Mechanical Properties of Concrete using Annealed Binding Wire Fiber Carter Kandou (a*), Ikhsan Dwipayana (a), Herman Parung (a), Rudy Djamaluddin (a), Arwin Amiruddin (a)
a) Civil Engineering Department of Hasanuddin University
Jl. Poros Malino km. 6, Gowa 92119, Indonesia
*) ckandou[at]yahoo.com
Abstract
Concrete has weakness in the lower tensile strength and it is brittle so that concrete is given steel reinforcement to overcome it. One major challenge on reinforced concrete building is to reduce structures failures risk by increasing tensile strength of concrete. One alternative that used to increase tensile strength is with fiber additional on concrete material.
In this research, the concrete mix is given additional material of annealed binding wire fiber. Annealed binding wire fiber used is 0,8 mm in diameter and 36 mm, 48 mm and 60 mm in length so that it is gained the ratio aspect of every diameter as many as 45, 60 and 75. The test on the concrete includes compressive strength test, tensile strength test and flexural strength test. The compressive and tensile strength test were conducted on cylindrical testing materials with 200 mm in height and 100 mm in diameter. The test of flexural strength was conducted on a rectangular beam material with size of 100 mm and length 400 mm.
The testing material consists of 48 cylinders and 24 concrete beam with 3 sample for each composition. The fiber concentration is 0,75% volume fractions.
From the test, it is gained that the compressive strength test, tensile strength test and flexural strength test of the concrete are higher than they are in normal concrete. From the test on compressive strength and tensile strength, it is gained optimum value on the fiber length of 48 mm and 60 mm. The compressive strength test rises as many as 32,3% and 12,4% compared with it is at normal concrete. The tensile strength test rises as many as 20,94% and 24,08%. For flexural strength test, it is gained value 28,29% and 40,49% compared with normal concrete.
