caa a22 4500 467930511 CHVBK 20180406152942.0 cr unu---uuuuu 170328e20061201xx s 000 0 eng 10.1007/s10706-005-5726-2 doi (NATIONALLICENCE)springer-10.1007/s10706-005-5726-2 Eid Hisham Civil Engineering Department, University of Qatar, 2713, Doha, Qatar aut Factors influencing determination of shale classification indices and their correlation to mechanical properties [Elektronische Daten] [Hisham Eid] The influence of sample preparation procedure on the measured classification indices such as clay-size fraction, liquid limit, and plastic limit of shales was investigated. Shale samples covering a wide range of composition and plasticity were tested using standard and modified preparation procedures to yield quantitative data required for this investigation. The study specifies the range of shale plasticity in which the measured values of clay-size fraction and liquid limit are sensitive to hydrometer specimen size and rehydration time, respectively. The study also revealed that the degree of shale particle disaggregation has an important influence on the measured clay-size fraction and liquid limit. This influence is maximized for shales with intermediate plasticity and can be interpreted in terms of particle size and shape. Correlations were established between classification indices derived from standard and modified sample preparation procedures. It is recommended to use these correlations to adjust shale classification indices derived from standard sample preparation procedures usually utilized by commercial laboratories. Such correlations help in creating a universally followed procedure for better estimation of shale engineering properties and reliable interpretation of case histories involving shale formations. Springer, 2006 classification indices nationallicence clay-size fraction nationallicence liquid limit nationallicence particle disaggregation nationallicence preparation procedure nationallicence shale nationallicence shear strength nationallicence slope stability nationallicence swelling potential nationallicence Geotechnical & Geological Engineering Kluwer Academic Publishers 24/6(2006-12-01), 1695-1713 0960-3182 24:6<1695 2006 24 10706 https://doi.org/10.1007/s10706-005-5726-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10706-005-5726-2 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Eid Hisham Civil Engineering Department, University of Qatar, 2713, Doha, Qatar aut NATIONALLICENCE 773 0- Geotechnical & Geological Engineering Kluwer Academic Publishers 24/6(2006-12-01), 1695-1713 0960-3182 24:6<1695 2006 24 10706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer