Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to the newest version of your browser.

Your browser appears to have cookies disabled. For the best experience of Construction News, please enable cookies in your browser.

Welcome to the Construction News site. As we have relaunched, you will have to sign in once now and agree for us to use cookies, so you won't need to log in each time you visit our site.
Learn more

Movers and breakers

Demolition/Recycling; Round-up of new plant and current projects from manufacturers and contractors in the demolition and recycling sectors

Bobcat

Carpet tiles and other internal floor coverings can easily be removed with a new skid steer loader attachment from equipment manufacturer Bobcat. The new Super Scraper gets under carpet and floor tiles to peel them from the ground. It is claimed the attachment leaves a smooth floor surface and cuts tiles cleanly to provide the option of tile recycling.

The attachment comprises a rotary disk with a self-sharpening cutting edge. Removing tile flooring has always been labour-intensive and the Super Scraper removes tiles in a fraction of the time taken by other methods.

With an operating weight of 78 kg the attachment can be fitted to seven of Bobcat's skid steer loaders. As with all Bobcat attachments, they are fitted securely to the plant in seconds with its Bob-Tach system. The Super Scraper can also be used as an outdoor tool to remove compacted mud, snow and ice mounds.

Sandhurst Plant

Plant manufacturer and supplier Sandhurst specified equipment for use on a demolition contract in Kent and has launched a versatile mini excavator.

Concrete footings and reinforced concrete were successfully broken at an electricity substation in North Kent by demolition contractor Tom Blackwell Plant using a heavy-duty Krupp hammer.

Work at Pepper Hill was carried out in preparation for the siting of 200-tonne electrical transformers. The company contacted Sandhurst Plant, which suggested it used a Krupp HM780 Marathon hammer with Blackwell's Komatsu PC210 excavator.

The hammer generates high impact blows and features three anti-wear devises. Idle blows are prevented and higher productivity is achieved with the use of a feature called AutoControl. Hammer wear is reduced with the help of a two-stage dust control system called DustProtector and operation downtime is reduced with the aid of an automatic lubrication system known as Contilube 2.

Sandhurst's MX-08XT mini

fitted with a Krupp hammer

A mini excavator launched by Sandhurst has been designed to be negotiate narrow internal spaces. Its new 0.8-tonne MX-08XT excavator is fitted with hydraulically operated extending tracks which can achieve a minimum width of 700 mm.

This allows the plant to pass through standard doorways and enter a small passenger lift for elevation to upper floors of high-rise blocks for use in top-down demolition. Once in position the excavator can achieve greater stability when its tracks are extended to 900 mm.

The MX-08XT is one of two new pieces of tracked plant launched this year by Sandhurst. Its 1.6-tonne MX-16XT excavator can also vary its width, between a minimum width of 1,000 mm and a maximum of 1,300 mm.

Ingersoll-Rand

Ergonomic design is a feature of a new hand-held air hammer designed for use in concrete surface preparation and metal removal.

The 3DW hammer, launched by Ingersoll-Rand, has a D-shaped handle and an outside trigger. The hammer features a ball-valve, tease-throttle design which, it is claimed, provides excellent control both vertically and horizontally.

The hammer is a powerful, versatile percussive tool, which offers a beneficial power-to-weight ratio, says the maker. It delivers a 76 mm stroke as standard and optional attachments give strokes of 51 mm and 102 mm.

Nordberg

Nordberg UK has been appointed the sole UK distributor of the Broyt range of track- and wheel-mounted face shovels. The appointment further expands the company's product line, which includes Nordberg crushers and screens, Rammer hydraulic hammers and attachments and Sandvik rock drills.

Nordberg has also appointed a new product manager in Roger Wyles, who brings with him 17 years of experience with the Broyt distributorship.

Nordberg is now responsible for the sale and support of three Broyt face shovels; the 600, 800 and 1000 series that cover the 40- to 65-tonne operating weight class. The models are available with a tracked or wheeled undercarriage, developed specially for hard rock applications. All models are powered by Volvo, Cummins or Caterpillar diesel engines and an electro-diesel version is offered as an option.

Anross

The Anross Segregator Bucket

A range of multi-purpose buckets that can carry out three distinct demolition and recycling processes has been launched by Anross. Its Segregator Bucket range for use on hydraulic excavators comes in five sizes and can screen, excavate and load material.

When not being used for screening, the bucket drum can be locked in place and the screening gaps closed to allow the bucket to be used for loading and excavating. The Segregator Bucket has a self-cleaning action and it can be used in wet and dry conditions.

Throughput in excess of 500 tonnes of material a day can be achieved and the bucket can be used for applications including demolition, screening quarry products, reclamation and garden reinstatement.

The company's range of segregator buckets will eventually be expanded to include models suitable for use with loading shovels. Anross managing director Rod Leyland said: 'The development of the Segregator Bucket design is a result of intensive research into the needs of the marketplace. This highlighted the demand for a multi-purpose bucket with the ability to screen, excavate and load.'

Finning

A Finning-supplied Cat takes a bite out of the Bull Ring

Part of a subway network in Birmingham city centre has been demolished using a CAT tracked excavator supplied by dealer Finning UK. Concrete structures at 'the hump', as the area is known locally, have been tackled with a Vibra-Ram P40 pulveriser fitted to a CAT excavator.

