Guangzhou is one of the earliest cities in China to use architectural glass curtain wall,the early construction of architectural glass curtain wall has exceeded 25 years of design life,with the increase in the use of years,the quality of glass curtain wall problems have gradually emerged,of which the aging problem of structural adhesive of hidden frame glass curtain wall is particularly prominent.By sampling the structural adhesive of a hidden frame glass curtain wall with Shore hardness exceeding the standard requirements,the maximum strength elongation,tensile bond strength,shear strength and so on were tested and studied.The research results show that the elongation at the maximum tensile strength of the structural adhesive after hardening becomes significantly smaller,but the tensile bond strength and shear strength have less influence.34.8%of the eight specimens have the elongation at the maximum tensile strength,which is much smaller than the requirement of not less than 100%as required by"Silicone Structural Sealant for Construction:GB 16776-2005"[1],and the tensile bond strength and deformation capacity meet the specification requirements.
existing glass curtain wallsilicone structural sealanttensile bond strengthelastic deformation capacity
NETL
NSTL
维普
万方数据
