Properties of Coir Fibre Reinforced Bituminous Mixes | Chapter 5 | Recent Developments in Engineering Research Vol. 9

The effect of Coir fibre on the rheological properties of asphaltic materials indigenous to Trinidad, namely Trinidad Lake Asphalt (TLA) and Trinidad Petroleum Bitumen (TPB), has been investigated for fatigue cracking and rutting resistance. This research provided strong rheological evidence for the ability to manufacture specially formulated TLA and TPB adapted Coir blends to meet unique applications. In general, TLA and TPB adjusted blends containing 10 mm fibres will have the highest resistance to fatigue cracking, but the lowest resistance to rutting, whereas blends with 2.5 mm fibres will have the lowest resistance to fatigue cracking, but the highest resistance to rutting. InThe fatigue cracking resistances of pure TLA and TPB were greater than those of the adjusted blends in terms of temperature susceptibility, with the exception of the 8 percent TLA Coir fibre blend that showed superior resistance to fatigue cracking between 60 and 70 ° C. In contrast to the pure binders, the TLA and TPB Coir modified blends were more resistant to rutting. Compared to unmodified parent binders, the 8 percent Coir fibre TLA blend demonstrated a degradation in rutting resistance between 60 ° C and 70 ° C. While studies have not yet been thoroughly conducted related to the quantification of greenhouse gas (GHG) emissions due to asphalt paving, improvements in rheological characteristics may lead to a he reduction in related emissions of GHGs from this energy-intensive sector.

Author (s) Details

Rehana Ali
University of Trinidad and Tobago, Point Lisas Industrial Estate, Point Lisas, Trinidad and Tobago.

Nazim Mohamed
University of Trinidad and Tobago, Point Lisas Industrial Estate, Point Lisas, Trinidad and Tobago.

Donnie Boodlal
University of Trinidad and Tobago, Point Lisas Industrial Estate, Point Lisas, Trinidad and Tobago.

Rean Maharaj
University of Trinidad and Tobago, Point Lisas Industrial Estate, Point Lisas, Trinidad and Tobago.

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