This apparatus is used in engineering geology to perform an Atterberg Limits Test. The test assesses the mobility of wet, fine-grained sediments - usually from surface or shallow subsurface soil samples - before construction projects begin.
A moist sediment sample is placed in the lower half of a metal cup called a Casagrande cup. A tool is used to remove some of the sediments in the form of a straight groove. The cup is then lifted and dropped numerous times automatically or using a hand crank. The number of drops needed to close part of the groove is recorded. The test is performed using different sediment moisture contents.
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Info. at:
en.wikipedia.org/wiki/Atterberg_limits
Tags: Atterberg limits test Casagrande cup engineering geology
This apparatus is used in engineering geology to perform an Atterberg Limits Test. The test assesses the mobility of wet, fine-grained sediments - usually from surface or shallow subsurface soil samples - before construction projects begin.
A moist sediment sample is placed in the lower half of a metal cup called a Casagrande cup. A tool is used to remove some of the sediments in the form of a straight groove. The cup is then lifted and dropped numerous times automatically or using a hand crank. The number of drops needed to close part of the groove is recorded. The test is performed using different sediment moisture contents.
-----------------------------------
Info. at:
en.wikipedia.org/wiki/Atterberg_limits
Tags: Atterberg limits test Casagrande cup engineering geology
Geologic research often requires cutting through rocks. Reasons for this include revealing the nature of unweathered interiors and making thin sections (= thin slices of rock glued to slides) for microscopy. Ideally (because different details can be discerned), the characteristics of rocks are best appreciated by examining weathered surfaces, unweathered crack surfaces, cut surfaces, and polished surfaces.
Rock saw blades have numerous, tiny, industrial-grade diamonds embedded in the metal. Some rocks are not cuttable (e.g., saprolite) and others are very slow going through a rock saw (e.g., hard quartzite). Cutting can be done dry, which kicks up much dust - this should not be breathed in. Many rock saws use water as a lubricant and to keep the blade cool, while others use oil.
Tags: rock saw saws
Shelby tubes are cylindrical containers used to obtain cores of near-surface regolith. Soil samples from such cores are usually obtained for various engineering geology analyses. This tube still contains a core of regolith.
Tags: Shelby tube core cores soil regolith engineering geology
Shelby tubes are cylindrical containers used to obtain cores of near-surface regolith. Soil samples from such cores are usually obtained for various engineering geology analyses.
Seen here is a Shelby tube extruder, a machine that pushes core material out from the tube.
Tags: Shelby tube extruder core cores soil regolith engineering geology