Mechanical properties of steel/kenaf (hybrid) fibers added into concrete mixtures

International Conference on Innovative Technology, Engineering and Sciences 2018

工业技术;自然科学

Baarimah, A.O.^1 ; Syed Mohsin, S.M.^1

Faculty of Civil Engineering and Earth Resources, Universiti Malaysia Pahang, Lebuhraya Tun Razak, Pahang Gambang, Kuantan

26300, Malaysia^1

关键词: Control mixtures;    Flexural tests;    Hybrid fiber;    Minimal effects;    Mode of failures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/342/1/012075/pdf
DOI  :  10.1088/1757-899X/342/1/012075

来源: IOP

【 摘 要 】

This paper investigates the potential advantages of adding hybrid steel-kenaf fibers to concrete mixtures. Compression and flexural test were conducted on six concrete mixtures at 28 days to investigate the mechanical properties of the concrete. The experimental work consists of six concrete mixtures, in which the first mixture was a control mixture without adding any fiber. The following five concrete mixtures contain a total of 1% of volume fraction for steel, kenaf and a mixture of steel-kenaf (hybrid) fibers. Three ratios were considered for hybrid fibers with the ratios of 0.25/0.75, 0.5/0.5 and 0.75/0.25 for steel and kenaf fibers, respectively. From the investigation, it was observed that fibers have minimal effect on compressive strength of the concrete. However, the findings suggest promising improvement on the flexural strength of the concrete added with hybrid fiber (up to 86%) as well as manages to change the mode of failure of the beam from brittle to a more ductile manner.