Abstract
High strength steel fiber reinforced concrete (HSSFRC) was prepared with the help of steel fiber. 0.5%, 1.0%, and 1.5% steel fiber by volume of concrete specimen was used in concrete for present investigation. Compressive strength test and flexural strength test were conducted on cubical and prismatic specimens respectively.The main objective of the research work is to validate the experimental out comes by a numerical technique such as micromechanics approach. A high strength steel fiber reinforced concrete whose compressive strength is greater than 60 N/mm2 was prepared and tested on concrete testing machine. Flexural strength test was conducted on universal testing machine to evaluate the bending properties of concrete. It was observed that with increase in the percentage of steel fiber volume the compressive strength and flexural strength also increases. However the workability of concrete declines and concrete is no longer in working condition. Micromechanics technique helps to predict the strength properties which save time required for casting and such technique was found to be beneficial.
Highlights
To predict the strength properties of concrete two classic micromechanics models, rule of mixtures and Mori-Tanaka can be effectively utilized
Compressive strength test was conducted on compression testing machine
The compressive strength values achieved from micromechanics method shows greater values than experimental values of compressive strength for 0.5%, 1% and 1.5% of steel fiber
Summary
To predict the strength properties of concrete two classic micromechanics models, rule of mixtures and Mori-Tanaka can be effectively utilized. Knowing the properties of steel fiber and the matrix (mixture of cement, fine aggregate, coarse aggregate and admixture) properties of steel fiber reinforced concrete can be predicted [1]. The properties of matrix were predominant to acquire high stresses in concrete [4]. The behavior of fiber reinforced concrete is investigated by micromechanical structure. Mori-Tanaka method was used to study the linear elastic behavior of fiber reinforced concrete [5]. To develop steel fiber reinforced concrete model the finite element method and micromechanics method have been applied. To find the effective fiber reinforced concrete modulus the multiphase micromechanics technique was used [6].
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