Estudo de viabilidade da utilização de placas de concreto celular espumoso como alternativa ao revestimento de estruturas com tecnologia Light Steel Frame

Abstract

The advancement of technology in civil construction is intrinsically linked to the need to have more efficient, fast, economical and advantageous processes, in addition to obtaining molded and erected structures with more sustainability and durability. In this way, the Light Steel Frame technology stands out for being a construction modality of fast execution. Likewise, the application of cellular concrete in buildings has grown, since the material offers advantages, such as its low density and better thermal and acoustic comfort. In this sense, this study seeks to evaluate the application of foam concrete plates in the coating of structures with light steel frame technology, also using reinforcement materials, such as polypropylene fibers and sugarcane bagasse ash. For this, five types of foam concrete, with foam generated through the mechanical action of a mixer and with a foaming chemical additive, were molded and evaluated, using the same reference dosage, being, without reinforcement, with 0.1%, 0.25% and 0.5% polypropylene fiber, in addition to 20% ash from sugarcane bagasse, however, the mix with 0.5% polypropylene fiber could not be tested, as the addition caused the loss of material characteristics. The properties were evaluated in the fresh state (density and consistency of the fresh concrete by measuring its settlement) and in the hardened state (flexural tensile strength and compressive strength). From the tests, it was verified that the minimum strength for use was not reached in any of the traits studied, making it not feasible, for the percentages of dosage and reinforcement adopted, the application in coatings that demand greater flexural tensile strength.