Materials

MINNESOTA CITIES including Minneapolis and Richfield have been testing pervious concrete on parking lots and other hard surfaces to improve storm water management. In Shoreview MN, the authorities went a stage further by opting to replace a storm drainage system with pervious concrete.

Cleaning the crushed and screened products can boost quality and revenue. Aggregate Processing Solutions has developed a novel washing system aimed at the quarrying sector. The APS-100AT has been developed after almost five years of research and development and is said to be an innovative multi-component material washing system, featuring a highly efficient, heavy duty linear multi-deck screen.

A crushing and screening system comprising Sandvik mobile machines is proving useful on a project in Brazil. Construction work on the BR-222 highway in the city of Irauçuba, in the Ceará state close to the equator in the northeast of Brazil is benefiting from a fleet of Sandvik crushing and screening units. The mobile machines in use include a QA450 triple deck screener, QH330 cone crusher and QJ340 jaw crusher. The project involves upgrading the BR-222 highway, which joins the cities of Fortaleza and Sobra

Superior Industries is widening its line of Chevron wing pulleys. The new units are designed for construction applications and can be used in light duty, portable conveyors that make infrequent starts and stops. The wing pulleys retain the firm's patented v-shape construction, which is said to help deflect material and prevent it from lodging. The company claims that the design performs better in tough applications than standard wing pulleys. Because the risk of material becoming trapped between the pulley

Most of the major manufacturers of extraction and crushing equipment worldwide will be present at the upcoming Hillhead show, either directly or through local distributors. Set in a working quarry, the Hillhead exhibition has set a lead for the quarrying sector. An industry only show, the event is being held this year at the Hillhead Quarry, Buxton in the UK on 22-24 June.

Astec, the US-based manufacture of hot mix asphalt (HMA) plants and associated equipment, has appointed Sergey Dymov as director of sales, Northern Europe.

Recycling is a key issue for asphalt road construction, with many technologies now coming to market. Bith an ever increasing emphasis on sustainability forcing change in the construction sector in Europe and North America, the highway sector now has to seek new solutions.

Solutions for a reduction in emissions, recycling and more efficiency are being introduced by major asphalt plant manufacturers as Patrick Smith reports. The demand to reduce all types of emissions and increase the use of recycled material has put pressure on industry to come up with answers, and asphalt production is no exception.