Cement composites reinforced with surface modified coir fibers

Abstract

An experimental investigation of coir mesh reinforced mortar (CMRM) is conducted using nonwoven coir mesh matting. The main parameters in this study are the fiber volume fraction (number of mesh layers) and fiber surface treatment with a wetting agent. The composites are subjected to the four-point bending test. The short-term mechanical properties of CMRM are discussed. Scanning electron micrograph analysis is used to observe the fiber&mdash;matrix interfacial characteristics. The results indicate that the addition of coir mesh to mortar significantly improves the composite post-cracking flexural stress, toughness, ductility, and toughness index, compared to plain mortar materials. The Albatex &copy; FFC wetting agent (2-ethylhexanol) can effectively improve water absorption of coir fiber and enhance the fiber&mdash;matrix bonding strength. These coir mesh reinforced composites may be useful in civil engineering applications.<br /