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Robert Petts provides a practical example of gTKP at work. There is a substantial requirement for a range of sealers and binders in the global road infrastructure sector. The principal need is for the construction and maintenance of road surfaces and pavements. Globally, more than 100 million tonnes of bitumen are produced each year, mostly for use in the road sector.

Improvements to Komatsu’s PC700LC have resulted in the Dash 8 version. Operator comfort gets the biggest change, with an all-new cab that gets a fixed, laminated front windscreen for increased operator protection, a heated high-back air-suspension seat, and a standard rear-view camera. Also new, for maximum efficiency said the company, is a widescreen LCD colour monitor panel that integrates Komtrax ‘step 3’ functionality with fuel consumption monitoring. The 323kW PC700LC-8 has an operating weight from 65-

Kleemann will showcase the Mobicat MC 100 R mobile jaw crusher from its successful Contractor Line. Weighing approximately 36tonnes it is relatively easy to transport and thus also ideal for smaller jobs, and there is the option to lower the crushing unit hydraulically to a height of 3,200mm for transport purposes. The powerful diesel engine with 228kW, together with the hydraulic crusher drive, ensures maximum feed capacity of up to 200 tonnes/hour, says Kleemann. The MC 100 R has sufficient power reserve

This is the final section of a three-part series about preventive maintenance for pavements. Written by Alan S. Kercher, P.E., Kercher Engineering, Inc We practice preventive maintenance in our everyday lives and possibly with agency equipment such as dump trucks and backhoes, but when it comes to maintaining our roadways, most agencies will always defer repairs until the pavements have failed, resulting in very expensive repairs. This article will provide some guidance to help an agency make the switch fr

JCB is moving up a class in the wheeled loader market with the introduction of its new 457 model. Replacing the earlier 456, the new 457 is the biggest and most powerful wheeled loader the firm has ever built and has a 235kg increase in load capacity. The new 8.9litre Cummins diesel with its variable geometry turbocharger meets the Tier 4 Interim/Stage IIIB emissions requirements while also offering reductions in fuel consumption over the engine used in the earlier model. Full electronic control of engine f

Built with heavy-duty steel and featuring 4x4 axles, autoshift transmission, four-wheel and crab steering with equal size tyres, Hidromek’s HMK102S backhoe loader is now being used in projects in five continents and more than 60 countries. The company says customers have described the machine as “robust” and “productive”.

A team of eminent Russian specialists* introduce exciting new information technologies, such as the Internet of Things, and foresee their promising applications in the field of transport infrastructure development. Global economic growth, combined with explosive digital technology proliferation, brings new challenges to the field of transport infrastructure. Technical advances such as Intelligent Transportation Systems (ITS), vehicle to infrastructure interfaces, global positioning, electronic toll collecti

As the world descended on Vancouver for the 2010 Winter Olympics, visitors were able to travel around the city with confidence and intelligence thanks to a landmark project by IRF Member, Delcan

Caterpillar says its new Telehandlers - TH336C, TH337C, TH406C and TH407C - feature the company’s C4.4 ACERTTM engines that meet Stage IIIB emissions standard and are available in a 92.6kW (124 hp) or a 106kW (142hp) rating. The C4.4 engine is said by Cat to be designed and manufactured to ensure smooth, quiet operation and longevity. Fuel consumption is also said to be optimised to match the tasks, lowering operating costs. A larger, redesigned cooling package with a hydraulic reversing demand fan is also

The lower angle of Caterpillar Work Tools’ new line of buckets for the E-series Hydraulic Excavators are said to concentrate the power of the machine across a smaller surface, offering less resistance to the material flow into and around the bucket resulting in a smoother and faster dig cycle. In addition, ‘Tip forward’ - the tip position that opens up the mouth of the bucket and lengthens the floor - has been moved towards the operator. This is said to improve both material flow into the bucket and visibi

Fayat’s development of the Compact asphalt mixing plant is to create a continuous flow of multipurpose product, including cold, warm and hot mix. Optimum energy management for mixing aggregates in the most effective way while the bitumen is hydrophobic is one criteria that the new plant offers, along with the ability to recycle materials according to typology. The feed is conventional and either into the tube via the ring, or into the continuous mixer, or both, for recycled materials. Bitumen is introduced

Unic Cranes Europe (UCE) has made a teaser video showcasing what the company claims is the world’s strongest mini crane - set to be unveiled at INTERMAT 2012. The Unic URW-1006 mini spider crane is said to have an unrivalled 10tonnes of lifting power as well as 30.7metres lifting height and 24.3metre working radius. According to UCE, the machine’s 2metre width allows it to retain class-beating minimal dimensions for working in restricted spaces.

The new redesigned Cat K Series Small Wheel Loaders—924K, 930K and 938K— being unveiled at Intermat 2012 are said to incorporate new Stage IIIB/Tier 4 Interim emissions standard engines and many new performance enhancing features. An efficient electronically controlled hydrostatic drive system, new optimised Z-bar loader linkage, refined operator's station and a choice of couplers and buckets for best matching the machine to the application are among the notable features on the debuting wheel loader models,

Ammann is using INTERMAT to reveal its UniBatch range of asphalt mixing plants. With capacities from 80-350 tonnes/hour, this new plant type incorporates flexibility, and a larger selection of modules to allow the system to be expanded as required. Energy efficiency and reduced emissions are key elements of the UniBatch range, which is said to be is compatible with all of Ammann's recycling technologies. Mixer capacities extend from 1.3-4.3tonnes, hot silo storage is from 45-120tonnes and mixed material sto

Ammapax is the simple and cost-effective solution from Ammann to suppress noise levels for those operating plants close to residential areas. Available in three different designs that can reduce noise pressure levels by up to 10 dB, 15 dB and 20 dB, the Ammapax does not require any additional installation space, as it is lowered into the mixing plant’s chimney and fixed to the chimney opening using four bolts. It can also be used in third party plants, said the company.

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 An agency should utilise a comprehensive preservation toolbox that includes various techniques, which can be applied to specific needs. There is no one technique that will cost-effectively address all pavement problems. However, there are many preservation techniques that can provide an agency with the ab

Michel Démarre gives some historical insights into public-private partnerships conceived to implement urban infrastructure projects, a concept that surprisingly dates back to as early as the 13th century! All over the world today, the role of public authorities in the process of planning and, in most cases, designing, financing and procuring urban roads is paramount. Even for modifications to existing roads, decisions are made by these public authorities (usually after due consultation with the population)

Oliver Carsten, Professor of Transport Safety at the Institute for Transport Studies (ITS) at the University of Leeds, UK, discusses Intelligent Speed Adaptation, looking at its safety potential

GTZ highlights a pioneering scheme illustrating the potential of Bus Rapid Transit systems as a viable approach to alleviate the traffic and social problems faced by large cities worldwide Most major cities worldwide have been characterised by the phenomenon of steadily growing urbanisation accompanied by exponentially increasing numbers of private motorised vehicles. This has led to congested roads and sprawling cities, with commuters having to travel long distances to and from work. Despite huge inves

Tony Marshall, Director at Arup, looks at ways in which the company encourages sustainable mobility.From policy and systems development through to the design and execution of major infrastructure projects, he reviews Arup's global project experiences and research programmes. Space on roads throughout the modern world is decreasing as the volume of cars and road users increases. How can mobility be safeguarded without compromising quality of life or environmental well-being? As engineers, we have a responsib