Evaluación de las propiedades mecánicas en hormigones de alta resistencia autocompactantes reforzados con fibras metálicas normalizadas y fibras metálicas no normalizadas

Abstract

Several structures, or parts of them are subjected to high stresses, thesemakes structural engineers recommend large sections and large amounts of steel reinforcements generating congestion. The concrete studied has self-compacting and high strength properties.The studies to be carried out with new building materials require experimental processes that take a lot of resources, therefore, it is desirable to develop a methodology that minimizes the use of thereof. The objective of this research is to identify whether the inclusion of normalized standard and non-standard metal fibers affects the mechanical properties of concrete studied. The method used is based on determining the amounts of fiber to be included in concrete for each treatment, as well as the repetitions of it. Based on this distribution specimen were manufactured and tested for obtaining compressive strength, slump, wave velocity, elastic modulus and Poisson's ratio. The obtained data was processed by statistical methods that indicate which treatments were significantly different and what effects were considered relevant. Mathematical equations were obtained by multiple linear regression, and expressed by three-dimensional graphics that represent the phenomenon under study. The inclusion of normalized fibers of up to 20kg/m3 does not influence the settlement whenever another type of fiber is not included, including fibers at any level of the experimental space increases the resistance compression, it is recommended to continue the investigation under the response surface methodology.