In this paper a new rock joint surface roughness measurement method is presented, with the use of a camera-type three-dimensional (3D) scanner as an alternative to current methods. For this study, the surfaces of ten samples of tuff were digitized by means of a 3D scanner, and the results were compared with the corresponding Rock Joint Coefficient (JRC) values. Up until now such 3D scanner have been mostly used in the automotive industry, whereas their use for comparison with obtained JRC coefficient values in rock mechanics is presented here for the first time.
F.04 Increase of the technological level
COBISS.SI-ID: 1832789During long term lasting traffic load bellow threshold load, due to densification of underlying soil and unbound layer,s theirs residual strain incrementally increases up to a certain asymptotic value, which presents a stable state. When load is over that threshold value, residual strain continue to increase up to failure. Laboratory testing procedures on cyclic hollow cylinder apparatus and cyclic triaxial aparatus with vertical and lateral cyclic loading, which can model the rotation of principal stresses, are presented in the paper.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 1739623