Behaviour of self-compacting concrete concerning frost action with deicing salts

Title: Behaviour of self-compacting concrete concerning frost action with deicing salts
Author(s): V. Boel, K. Audenaert, G. De Schutter
Paper category : conference
Book title: International RILEM Symposium on Self-Compacting Concrete
Editor(s): O. Wallevik and I. Nielsson
Print-ISBN: 2-912143-42-X
e-ISBN: 2912143713
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 837 - 843
Total Pages: 7
Nb references: 2
Language: English

Abstract: As the conception of SCC is totally different from traditional concrete, some changes in durability behaviour might occur. Especially the durability with regard to frost action in combination with deicing salts is of great concern in Northern Europe. The concrete is damaged by exposure to freeze-thaw conditions due to the expansion of water in the capillaries on freezing. The expansion results in micro-cracking with a consequential loss of strength and modulus of elasticity. Also the spalling at the surface is of great importance with regard to deterioration because the possibility of ingress of water and air through the micro-cracks can lead to reinforcement corrosion.
A research project has been set up in order to investigate the behaviour of SCC concerning frost action in combination with deicing salts. This project includes the study of 12 SCC mixtures and 1 traditional concrete mixture. The following parameters are studied: SCC versus TC, type of filler, cement/powder ratio, water/cement ratio, water/powder ratio and the type of cement. The concrete specimens are submitted to 28 freeze/thaw cycles. Every 7 cycles the mass loss of the specimens is measured. All parameters mentioned above are evaluated. These results are further linked with the information obtained from laboratory tests on water absorption and capillary suction. A further evaluation of the obtained results by investigating the actual pore structure of the concrete is going on.

Online publication: 2003-08-21
Publication type : abstract_only
Public price (Euros): 0.00