%0 Journal Article
%T Multicriteria decision-making analysis based methodology for predicting carbonate rocks' uniaxial compressive strength
%A Ersoy Hakan
%A Kanik Derya
%J Earth Sciences Research Journal
%D 2012
%I Universidad Nacional de Colombia
%X ABSTRACT Uniaxial compressive strength (UCS) deals with materials' to ability to withstand axially-directed pushing forces and especially considered to be rock materials' most important mechanical properties. However, the UCS test is an expensive, very time-consuming test to perform in the laboratory and requires high-quality core samples having regular geometry. Empirical equations were thus proposed for predicting UCS as a function of rocks' index properties. Analytical hierarchy process and multiple regression analysis based methodology were used (as opposed to traditional linear regression methods) on data-sets obtained from carbonate rocks in NE Turkey. Limestone samples ranging from Devonian to late Cretaceous ages were chosen; travertine-onyx samples were selected from morphological environments considering their surface environmental conditions Test results from experiments carried out on about 250 carbonate rock samples were used in deriving the model. While the hierarchy model focused on determining the most important index properties affecting on UCS, regression analysis established meaningful relationships between UCS and index properties; 0. 85 and 0. 83 positive coefficient correlations between the variables were determined by regression analysis. The methodology provided an appropriate alternative to quantitative estimation of UCS and avoided the need for tedious and time consuming laboratory testing RESUMEN La resistencia a la compresi車n uniaxial (RCU) trata con la capacidad de los materiales para soportar fuerzas empujantes dirigidas axialmente y, especialmente, es considerada ser uno de las m芍s importantes propiedades mec芍nicas de los materiales rocosos. Sin embargo, una prueba de RCU es costosa, lleva mucho tiempo para hacerlo en el laboratorio y requiere muestras de n迆cleos de alta calidad que tienen una geometr赤a regular. Por lo tanto, ecuaciones emp赤ricas fueron propuestas para la predicci車n de RCU como una funci車n de las propiedades 赤ndice de las rocas. Las metodolog赤as de proceso anal赤tico jer芍rquico (PAJ) y an芍lisis de regresi車n m迆ltiple fueron utilizados (en vez de los m谷todos tradicionales de regresi車n lineal) en conjuntos de datos obtenidos de las rocas carbonatadas en el noreste de Turqu赤a Muestras de rocas calizas que van desde el Dev車nico hasta finales del Cret芍cico fueron escogidas; muestras de travertino y 車nix fueron seleccionadas de ambientes morfol車gicos teniendo en cuenta sus condiciones ambientales de superficie. Los resultados de los experimentos llevados a cabo en alrededor de 250 muestras de rocas carbonatadas fue
%K Compressive strength
%K empirical equations
%K carbonate rock
%K analytical hierarchy.
%U http://www.revistas.unal.edu.co/index.php/esrj/article/view/33850