scholarly journals Database of the Round-Robin Test on Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete organised by the RILEM Technical Committee 261-CCF

2021 ◽  
Author(s):  
Aitor Llano Torre ◽  
Pedro Serna Ros ◽  
Sergio Cavalaro ◽  
Wolfgang Kusterle ◽  
Sandro Moro ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Creep Behaviour ◽  
Round Robin ◽  
Technical Committee ◽  
Rilem Technical Committee ◽  
Fibre Reinforced Concrete ◽  
Round Robin Test

scholarly journals Recommendation of RILEM TC 261-CCF: test method to determine the flexural creep of fibre reinforced concrete in the cracked state

2021 ◽  
Vol 54 (3) ◽  
Author(s):  
A. Llano-Torre ◽  
P. Serna
Keyword(s):  
Creep Behaviour ◽  
Test Procedure ◽  
Test Method ◽  
Experimental Setup ◽  
Fibre Reinforced Concrete ◽  
Structural Elements ◽  
Round Robin Test ◽  
Multiple Stress ◽  
The World ◽  
Flexural Creep

AbstractTo date there is no clear consensus about how creep of cracked FRC structural elements should be considered. In recent years, different methodologies have been developed for multiple stress cases. The absence of a standardised methodology to evaluate flexural creep in the cracked state has hindered general comparisons and conclusions that could lead to significant advances in this topic. Since 2014, the study of the creep behaviour of cracked FRC has been coordinated by the RILEM TC 261-CCF. All the available creep methodologies were analysed in terms of procedure, equipment and results. A comprehensive Round-Robin Test (RRT) on the creep behaviour of cracked sections of FRC was proposed and undertaken by a total of 19 participant laboratories from 14 countries all over the world. The analysis and conclusions of the RRT results and the different methodologies provided the basis for this recommendation. This recommendation focuses on the test method to evaluate the flexural creep of FRC specimens in the cracked state. Guidelines on specimen production, detailed test equipment, experimental setup and test procedure as well as the definitions of the most relevant parameters are provided.

scholarly journals Experiences from RILEM TC 235-CTC in recommending a test method for chloride threshold values in concrete

2018 ◽  
Vol 3 ◽  
pp. 25-31 ◽  
Author(s):  
Luping Tang ◽  
Jens M Frederiksen ◽  
Ueli M Angst ◽  
Rob Polder ◽  
Maria Cruz Alonso ◽  
...  
Keyword(s):  
Input Parameter ◽  
Threshold Value ◽  
Technical Committee ◽  
Test Method ◽  
Rilem Technical Committee ◽  
Threshold Values ◽  
Round Robin Test ◽  
Chloride Threshold ◽  
Important Input ◽  
Life Predictions

Chloride threshold value is an important input parameter in service life predictions. There has been a need for a reliable method for testing this value in order to improve the understanding of basic factors influencing the corrosion initiation. For this reason RILEM technical committee (TC) 235-CTC was formed with the ultimate aim to recommend a suitable test method capable of delivering data with acceptable measurement uncertainty. During the TC’s life, a test method was proposed and a Round-Robin Test (RRT) was organised to evaluate it. Due to the unexpected results from the RRT, the ultimate aim of the TC was not reached. There were some experiences obtained from the TC’s work especially in designing the test method which are worthy for supporting future researchers continuing to search for a reliable test method for it. This technical letter presents the TC’s experiences.

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