Bad road 2

Road conditions in Selangor are set to improve a little – the state is set to begin using a new asphalt premix for its roads, one that it says will result not just in better and more durable road surfaces but also in cost savings for local authorities, The Star reports.

The new premix, called Cold Mix Carboncor, was trialled in a three-month long pilot project, and positive results from the evaluation has seen the compound been given the green light for use on state roads.

According to the report, the trial was conducted along stretches of Jalan Sungai Jati in Klang, with the new asphalt laid on 100 metre stretches alongside the current AC14 polymer-modified asphalt in use now. Both non-destructive and destructive testing were conducted.

Findings revealed that the Carboncor was durable and perfect for Malaysian weather, state infrastructure and public facilities committee chairman Zaidy Abdul Talib said. Compared to AC14, which isn’t very resistant to the effects of rain, the new asphalt can be used during the rainy season, because it needs water to be laid.

Zaidy added that testing also revealed that only a 25 mm layer depth of the Carboncor was needed for resurfacing works compared to twice the amount for AC14, which also needed a good foundation. This translates to less raw material being needed, cost savings.

“The Cold Mix is estimated to save up to 25% for resurfacing existing premix roads, 32% for new medium-to-high traffic urban roads and 40% for medium-to-high traffic rural roads,” he said, adding that its use would not involve the need for new machinery.

The state will however use the cold asphalt to patch up existing roads for now, according to Zaidy. “From these tests, we concluded that there was not enough friction created by the new premix, but it could be enhanced to be used as a surfacing premix in the future,” he explained.

Zaidy said the new asphalt would be recommended to all 12 local authorities in Selangor as well as the Public Works Department. The councils, he added, can utilise the Malaysian Road Record Information System (Marris) funds allocated to them by the state government to purchase the cold asphalt.