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A rational approach to lect the number of field tests required to determine subgrade properties 期刊名称： International Journal of Pavement Engineering
专四真题
作者： Chakraborty, Sayantan,Bheematti, Tejo V.,Puppala, Anand J.,Nazarian, Soheil
提高英语口语年份： 2019年
关键词： Field tests;material variability;subgrade property;Coefficient of
superdomeVariation (CoV);regression analysis
摘要：This paper prents a rational approach to answer the questions of how many field tests need to be performed at a test site to determine its subgrade strength properties, and what inferences can be drawn from limited number of field tests. MATLAB simulations were performed to generate various data ts that corresponded to site variability, with the coefficient of variation (CoV) ranging from 10 to 80%. Studies were performed bad on coefficient of variation (CoV) and regression analysis. This study provides two important charts for evaluating subgrade properties at test sites: (1) to determine the num
amy whitehou>super womanber of field tests to be performed, after which there would not be any significant change in the inferences drawn from the test results; (2) inferences pertaining to subgrade soil property of a field test site, bad on a limited
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