Materials

Specialist equipment is available for carrying out a variety of important tests on asphalt It is important to know how asphalt will react to various conditions such as heat, cold and traffic loads when it is laid on roads. Project specifications will give detailed criteria of what is required, and companies will either ask outside laboratories to make sure the material meets the specs, or will often carry out such tests themselves with trained staff in an on-site laboratory. This will be equipped with the

Major Wire Industries’ (MWI) Flex-Mat 3 Double-Wire High-Performance, Self-Cleaning Screen Media is said to increase production when screening high-impact, heavy and abrasive aggregate on top decks. The side-by-side wire design of the Flex-Mat 3 Double-Wire is said by Canada-based MWI to add a slight spring to the wire that absorbs impact from heavy material or when the material is dropped from a longer distance. The new self-cleaning screen media system’s vibrating wire technology, combined with its side

Visualise today's concept of a major commercial traffic corridor in the western United States. A roadway responsible for delivering goods to Arizona, Nevada and Utah, that also connects Mexico to the United States to Canada through the North American Free Trade Agreement (NAFTA). What springs to mind? A multi-lane highway carrying thousands of vehicles a day past cities at speeds up to 113km/hour, while egress ramps make sure vehicles get safely to city streets and their final destination. This is not the c

An engineering "first" means that rehabilitation work on a vital Scottish bridge built over 40 years ago can be carried out smoothly A new report to the Forth Estuary Transport Authority (FETA) in Scotland recommends appointing Balfour Beatty Civil Engineering of Edinburgh as 'preferred bidder' to carry out the scheduled replacement of the bridge's main expansion joints in 2009. However, the report to the bridge authority says the tender price of £13.7 million (US$21.3 million) is some £5 million ($7.8 mill

Simem says that its new concrete mixing system offers greater throughput and product quality than other systems on the market. The new Xentrix mixer features a modular mixer design with an eccentric drive system. Because of the modular construction, Simem can build each unit to a specific requirement from a range of standard components. Managing Director Federico Furlani said, "We can produce modules for stock and assemble them to suit the customer order and we can reduce the delivery time, which is importa

Astec has test-fired the 250th burner manufactured since entering the burner market in 2003. Astec, an Astec Industries company, built the 150-million BTU/hr gas-and-oil-firing Phoenix Talon burner for Illinois-based Gallagher Asphalt Corporation. The company says its burners offer the latest in reliable burner technology combined with complete one-source responsibility, and it is able to offer everything from a simple burner replacement to a complete installed system, including retrofit installations.

Compact and easy to transport, the Booster 15 concrete pump from IMER can deliver material with aggregate sizes of up to 25mm and at pressures of up to 70bars. This hydraulic control, two-piston pump is offered in two different basic versions, one aimed at shotcreting applications and the other designed for use on compact sites for concrete pumping duties. Power comes from a low emission, low noise Lombardini diesel A range of standard features are fitted including a 12V electro-vibrator, cable remote contr