Avaliação do comportamento da aderência de um novo sistema de compósito laminado para reforço em estrutura de concreto

Abstract

The use of laminated composite materials for the reinforcement and / or repair of concrete structures at the site has increased significantly in recent years. This is due to the simpler application procedures in relation to other reinforcement techniques and due to the increased research on the adhesives available, mainly in the study of the bonding interface with the concrete. Previous experiments that the laminated laminate repair system PIPEFIX that uses the structural adhesive NVT 201E does not respond well only on metallic substrates, but also on concrete surfaces. In this work, an interaction of this promising structural adhesive with concrete was investigated. It requires the absence of standards for certification and qualification of adhesives with this standard, it was sought to use experiments parameterized in technical sheets of corrected adhesives on the market, so that it is possible to make comparisons between the results of the properties found. Axial compression tests, 4-point flexion and pull-out tests were performed. The flexion test was of great quality to confirm the efficiency of the NVT 201E for this use, since the specimens with this adhesive produced results 16.26% higher than those that were reinforced with a product label already marketed for this purpose. The other tests reiterated the possibility of NVT 201E being used to reinforce concrete structures and encouraged the continuity of the system's research.