Empreendimentos em estrutura de parede de concreto autoportante utilizando concreto autoadensável com macrofibras estruturais

Abstract

This article to present a technical feasibility study of projects in a self-supporting concrete wall structure using self-compacting concrete (SCC) with macro structural fibers (FGRC). The analysis was based on the constitution of the self-compacting concrete line reinforced with structural glass fibers defined for a specific project, as well as the analysis of the results of compressive strength of the technological control of the work. From the present case study, it was concluded that the concrete used presented excellent performance in terms of workability, measured by spreading, fully meeting the limits defined in the technical specification of the work. Regarding the results of compressive strength, it was found that the average strength of 12 hours was not met in one of the four residential blocks analyzed and, in addition, there was a high percentage (46%) of nonconformities of compressive strength to the 28 days old. It is noteworthy that the points of improvement presented are typical of an innovative technology that goes through the phase of insertion in the civil construction market. Adjustments must be carried out in order to accelerate the learning curve of the new technology, thus allowing for gains in scale and reduction of desired costs.