Field test system for mechanical properties of existing glass curtain wall structural adhesive

Abstract

The invention provides a field test system for mechanical properties of an existing glass curtain wall structural adhesive, which is used for testing the mechanical properties of a glass curtain wall structural adhesive in site. The field test system mainly comprises a drive control system (1), a power supply system (2), a fixed sucker vacuum maintaining system (3) and a tension sucker vacuum maintaining system (4) which are respectively accommodated in four box bodies (A, B, C and D) supported on the front side, the rear side, the left side and the right side of a bracket, wherein the drive control system is used for receiving test data to control a step motor, the power supply system provides a power supply to each system, a fixed sucker of the fixed sucker vacuum maintaining system is used for installing and fixing the test system on a curtain wall, and a tension sucker is in contact with the glass curtain wall and applies a load to glass. The load and deformation on the glass curtain wall are respectively obtained through a stress sensor and a displacement sensor, and therefore a load-deformation function curve of the structural adhesive on the glass curtain wall can be obtained through a data acquiring and analyzing device and is externally displayed or outputted. The fixed sucker vacuum maintaining system and the tension sucker vacuum maintaining system ensure that a certain vacuum degree is kept in each sucker in a test period. The field test system is capable of accurately measuring the adhering strength of the structural adhesive, and has the advantages of small size, light weight, simplicity in operation, accuracy in measurement, and the like.

Description

technical field [0001] The invention relates to an on-site detection system for the mechanical properties of the existing glass curtain wall structural glue. Background technique [0002] The current testing methods for the mechanical properties of glass curtain wall structural adhesives are limited to laboratory sample preparation and testing. Curtain wall structural adhesive laboratory sample preparation testing is only suitable for the inspection of structural adhesive products for new curtain walls, and can only obtain the tensile strength and elongation rate of the colloid itself; for existing curtain walls, the key to safety appraisal is structural adhesive stretching The bonding strength depends not only on the tensile strength of the structural adhesive itself, but also on the bonding surface treatment, whether to use a primer, the quality of the glue and other process factors, as well as the influence of outdoor environment changes; the existing curtain wall structu...

AI Technical Summary

Problems solved by technology

Curtain wall structural adhesive laboratory sample preparation testing is only suitable for the inspection of structural adhesive products for new curtain walls, and can only obtain the tensile strength and elongation rate of the colloid itself; for existing curtain walls, the key to safety appraisal is structural adhesive stretching The bonding strength depends not only on the tensile strength of the structural adhesive itself, but also on the bonding surface treatment, whether to use a primer, the quality of the glue and other process factors, as well as the influence of outdoor environment changes; the existing curtain wall structural adhesive is affected by the above-mentioned Due to the influence of conditions, there is a big deviation between the laboratory test and the actual situation on site, and the test in the laboratory cannot truly reflect the quality of the existing curtain wall structural adhesive

The prior art proposes a test device and method for determining the failure site of the structural sealant by measuring the deflection obtained under the condition of local loading. However, this test method should also consider determining the relationship between the deflection and the failure of the structural sealant. relationship and various factors affecting deflection, and the test site may damage the glass panel of the curtain wall. The field test is complicated and can only be used as a research, and the test method is difficult to promote.

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