Abstract
In recent years, several investigations have been reported on the strength and behaviour of concrete reinforced with natural fibers. Since natural fibers are available in abundant quantities in many developing countries, more elaborate research should be directed toward the various problems associated with the use of these fibers. This paper presents a critical review of the factors that affect the properties and behaviour of natural fiber reinforced concrete (NFRC). Test results for concretes obtained by using water blended with yeast granules are also reported in this paper.