STUDY OF MODULUS ELASTICITY OF PVC COATED WELDED MESH FIBER CONCRETE

Abstract

Modulus elasticity is an important parameter that shows the ability of concrete to deform elastically. Data analysis to obtain that value of modulus elasticity can be done with several approaches. To compare some of these approaches and to study the effect of fiber to the modulus elasticity of concrete, an experiment on the addition of PVC coated welded wire mesh fiber to the concrete mixture has been conducted. The specimen in this experiment was a cylindrical specimen with a diameter of 150 mm and height 300 mm. There are 3 variations in this experiment : (1) variations in the fraction of percentage of wire fiber; (2) fiber’s length variation and (3) length interlocking variation. Extensometer was installed onto the specimens to measure stress-strain of concrete while the compressive strength was conducted. The data obtained and then analyzed. The result of the analysis  showed that the higher the fiber’s fraction added to the concrete mixture, the greater the modulus elasticity resulted. However, PVC coated welded mesh fiber concrete has a less value of modulus elasticity when it compared with normal concrete due to the slip effect between fiber and concrete. Furthermore, there are some approaches with good agreement and some indifferent results.