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ASTM D4506-13
- Standard Test Method for Determining In Situ Modulus of Deformation of Rock Mass Using Radial Jacking Test
- standard by ASTM International, 11/01/2013
- Publisher: ASTM
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1.1 This test method is used to determine the in situ modulus of deformation of rock mass by subjecting a test chamber of circular cross section to uniformly distributed radial loading; the consequent rock displacements are measured, from which elastic or deformation moduli may be calculated. The anisotropic deformability of the rock can also be measured and information on time-dependent deformation may be obtained.