this paper was undertaken to generate statistical relationships between index properties that are relatively easy to measure and mechanical properties that are difficult to determine. These correlations may aid engineers to make preliminary estimates of the mechanical properties of shales. 2.

 · Regression analyses indicated that the relationships with correlation coefficients (R 2) from 0.55 to 0.98 exist between slake-durability index and engineering properties of the rocks. The best and poor correlations were obtained between slake-durability index and specific gravity and block punch index, respectively.

 · In this paper, in order to develop a new correlation between UCS and BTS, some laboratory tests on dry limestone specimens including 20 Unconfined Compression Tests (UCT) and 20 Brazilian Tests...

 · The purpose of this study was to determine the correlation between the PLS index and physical properties (density, water absorption, effective porosity, and elastic wave velocity) of hydrothermally altered …

 · related to point load index and indirect tension test [1-3], [10-12]. According Farah [1], indirect tensile strength has a better correlation with UCS then that of point load strength. He conducted a comprehensive study to obtain correlations between UCS and physical properties of weathered Ocala limestone.

Weathering has a negative effect on both physical and engineering properties of rock specimens and rock masses. When rock masses are weathered it is often difficult to …

Therefore, this study aims to establish a correlation between unconfined compressive strength and index properties of soils. In this work, undisturbed and disturbed soil samples were collected from fourteen test pits at 1.0 m and 2.0 m depths and from four test pits at a depth of 1.5m for a total of thirty-two sample specimens using purposive ...