EXPERMENTAL RESEARCH OF GLUBAM AFTER ARTIFICIAL ACCELERATED AGING

GluBam is a new kind of environmentally friendly and energy efficient composite material in civil engineering developed in recent years． But the mechanical performance after subjected aging under the outdoor conditions is a blank of research． In this paper，a new artificial accelerated aging test method and equipment for GluBam were presented ． The basic material performance，including deformation changing，tensile properties， compressive properties，bending properties and internal bonding strength were tested according to the different equivalent aging duration． The failure mode of specimens showed that delamination of GluBam caused by dry-wet cycle was the main reason for mechanical properties degradation． All test results present monotone decreasing trend and the internal bonding strength was the most sensitive to aging duration． Aging influence factor ，internal bonding strength correlation coefficient and thickness deformation correlation coefficient can be used to evaluate aging performance of GluBam，but the accuracy of evaluation results need further research． GluBam exposed to the dry wet cycle condition needs necessary waterproof measures ，which should be specially investigated further．