Aprimoramento do processo produtivo de uma empresa de pavers em Natal/RN: um estudo de caso

Abstract

Concrete is known to be a material widely used in the construction industry and which, among many applications, there is the manufacturing of precast concrete, more specifically the pavers. It is also known concrete needs to include technological management in order to ensure quality, safety and saving. Due to such limitation, the production process of a company specialized in interlocking paving components based in Natal. RN is the study object of this research. This study is justified by the application of the knowledge acquired in the Civil Engineering course to indicate improvements in a problem situation, as well as by guiding future researches on quality control of pavers. Therefore, the theoretical review of studies on the technological control of the concrete (BAUER, 2000; HELENE e TERZIAN, 1992) was carried out and field study and collecting materials (components and inputs) to manage trials to assess quality. Conditions of material storage and characterization, of mixing, of dosing, of releasing, of densification, of conveying and of curing were analyzed. During the study, the average mass mixtures used at the construction site were determined: 1:4, 67:4, 90:0 and 80. Based on such proportions, the manufacturing of concrete blocks in ideal laboratory conditions was conducted in order to determine the characteristic resistance and compare it with the one presented by test specimens created at the production center. In conclusion, the components will not reach the minimum resistance of 35 MPa due to the quality of the used mixtures, even though the flaws in the production process are corrected.