Mixing it up - Progressive Building

Claiming that New Zealand is 25 years behind Europe in the availability of drymix cement-based products, new Auckland-based company Cemix Drimix is building a fully automated cement plant that will produce up to 20 tonnes of finished, bagged product per hour.

Project manager Bhav Dhillon argued that there has been very little control over what happens on a New Zealand building site.

“Concrete blocks are made to fairly rigid specifications, yet builders mix concrete and mortar dumped on site with shovels.”

The computer-controlled plant aims to provide consistent product with up to 17 different ingredients and will require only four people to operate it.
Another salient feature of the plant design is that it will handle dry powder material without using screw conveyors or air slides. Instead, it will incorporate the patented fluidisation technology from Raute Precision Oy, Finland. The technology makes powders (sand and cement) flow like liquid, enabling the use of double-flap butterfly valves for accurate and high dosing.
Scheduled to begin operations this October, Cemix will initially supply dry concrete, quick-setting concrete, mortar mix and masonry mix.

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