Rubberized Asphalt Cement

A Section of the Rubber Recycling Plant


The institute has modified and developed technology to reclaim rubber from used tires, and furthermore, to process the recovered rubber particles into rubberized asphalt cement by reacting it with bitumen at high temperatures. The process avoids the use of liquid nitrogen, which is used in other countries, and most of the critical pieces of equipment were manufactured here in Guyana at the institute.

The rubberized asphalt cement was exhaustively tested as a high-friction coating for steel bridges, on the Demerara Harbour Bridge over a period of five years. Bridge engineers reported no failure of the material and superior performance over the imported coating material. The material is also well suited for the repair of highway cracks and for patching cracks and holes due to its high adhesiveness and wide ranges of extensibility, a role for which bitumen alone is ill-suited. In 2014, technical staffs were trained to operate the small mobile asphalt plant and asphalt pump that the institute acquired in 2013 in order to mechanize the operation, increasing production throughput and efficiency. The Institute is waiting on the Demerara Harbour Bridge for approval to commence coating of the entire harbor bridge.