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Selected Properties of Cement Bound Spruce and Larch Bark Bio-Aggregates

Johannes Urstöger1, Marius Cătălin Barbu1,2, Thomas Pacher1

  • 1Forest Products Technology and Timber Construction Department, Salzburg University of Applied Sciences, Markt 136 a, 5431 Kuchl, Austria.

Polymers
|December 28, 2021
PubMed

Keywords:
cement-bonded bark-based composite materialslarchsprucetree bark

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Deleterious substances in aggregates can be detrimental to the quality and durability of concrete. These substances include organic impurities like loam, which interfere with cement hydration and are usually present in the sand. These prevent a good bond between aggregate and cement paste. Organic impurities can be detected using the colorimetric test, where the darkness of a solution after agitation indicates the level of organic content.
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