Caracterização de materiais cimentícios fibrosos leves

Abstract

Due to the increasing search for better materials, as well as the improvement of existing ones, an important area of study is the scientific and technological development of materials for civil construction aiming to meet the required requirements and cost of production in the area. A very promising field, however, not so explored is the so-called lightweight concrete, which has properties that can approximate those of traditional material, but with much less weight. This type of material, attributed to the incorporation of synthetic fibers in the light mortar will lead to an improvement in the properties of the concrete, among them the main one is the resistance after the formation and displacement of the crack. In this way you can develop materials for numerous situations that require strength and lightness. Various types of aggregates can be used, depending on the application, among others Styrofoam, expanded clay, crushed EVA and vermiculite are used. This work aims to obtain lightweight concrete with addition of synthetic short polypropylene fiber for characterization and analysis of material properties. After the prismatic test specimens were manufactured, a bending, compression and scanning electron microscopy (SEM) test was carried out, following this order, we determined an efficiency factor for each composition and also made comparisons between fibrous and non-fibrous aggregates fibrous. The results were efficient according to the composition of the used aggregate. The benefits of this type of concrete in civil construction are evidenced.