The Copper Fiber on Compressive Strength and Elastic Modulus on Concrete Fc'25

Abstract

Concrete is produced from several materials which are mixed into one unit so it becomes like a stone. Concrete mixture consists of cement, coarse aggregate, fine aggregate, water and added or not additives. Cement as a binder when mixed with water will occur chemical reactions so that the hardening process occurs, while the aggregate serves as a filler for concrete. The use of concrete as a building material is now increasingly widespread, this shows the growing need for concrete, thus encouraging to create information about concrete mixtures. One of the innovations is the addition of copper fiber as a partial replacement for coarse aggregate in the concrete mixture. From the results of the study after the addition of copper fiber there was an increase in concrete compressive strength, elastic modulus and concrete tensile strength. The maximum increase occurs in concrete with the addition of 1% copper fiber of 0.14% of normal concrete. Concrete compressive strength value with the addition of copper fiber 0% (normal) of 27.20 MPa, adding 0.8% of 28.73 MPa, adding 1% of 31.03 MPa, adding 1.2% of 26.18 MPa. Splitting tensile strength for the addition of 0% copper fiber by 2.55 MPa, 0.8% addition by 3.42 MPa, 1% addition by 3.54 MPa and 1.2% addition by 2.41 MPa. While the elastic modulus value with the addition of copper fiber is 0% for 24512 MPa, adding 0.8% by 25192 MPa, adding 1% by 26181 MPa and adding 1.2% by 24048 MPa.