High strength steel fibers reinforced self-compacting lightweight concrete. Analysis as reinforcement material in beams.

Abstract

Often it is necessary to reinforce structural elements of an existing building. It is possible to use different reinforcement techniques to solve this problem, including fiber reinforced concrete, due to its flexural strength properties. Due to the advantages that this material possesses, adding an easy execution with a minimum addition of own weight without the use of vibration in the structure, steel fiber reinforced high strength lightweight selfcompacting concrete is developed (SHLSCC). This project aims to assess the effectiveness of the HLAARFA as reinforcing material of elements subjected to flexion, using materials and manufacturing systems in our region. The material-level behavior of HLAARFA will be studied,and then scale models of structural elements of beam type will be tested. The behavior of reinforced beams will besimulated by designing a simplified numerical model that allows the calculation of the resistant bending moment. The simulation will be carried out through use of finite element analysis software using the modified mixture theory. The different sources of uncertainties in the parameters of the model will be considered. Finally, statistics of the results obtained will be made and will be contrasted with the experimental data.