Tests were conducted on base course and subgrade materials at Kirtland AFB, Albuquerque, N. Mex., Sewart AFB, Nashville, Tenn., and Craig AFB, Selma, Ala., located in different climatic regions, to determine the variation in moisture content with time, and the movement and source of moisture beneath airfield pavements. The variation in moisture content with time (all elevations) followed no prescribed pattern of increase or decrease. The 18-in. depth in the subgrade was the only elevation to produce a trend of higher moisture content in the high rainfall zone. The variation (movement) of moisture content across the pavement width was insignificant in the base course and inconsistent for the two elevations in the subgrade. In-place moisture contents varied directly with the soil's plastic limit, liquid limit, plasticity index, optimum moisture content, and percentage of material passing the No. 200 sieve. The variation in moisture content could not be directly related to rainfall zone or climatic region, nor was the source of the moisture definitely determined for the areas tested. (Author).

This book contains the best peer-reviewed papers accepted for presentation at the 2nd Springer Conference of the Arabian Journal of Geosciences (CAJG-2), organized in Sousse, Tunisia, in November 2019. The short papers cover various topics from the fields of (1) geological and geotechnical engineering, (2) geomechanical studies based on numerical and analytical methods, and (3) geo-informatics and remote sensing. The content of these papers provides new scientific knowledge for further understanding on landslides, new stabilization techniques, importance of geophysics for engineering geology investigations as well as new empirical approaches for easily predicting some physical and hydrogeomechanical properties of geomaterials. The book is of interest to all researchers, practitioners, and students in the fields of geological and mining engineering, geotechnical engineering, hydrogeomechanics, engineering geology, geotechnologies, and natural hazards.

This book presents a one-stop reference to the empirical correlations used extensively in geotechnical engineering. Empirical correlations play a key role in geotechnical engineering designs and analysis. Laboratory and in situ testing of soils can add significant cost to a civil engineering project. By using appropriate empirical correlations, it is possible to derive many design parameters, thus limiting our reliance on these soil tests. The authors have decades of experience in geotechnical engineering, as professional engineers or researchers. The objective of this book is to present a critical evaluation of a wide range of empirical correlations reported in the literature, along with typical values of soil parameters, in the light of their experience and knowledge. This book will be a one-stop-shop for the practising professionals, geotechnical researchers and academics looking for specific correlations for estimating certain geotechnical parameters. The empirical correlations in the forms of equations and charts and typical values are collated from extensive literature review, and from the authors' database.