EXTENDED ROUND ROBIN TESTING PROGRAM OF COST ACTION TU1404 – LESSONS LEARNED FROM THE INITIAL EXPERIMENTAL PHASE

Author(s): Marijana Serdar, Stéphanie Staquet, Dirk Schlicke, Emmanuel Rozière,
Gregor Trtnik, Sree Nanukuttan, Miguel Azenha
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: 651-664
Total Pages: 14
Language : English

Abstract: The extended round robin testing program (RRT+) is used in the Working Group 1 of the
COST Action TU1404 as a fundamental mechanism: i) to validate advanced, non-
standardised experimental techniques for testing cement-based materials and structures,
ii) to benchmark different sustainable variations of concrete mixes prepared with mineral
admixtures, recycled materials and/or by-products, and iii) to obtain input data for a range of
concrete properties which could serve designers and engineers to better predict lifespan,
durability, and serviceability of concrete structures. With a total of 45 laboratories from
Europe, Japan and Canada, performing over 50 test methods on the same concrete mix, it
presents one of the most extensive initiatives for joint testing of cement-based materials. The
RRT+ is divided into two phases: the initial and main experimental phases. During the initial
phase, an ordinary concrete mix is prepared using the same constituting materials and
following identical preconditioning, preparation, conditioning and test procedures. Even
though the framework is identical and potential external causes of deviations are limited,
concrete is prepared in different laboratories and some scatter in results can be expected. This
paper describes the observations during the initial experimental phase and discusses methods
including statistical analysis performed to understand the scatter and results obtained.

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