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Specimen Preparation Articles & Analysis
8 articles found
It’s not often you lovingly hug a 450-pound piece of equipment, but if it makes your work life easier you show your appreciation. The CDS-5 helps lab technologists create consistent and reliable environments for their work regardless of the day-to-day variables, like the weather. Imagine the weather outside impacting your office work indoors. Sounds inconvenient, right? That used to be a ...
Techniques for rapid and precise fabrication of hollow cylinder specimens of cohesive materials are presented. A device to accelerate the displacement sensor mounting process is ...
Static torsional simple shear tests were performed on poorly graded sand, with and without prior cyclic loading, to evaluate changes in static shear strength. Specimens were prepared at three densities (loose, medium, and dense) and were subjected to one of three levels of cyclic loading corresponding to 0.25, 0.50, or 0.75 times the static stress level, causing ...
The delay between sampling and testing of clay specimens and the control kept over their volumes during storage are known to affect the strengths and compressibilities subsequently measured in the laboratory. ...
A modified Bromhead ring shear apparatus is described, which incorporates vanes on the loading surfaces to improve torque transfer to the specimen. The specimen thickness is increased to accommodate the vanes. A method of specimen preparation is described that ensures a flat shear surface in the center of the ...
Among the available procedures for obtaining reconstituted laboratory sand specimens, pluvial compaction appears to best simulate the natural processes leading to formation of sand deposits. Although widely used for a long period of time, effects of some components of the specimen preparation equipment (sand rainer) on the relative density of the ...
A specimen preparation procedure is presented that offers an improved method of preparing reconstituted sand specimens for cyclic triaxial testing. ...
It covers the specifications of the testing apparatus, specimen preparation, procedures, data reduction, and the report ...