Preparation and performance of coir?fiber?reinforced epoxy composite geogrids

Abstract

Abstract: In this paper， coir-fiber-reinforced epoxy composite geogrids were prepared by using coir fibers as a reinforcement material， and the effects of the content， length， and rib spacing of coir fibers on their performance were investigated through the tensile tests of multi rib grids. The results indicated that the tensile yield force of the composite geogrids presented an increase at first and then tended to decrease with an increase in the coir fiber content. The composite geogrids obtained maximum values in tensile properties at a coir fiber content of 1 wt%； however， their tensile performance was poorer than that of pure epoxy grid when the coir-fiber content exceeded 1 wt%. The tensile yield force of the composite geogrids also exhibited an increase at first and then decreased with increasing the coir fiber length， the tensile yield force of composite grid also increased first and then decreased. Their tensile yield force reached a maximum value at a fiber length of 1 cm， which was 34.33 % higher than that of pure epoxy grid. Compared to the fiber length and content， the rib spacing presented a more significant influence on the composite geogrids， whose tensile yield force reached a maximum at a rib spacing of 1 cm.

Key words: coir fiber, epoxy resin, geogrid, tensile property

References

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