EXPERIMENTAL RESEARCH ON INTERFACIAL BONDING PROPERTY OF HIGH PERFORMANCE CGM TO CONCRETE

In this paper，the test of the Z-shape shear specimen of CGM to concrete showed how water mixing ratio， curing age and the CGM strength level affected the interfacial bonding properties of CGM to concrete． The result indicated that the interfacial bonding properties increased with the growth of the bonding age，and the growth rate gradually decreased． When repaired the old concrete with CGM，the shear strength of CGM to concrete decreased with the increase in the strength of the CGM ( the decreasing of the water mixing ratio) ． The cube compressive strength decreased with the fluidity increasing which was due to the increment of the water mixing ratio，but it was favorable to the improvement of the bonding performance of CGM to concrete．