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A BlueMAC trommel and pick station in Northern Ireland.

Case Studies
Partnership offers new heavy duty plant, solutions

A new partnership will provide quarrying and recycled aggregates operators with access to international plant and equipment solutions. Damian Christie spoke to Simon Toal of Skala Australasia about what BlueMAC Manufacturing has to offer the industry. Read more »
Spent fluid cracking catalyst is produced at Mobil and Shell refineries.

Case Studies
Reuse of oil catalyst in cement manufacture

A joint Boral, Shell and Mobil project that used oil industry spent catalyst as a raw material replacement in cement has diverted 4000 tonnes per year of material from landfill, conserved virgin resources and provided cost savings. Brian McGrath reports. Read more »
The recycling and subsequent reuse of crushed rock and glass reduces the demand for virgin materials.

Case Studies
Blending of recycled glass and crushed rock in road pavements

An extensive laboratory testing program in Victoria, with assistance from recycled aggregates producer Alex Fraser Group, has enabled a team of researchers to analyse the suitability of a recycled glass-crushed rock blend as a sub-base material. Read more »
Various concrete pavement surfaces after polishing to AS1141.41.

Case Studies
Specifying manufactured sands for concrete applications

With the diminishing availability of natural sand resources in many regions around the world, quarry engineers and concrete technologists have taken up the challenge in improving the production and selection of quality man-made sands suitable for concrete production.  Read more »
 Field trial – Hanson Brandy Hill quarry.

Case Studies
Coal power station waste as a fine aggregate replacement in concrete

With sand resources likely to be depleted in the future, attention is turning to options for fine aggregate. Rishabh Satsangi discusses research into the use of coal bottom ash as a viable substitute for the application of sand in concrete manufacturing. Read more »
The equipment and testing sequence shown in the improved MBV method.

Case Studies
New test method for assessing fine aggregate

Traditionally, good quality manufactured sand for use in concrete mixes has been achieved by measuring and chemically treating the deleterious clays within the fines. Leon Bablouzian, Nathan Tregger and Tasha Eagle outline a new test procedure for assessing clay contamination.
Read more »
Australia is very fortunate to have high quality black coal deposits readily available.

Case Studies
Developing high performance construction materials with coal combustion products

A by-product of the coal-fired power process, coal combustion products – CCPs – are an alternative for roadbase materials and concrete applications. Michael van Koeverden discusses the properties of CCPs and how they can be adapted to roadbase design. Read more »
Six companies are disputing the application of the carbon tax on alternative waste treatments.

Waste recovery operators hit by carbon tax

The waste management and recycling industry, which should be booming under the carbon tax, is perversely being hit hard, according to waste recovery operators.
Read more »
Rocklogic is a unique Australian-engineered technology that provides safety integrated remote operation, collision avoidance, and automated parking technology for rockbreakers.

Robotic breaker system wins technology award

Australian innovative materials handling company Transmin was a winner at the 21st Annual Western Australian Information Technology and Telecommunications Awards (WAiTTA). Read more »
Each cell is constructed from clay, is about 100 metres wide and 350m long.

Case Studies
Generating power from ‘holey’ ground

When all the quarry’s work is done, what do you do with the old void? Is landfill the answer? Boral, with Energy Power Systems Australia, has developed a solution for tapping power from landfill waste. Damian Christie and Mandy Parry-Jones report. Read more »
The easiest way for producers to check the performance of their woven wire screen media is  to look closely at the pile of discarded screen media for a history of recurring problems.

Seeking higher returns from screen maintenance

When considering low production volumes, aggregate producers often focus too much on their crushing operations and not the performance efficiency of their screening operation. Read more »
The publication "Guidelines on Quarry Rehabilitation" has been published by the WBCSD.

Guidelines on Quarry Rehabilitation published

The World Business Council for Sustainable Development (WBCSD) publication “Guidelines on Quarry Rehabilitation” has been released. It offers practical guidance on managing the impact of quarrying and provides direction on the principles of quarry rehabilitation. Read more »


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