Experimental Study of Partial Compressive Strength to Lateral Face of CLT

Partial compressive properties to lateral face in Cross Laminated Timber (CLT) is important when we calculate a criteria of connections. However, the technical knowledge of studies on compression behavior of lateral face in CLT is still limited. In this study, we cleared the partial compressive properties, yield strength and initial and secondary stiffness, to lateral face by compression tests of CLT which are made of Japanese cedar. There were 24 types of specimens which have variety in width of an applied loading devices, location of applied loading devices, with or without edge bonds and side margins. As a result of experiments, the width of the applied loading device and the side margin have potent influence on the compressive yield strength and initial and secondary stiffness. It is assumed that the influence by the width of the applied loading device is size effect. The effect gets bigger when the width of the loading plates decreases. Also the side margin effect gets bigger when the width of the loading plates decreases. Additionally, the specimen which has over 100mm in side margin can be considered with infinite length. On the other hand, the perimeters of location of applied loading devices and with or without edge bonds has not potent influence on the compressive yield strength and initial and secondary stiffness.