β Scribed by A.P.W. Hodder; J.R. Hetherington
No coin nor oath required. For personal study only.
Geotechnical tests (point load, Los Angeles abrasion, and Shore hardness) and field tests of strength (schmidt hammer, shear vane, and penetrometer) were carried out on a range of samples from fresh greywacke to greywacke-derived soil, in a single quarry. Many samples showed a smaller-scale variation: essentially an unweathered core with a weathered rim. The variation of strength across such transects was measured and correlated with indices determined from mineralogy and chemical composition. This correlation enables a prediction of strength of similar rocks in the region which may be Used as a cheap alternative to geotechnical testing, at least for regional reconnaissance of aggregate resources.
π SIMILAR VOLUMES
Weathering of chert artifacts from three Lapita sites (ca. 3000-2000 B.P.) in the Southeast Solomons is examined. It is shown that the rate of weathering is strongly influenced by soil pH, mineralogy, and prehistoric burning of the material. The concentrations of some major elements (Na, C1, K, All