Materials

Innovations abound in the aggregate production sector - Mike Woof reports. With road construction accounting for a significant percentage of aggregate production, developments in this industry are of major importance for the highway sector. Technical advances in aggregate production methods have pushed technological boundaries, resulting in cost/tonne reductions for products and improving operating efficiency for major producers.

Flip Screen Australia has developed the EX80 screening attachment. The offers a simple and robust design and is said to be durable enough to stand up to the most demanding industries including aggregates and roadbuilding, construction and recycling.

A new system for reducing the risks of road water run-off contamination is now available from HYDRO International. The firm's new Downstream Defender is said to be an advanced hydrodynamic separator and is designed to meet tough new European regulations for treatment of suspended solids and pollutants in surface water run-off.

Sandvik Mining and Construction has introduced two new crushers to its product range. The CH890 and CH895 are said to offer greater structural strength as well as using proven technologies. Designed to increase performance in both secondary and tertiary crushing applications, these units feature more power and increased crushing forces in order to increase productivity. The CH895 has a specially designed, strength-optimised topshell as well as dedicated crushing chambers, which best suits it to tertiary and

A new VSI crushing system is helping Tarmac boost sand production at a key quarry in the UK. Manufactured sand is now being produced at the Tarmac Blashford quarry where a new VSI from Sandvik Mining and Construction is delivering product of high quality, specifically sized and shaped for construction purposes.

In this second article of a three-part series on pavement preservation, Alan S. Kercher, of Kercher Engineering, discusses the different techniques that can be utilised as part of the preservation toolbox

A Metso mobile screen has proven its efficiency in a demanding screening project involving rock-based recycled materials in Italy. The Lokotrack ST3.5 has been used at a site in Pollenza, south of Rimini, to classify difficult, rock-based recycle materials. The machine is operating with a capacity of around 1,000tonnes/shift and the optional vibrating grid fitted has ensured that the screened end products remain clean.