Demolition contractor Coleman & Company carried out the subway demolition and mass fill work as part of the £1.4 million city centre rejuvenation project currently under way. The powerful hydraulic jaw action of the pulveriser was put to good use on the project, said managing director David Coleman.

'The removal of the hump at Bull Street was a tricky operation. It is located in the heart of the city centre among department stores and busy high street shops,' he said. The equipment was selected in part for its quiet operation.

CRMS Demrec

Demolition rubble at the site of a former Jersey hotel was recycled using a Rubble Master RM60 compact crusher supplied by Bristol-based specialist equipment supplier CRMS Demrec.

The crusher was chosen for its compact size, ease of transport and environmental protection, which featured a dust suppression system relying on a fine mist of water. Other equipment supplied for the contract included a Rammer E64 city hammer fitted to a Case 788 P Wheeled excavator. The hammer was selected in part for its low noise characteristics.

Thyssen Krupp

Finite element analysis was used to design the housing and moving jaws of a powerful hydraulic pulveriser employed recently to demolish a six building barracks in Germany.

Thyssen Krupp's new CP2300 pulveriser features a large, 600 mm contact face and bolt-on cutting teeth, which can be easily replaced when worn. The plant was used to tear down floor slabs measuring 120 m x 10 m and 120 m x 8 m at the barracks in Ludenscheid. Tapered foundations 2.8 m high, which decreased in diameter from 1.5 m at the bottom to 0.8 m at the top, were removed using the pulveriser. The CP2300 unit weighs 2,450 kg and its teeth have a breaking force of 105 tonnes. The teeth are made from particularly wear-resistant material and reversible blades can be fitted to cut through steel reinforcements.

The plant has been engineered so that the closing forces of the jaw is suited to the load conditions and it is suitable for mounting on carriers between 22 tonnes and 36 tonnes.

Raymond Brown

Greenham Common, site of the former US military airbase, was officially opened to the public on Saturday (April 8) after a four-year recycling and restoration project for the Ministry of Defence.

Following extensive restoration, the site was officially opened to the public at a ceremony at which fencing was removed to allow members of the community to use 500 ha of countryside for the first time in many decades.

Raymond Brown Construction has been responsible for the removal of concrete runways, hardstandings and infrastructure belonging to the former Berkshire airbase.

The runways and hardstandings had been built up and strengthened over many years and in some places a complicated 'sandwich' construction of reinforced concrete, asphalt and tarmac existed.

A huge recycling programme was carried out to process material on site and late last year the one millionth tonne of recycled material rolled off the weighbridge. Material was sold back to the construction industry by Recycled Rock and Aggregate, a 50:50 joint venture company comprising Raymond Brown and Foster Yeoman.

Land & Water Services

A super long-reach excavator launched by Land & Water Services has, in keeping with the company name, proved itself in the water as well as on the land.

Its EX700 excavator has a dig depth of 19.7 m, which makes it particularly suitable as an underwater tool carrier. The 80-tonne excavator has already been used for trenching a sea bed in water 20 m deep and has worked on a floating pontoon to dig a ship birth in heavy marl.

Neil Warren, project manager of Land & Water Services, who was involved in the production of the rig, said: 'We wanted a large and efficient multi- purpose hydraulic excavator that was fully road-transportable. We believe that this excavator is one of the largest machines available in its class for general hire in the UK.'

Compair

Equipment manufacturer Compair has launched a high-pressure air compressor for use on its Holman 42 and 73 ranges of portable demolition tools.

The company says the use of high air pressures, as delivered by its new 10 bar model, is becoming increasingly popular. The model features a four cylinder turbocharged diesel engine and can be used with pneumatic breakers for applications including road breaking, blast cleaning and trenchless installation of utilities.

Kobelco

A choice of computer-assisted operating modes is available for a range of three new heavy-duty Kobelco excavators to allow the plant to work as efficiently as possible, whatever the task in hand.

Kobelco's latest series of heavy-duty Dynamic Acera excavators features an engine management system which includes a computerised operation system called Fuzzy Logic. It gives the operator three working modes: assist (A), manual (M) and breaker (B).

In mode A the computer recognises and analyses the type of work being undertaken from the lever movements, be it digging, levelling, spreading or tamping. The computer assists the lever operation according to the recognised work pattern by matching engine speed and oil flow. The effect is shown on a graphic display inside the cab and it is possible to customise optimal work patterns to maximise efficiency.

An electronic fuel control system which works with Fuzzy Logic can also vary engine speed to reduce fuel consumption when working with light loads and produce maximum power on heavy loads to optimise fuel cost.

Mode B matches a breaker attachment's oil flow and weight requirements to achieve the most efficient breaking performance and mode M delivers the maximum possible horsepower for full-speed operation.

Kobelco's engine management system is fitted to all three models in the Dynamic Acera series, ranging from 20 tonnes to 30 tonnes. Digging performance is claimed to be up to 10 per cent greater than previous Kobelco excavators and greater plant stability is achieved through a lower centre of gravity and better track-weight distribution.