Esclerometria como ferramenta de controle de qualidade para peças de concreto para pavimentação

Abstract

Although the term quality control has grown tremendously in recent centuries, it’s possible to see that humanity has always been concerned with this type of control, for example the Egyptian embalming. However, it is remarkable that with the increase of the manufacturing technology the quality control becomes increasingly necessary. Among the sectors that grew the most are the precast industry for construction, among which it can be highlighted the concrete pavers. The precast pieces are designed to increase productivity and theoretically the quality of the final product. One of the characteristics that are expected pre-molded parts is that their physical characteristics, such as compression resistence, are within a certain pattern established on specific standards. However, because the manufacturing process is very fast, which are made thousands of pieces per day, the quality control does not follow this reasoning. Generally the quality control is related to the compressive strength, which is usually determined by destructive testing. The destructive tests are carried out by presses, and can only give a final result at the age of 28 days. In order to expedite this process came about the possibility of using non-destructive testing, which in turn can be related to the destructive test at 28 days. Among the most common and viable destructive testing this the rebound hammer test, which determines hardness of parts.