SCLEROMETRY TEST ON CONCRETE USING RIGID POLYURETHANE FOAM RESIDUES TREATED WITH CONDUCTIVE GRAPHENE PAINT (Atena Editora)

Abstract

In order to guarantee the characteristics of concrete, one of the most used materials in civil construction, technological control is fundamental, making it necessary to search for adequate tools and methods to verify the properties of concrete structures. The most used methodologies to analyze and confirm the compressive strength of concrete are the destructive tests, whose purpose is to obtain parameters that confirm its strength, quality and durability. Currently, there are other methodologies, such as non-destructive tests, which are becoming increasingly attractive due to the ease of collecting data in loco, with the advantage of quick results and not causing damage to structures. The present study was carried out on a sample of concrete with rigid polyurethane treated with conductive graphene paint (PURP) with the application of non-destructive testing of concrete, using a Schmidt type sclerometer to estimate the compressive strength. The methodology used was based on the definitions of NBR 7584:2012, which determines the minimum of nine impacts in each area, it was decided to carry out 9 impacts for 50% of PURP and 9 impacts for 25% of PURP, which obtained if the sclerometric index per point, then the correlation was performed to estimate the characteristic resistance. Therefore, the sclerometry test is capable of indicating the compressive strength of PURP concrete, obtaining data that contribute to the reliability of the technological control, without causing damage to the analyzed element.