Experimental creep tests and prediction of long-term creep behavior of grouting material

摘要: Rock reinforcement systems, such as resin-grouted rock bolts, display complex creep behavior because both grouting materials and bolts show time-dependent behavior. In this paper, only the of material was investigated, in which tests conducted triaxial compression apparatus at room temperature. The test specimens were provided from Araldite epoxy resin used reinforcement. We attempt to predict long-term parameter using define characteristics bounding material. short-term tests, three different axial confining stress levels applied steps each specimen. transient for all described by power function fit properly time–strain curves. maximum difference between proposed model experimental strain less than 7.1 %. It observed that rate a specimen directly depends on deviator (i.e., σ1–σ3).