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EPC Products Civil Engineering Testing Instruments Geotechnical Testing Rock & Soil Testing Laboratory Soil Testing Soil Mechanical Properties LASER MEASUREMENT OF RADIAL DISPLACEMENTS IN TRIAXIAL TESTS: ENSG
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LASER MEASUREMENT OF RADIAL DISPLACEMENTS IN TRIAXIAL TESTS: ENSG

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The measurement of strain in triaxial shear tests and the subsequent determination of the key soil parameters (shear modulus, elastic modulus, etc.) is critical to understanding the mechanical behaviour of soils.


Most currently available systems need to set the measuring system directly on the soil sample to be tested, which can disrupt the soil and therefore the results (Cole 1978, Clayton et al. 1989). Thus, some authors have implemented contactless systems, including devices based on the use of a  laser spot (eg Romero 1999; Dasari 2002; Messerklinger & Springmann 2007). These devices have the advantage of not requiring contact with the specimen and so do not disrupt the mechanical behaviour of soil.

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