Before costruction of buildings, core samples of near-surface regolith (soil) are usually obtained and subjected to various engineering geology analyses.
This cylindrical soil core has just undergone an unconfined compression test, which is used to assess the strength of geologic or manmade materials (soils / regolith, bedrock, concrete, etc.). The bottom of the core is slightly swollen and is now fractured - this is called "failure".
Tags: unconfined compression test engineering geology soil core cores regolith deformed deformation fracture fractures fracturing failure
Before costruction of buildings, core samples of near-surface regolith (soil) are usually obtained and subjected to various engineering geology analyses.
This cylindrical soil core has just undergone an unconfined compression test, which is used to assess the strength of geologic or manmade materials (soils / regolith, bedrock, concrete, etc.). The bottom of the core is slightly swollen and is now fractured - this is called "failure".
Tags: unconfined compression test engineering geology soil core cores regolith deformed deformation fracture fractures fracturing failure
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.
At left is a Shelby tube extruder, a machine that is pushing core material out from a tube.
Tags: Shelby tube extruder 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
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