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Comparison of the hardened properties of self compacting and normal vibrated concrete



Title: Comparison of the hardened properties of self compacting and normal vibrated concrete
Author(s): Y. Klug, K. Holschemacher
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: 596 - 605
Total Pages: 10
Nb references: 9
Language: English


Abstract: In the last years the hardened properties of self compacting concrete (SCC) has been researched frequently and there exist fundamental cognitions of the characteristic values of this innovative material. However, because of the clear differences, regarding the concrete composition of SCC and of normal vibrated concrete, it is to verify, whether the hardened properties of these concretes possibly differ significant from each other. In this context and for an efficient application of SCC as well as to gain by the high production-engineering and architectural-design potential it should be known if there is the possibility to calculate structural members made of SCC with the same design rules as for conventional concrete.For clarification of this question a data base with own and internationally published test results was created and evaluated regarding the relations between compressive strength, tensile strength, modulus of elasticity and bond properties. Furthermore creep and shrinkage deformations of SCC and vibrated concrete with the same source conditions were compared.In the course of the analysis of this data base it was shown that at same water-binder ratios the compressive strength and their time development of SCC and normal vibrated concrete are similar. On the other hand the splitting tensile strength of SCC achieves frequently higher values, while the modulus of elasticity is clearly lower. However these deviations are situated in the range of tolerance usual for vibrated concrete. Therefore it is possible to design structural members made of SCC with the same design rules than for normal concrete, but it should take into consideration that restrictions may be elaborated to assure an effective use of SCC. In connection with the higher tensile strength of SCC there is need for action, especially regarding the minimum amount of reinforcement.


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