Effect of specimen size on the compressive strength of ultra-high performance concrete

Author(s) : P. Riedel, T. Leutbecher
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. ResplendinoT.Ch.
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 251 - 260
Total Pages : 10
Language : English

Abstract: Using test specimens with different shapes and sizes may result in different values of concrete compressive strength, as known for normal-strength concrete (NSC) and high-strength concrete (HSC). Thus, appropriate conversion factors have to be established in order to provide necessary input for classification of UHPC and conformity test. Since retaining standard specimen sizes for UHPC may cause problems due to the limited capacity of present testing machines, test specimens with reduced sizes seem to be favourable.
Within the present study, cubes and cylinders made with NSC, HSC, and UHPC with different maximum grain size are tested. Special preparation of test specimens was established in order to minimise falsifying effects and to obtain reliable test results. Standard deviation and coefficient of variation of compressive strength document high accurateness and validity especially for the UHPC mixtures. Compared with NSC and HSC, the effect of specimen size and slenderness on the compressive strength is very small for UHPC.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00