124. Resistance of SCC to acetic and lactic acid

Title: 124. Resistance of SCC to acetic and lactic acid
Author(s): V. Boel, G. De Schutter
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Print-ISBN: 978-2-35158-047-9
e-ISBN: 978-2-35158-088-2
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 823 - 828
Total Pages: 6
Nb references: 6
Language: English

Abstract: Self-compacting concrete (SCC) can be placed without any compaction. Because of this, some health risks as well as environmental problems could be avoided. The two essential properties of SCC are a high flowability and a high segregation resistance obtained by a large amount of fine particles and the use of superplasticizers. Self-compacting concrete and traditional concrete (TC) are based on different mix designs. As such, a different pore and microstructure of the cement matrix might occur causing a different durability.
A research project has been set up in order to investigate the behaviour of SCC concerning acetic and lactic attack. This project includes the study of 16 SCC mixtures and 4 traditional concrete mixtures. 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 immersed in a solution of acetic and lactic acid in water. The mass loss as well as the strength loss of the specimens are measured. All parameters mentioned above are evaluated. These results are further linked with the information obtained from laboratory tests on water transport in concrete. Also the relation with the pore structure has been studied.

Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00