Chloride Penetration Coefficient and Freeze-Thaw Durability of Waste Metakaolin Containing High Strength Self-Compacting Concrete
Proceedings of the International RILEM Conference Materials, Systems and Structures in Civil Engineering 2016 Segment on Service Life of Cement-Based Materials and Structures 2016
Ģirts Būmanis, Diāna Bajāre

Traditional ordinary concrete testing methods are still applied to characterize self-compacting concrete (SCC). This allows comparing properties of two types of concrete, however, the efficiency of such testing methods is still under question due to superior properties of SCC. In the present research high strength SCC using metakaolin containing waste as partial cement replacement was created and its durability characterized. Constant amount of water was used in all mixtures and workability (>600 mm by cone flow) was ensured by changing the amount of superplasticizer. The compressive strength was tested at the age of 7, 28 and 180 days. The chloride penetration was tested according to NT BUILD 492 and freeze-thaw test was performed according to LVS 156-1:2009 annex C respectively. The compressive strength of SCC at the age of 28 days was from 68-70 MPa. The results indicate that the chloride penetration test method NT BUILD 492 is a fast and progressive test method which could effectively characterize SCC, while freeze-thaw resistance test of SCC could take up to 6 months to reach 150 freeze-thaw cycles using 5% NaCl solution as de-icing solution for concrete specimens and more rapid and reliable testing method should be used instead.


Atslēgas vārdi
Metacaolin, concrete

Būmanis, Ģ., Bajāre, D. Chloride Penetration Coefficient and Freeze-Thaw Durability of Waste Metakaolin Containing High Strength Self-Compacting Concrete. No: Proceedings of the International RILEM Conference Materials, Systems and Structures in Civil Engineering 2016 Segment on Service Life of Cement-Based Materials and Structures, Dānija, Lyngby, 22.-24. augusts, 2016. Lyngby: Technical University of Denmark, 2016, 435.-442.lpp. ISBN 978-2-35158-171-4. e-ISBN 978-2-35158-173-5.

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