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Efficiently scan large areas and find embedded metal and non-metal objects, live wire, PT cables on multiple layers in concrete. KEY TECHNICAL DATA Accuracy of depth indication: <100 mm: ±10 mm;>100 mm: ±15 % Localisation accuracy: ±10 mm Max. detection depth for object localization: 400 m Features Provides a real-time inside view of concrete structures […]

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Batch of below-strength building steel sold in NZ

Steel rods or bars used to reinforce concrete

Seismic grade steel reinforcing bar that is not as strong as it should be has been sold in the New Zealand market. A Wellington builder spotted the problem when he grew suspicious about how easily the bar was bending. But Euro Corporation, which imports the bars from Malaysia and sells them through Bunnings, said there […]

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Time to recycle your old concrete

Waste concrete is pricey to dispose of and often ends up dumped on the side of the road or in a pile at the bottom of the garden. But New Plymouth’s Symon Klemra has a solution, and it’s both environmentally friendly and free. Mr Klemra set up Taranaki Concrete Recyclers in November last year, a […]

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Concrete buildings pose greater quake risk

Reinforced concrete buildings built before the 1980s pose the biggest risk to life in a major earthquake, says the chairman of Wellington-based international seismic consultancy. Kit Miyamoto, who leads Miyamoto Impact, said this was shown in Christchurch where most of those killed in the quakes lost their lives in the CTV building, a big, heavy […]

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‘Bendable’ concrete used in Wellington buildings

Spray-on “bendable” concrete sounds oxymoronic, but it’s helping earthquake-strengthen the century-old toilets in Wellington’s Courtenay Place as they are converted to a pizza bar. The concrete, called Flexus, will also be used to shore up vulnerable older buildings in Christchurch. Derek Lawley, general manager of Auckland firm Reid Construction Systems, said Flexus had polyvinyl alcohol […]

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Concrete slot reduces shake damage

Researchers at Canterbury University have developed an inexpensive detail to improve the way reinforced concrete buildings perform in earthquakes. Structural engineering PhD candidate Craig Muir said tests at the university on a 60-tonne, two-thirds scale model of the lower two storeys of a seven-storey building stood up incredibly well when subjected to earthquake-like movement. Tests […]

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