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Greg Baumgart (left, Boral Australia) is the winner of the CCAA Health & Safety Innovation Award, presented by Chris Whiting MP (centre) with Peter Ambrose (Holcim Australia).

News
Holcim, Boral Shine at Gala Awards Ceremony

Holcim Australia has bagged two of the three 2018 Queensland CCAA Innovation Awards to celebrate outstanding achievements across the construction materials industry. Read more »

Case Studies
Heavy equipment hire helps avoid capital risk, project delays

With demand for specialist machines outstripping supply globally, and with construction materials at a premium locally, quarries are feeling the “pinch” of the infrastructure boom. As Delta Rent’s Richard Khan explains, plant and equipment rental could be part of the solution to this “squeeze”. Read more »

Case Studies
Producer hails new era in recycling of glass fines

Alex Fraser Group, one of the largest recycled aggregates producers in Australia, has announced it is taking its glass recycling one step further by building an improved processing plant at its Laverton facility. Adam Somerscales discusses the company’s plans and vision. Read more »

Case Studies
Tramp metal removal system cleans up dolomite reserves

Heavy-duty metal detectors and a suspended electromagnet, used to clean up aggregates, have been instrumental in removing ferrous and non-ferrous tramp metals from one of the world’s largest dolomite operations. Read more »
The processing plant for clayey shell limestone at the Mönsheim quarry.

Case Studies
Twin-shaft mixer increases yield by 25 per cent

Raw materials from a quarry that were previously sent to landfill are now being sold after a twin-shaft mixer was employed to add quicklime to clay-contaminated pre-screened material. This ‘dry process’ has made it possible to completely separate the clay from the rock for processing. Read more »
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 »


 

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