Influence of compaction on chloride ingress

Influence of compaction on chloride ingress

Zlopasa, J.

Civil Engineering and Geosciences

Structural Engineering

2012-07-22

Experiences from practice show the need for more of an understanding and optimization of the compaction process in order to design a more durable concrete structure. Local variations in compaction are very often the reason for initiation of local damage and initiation of chloride induced corrosion. Poor compaction is often manifested locally in concrete structures in the form of large voids, profuse honeycombing and heterogeneity. Controlling compaction in practice today depends largely on the operator and his experience. The reliability of such a practice goes with many uncertainties. Depending on the exposure conditions, cement based materials maybe attacked by aggressive substances which can influence the performance of a concrete structure. Therefore the change in chloride ingress was investigated as a function of compaction time and sample depth. In this paper the Rapid Chloride Migration method, (RCM), was used and test results show a change of the diffusion coefficient with time of compaction. Along with the RCM results, the compressive strength was measured and the results are presented as well.

http://resolver.tudelft.nl/uuid:c655273a-0fb5-4a26-9b4e-0bdbe4eb7514

KIT Scientific Publishing

978-3-86644-858-2

Proceedings of the 9th fib International PhD symposium in Civil Engineering, Karlsruhe, Germany, 22-25 July 2012

Institutional Repository

conference paper

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