Concrete

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Reinventing basic materials

By David Hindley 1 April 2022, Build 189, Feature article

World-class research, award-winning designs and a new mindset are all helping New Zealand manufacturers, architects and designers take a fresh approach to those most fundamental of building materials – concrete, steel and timber.

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Concrete fire spalling

By Robert Jansson 1 June 2014, Build 142, Feature article

Fire spalling can drastically reduce the fire resistance of a concrete structure. During a PhD study, significant differences in spalling behaviour of concrete were found under different test conditions.

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Good vibrations

1 August 2013, Build 137

One of the keys to good-quality cured concrete is correct vibration after it’s poured. This compacts it and consolidates the mix by removing trapped air. But how do you get it right?

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Is that concrete floor dry yet?

By Neil Lee 1 February 2006, Build 92, Feature article

Fresh concrete contains significiant water which evaporates over time. Installing floor coverings on the floor slab before it’s dry is a recipe for disaster, so how do you know if it’s dry enough?

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