CHLORIDE PENETRATION COEFFICIENT AND FREEZE-THAW DURABILITY OF WASTE METAKAOLIN CONTAINING HIGH STRENGTH SELF-COMPACTING CONCRETE

Author(s): Girts Bumanis, Diana Bajare
Paper category: Proceedings
Book title: proceedings of the International RILEM Conference on Materials, Systems and Structures
in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures
Editor(s): Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad and Ole Mejlhede Jensen
ISBN:978-2-35158-171-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 435-442
Total Pages: 8
Language : English

Abstract: 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.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00