. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography 26 Clay Fabric and Geotechnical Properties of Sediment Cores Consolidation Tests Laboratory tests with the Anteus Back Pressure Consoli- dometer were performed on selected sediment samples from cores B—1 and B—2 following standard procedures discussed by Lowe (1964) and Bryant and others (1967). Consolida- tion test data from these cores were used to evaluate sedi- ment core quality. Principles of consolidation testing have been treated in detail by
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography 26 Clay Fabric and Geotechnical Properties of Sediment Cores Consolidation Tests Laboratory tests with the Anteus Back Pressure Consoli- dometer were performed on selected sediment samples from cores B—1 and B—2 following standard procedures discussed by Lowe (1964) and Bryant and others (1967). Consolida- tion test data from these cores were used to evaluate sedi- ment core quality. Principles of consolidation testing have been treated in detail by Terzaghi (1925b), Terzaghi and Peck (1948, 1967), and by Lambe (1951). A typical dia- grammatic void ratio versus logarithm of pressure curve (e-log p) and the standard graphical construction of the preconsolidation pressure is depicted in figure 28, repre- senting a typical, "normal" sediment commonly encountered in testing terrestrial soils. The preconsolidation pressure, Pc, is defined as the greatest stress to which a sediment has ever been subjected. The graphical construction as pro- posed by Casagrande (1936), using the e-log p curve, theo- retically, determines the preconsolidation pressure. Extensive back pressure consolidation testing has been carried out on submarine sediment from various depositional environments in the Gulf of Mexico. These surficial sub- marine clays tested are characterized by an atypical e-log recompression (Casagrande 1936) P^ Graphical reconstruction of preconsolidation pressure, Pc. Curve typical of "normal terrestrial clay soils (Modified after Morelock and Bryant 1966) 1 (log) pressure Figure 28.—Typical consolidation test—void ratio versus logarithm of pressure Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atlantic Oceanographic and Met
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