HIGH PERFORMANCE CONCRETE: TECHNICAL RELATIONS IN ITS PRODUCTION ASSOCIATED WITH THE CONVENTIONAL CONCRETE

Reference Presenter Authors
(Institution)
Abstract
09-014 Mônica Mollina Moreira Junior, V.A.(Centro Universitário de Votuporanga); Albuquerque, M.F.(Universidade Estadual Paulista); Moreira, M.M.(Centro Universitário de Votuporanga); Rocha, J.A.(Centro Universitário de Votuporanga); The ability to withstand higher demands for compression with a reduced concrete volume and consequently a greater utilization of useful construction area, as well as constructions with a longer lifetime, more durable and sustainable, has been encouraging researches and emphasizing the importance of high performance concrete (HPC). In the current study two concrete mixes were defined with the objective of achieving characteristic resistance of the concrete to the compression of 25 MPa (conventional concrete) and another one of 50 MPa (high performance concrete). The objective was getting satisfactory workability and resistance for both concretes only using material proportions in the established doses from bibliographies and academic works. For both mixes, technical controlling parameters were analyzed for the concrete production, like: the beginning of the concrete setting time, curing period and initial resistance gain until the 28th day. Literature methods were used to elaborate the concrete mixes. The results showed that to produce high performance concrete, there is a need for greater technical control and the need for correction of the initial dosage so that it can present the minimum of the desired characteristics. For the conventional concrete, its production and final product didn’t require the need to correct the first dosage to obtain the desired characteristics.
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