Fatigue test on concrete reinforcing steels

Presentation for participants

Reference of the ILC


References of test methods

ISO 15630-1



Each year


1 - Participants interested in participating pre-register using the registration form. No invoicing is made for this pre-registration;

2 - When at least 10 potential participants have pre-registered, CompaLab asks each of these pre-registrees to confirm their willingness to participate and what are the characteristics for which they commit to provide results;

3 - If at least 8 participants confirm their intention to participate, the CIL organisation concerned is engaged.

Main characteristics

N (Number of cycles before failure for a given σmax and a given Δσ)


Determination of the assigned values (“true values” for each characteristic)

By statistical computation of the totality of the results with possible selection on competence criteria (accreditation, validation by a reference body, quantity of tests performed in the year), test to detect possible collusion, merging of results not obtained in reproductibility conditions, suppression of technically unvalid results.

Type of statistical computation

For numerical results, the statistical computation will provide an assigned value with its attached uncertainty, values of standard deviations for repeatability and reproductibility, limits of alerts for bias and repeatability of the participant, indiviual values for uncertainty of results of participants.

Number of products submitted to tests


Number of samples per participation


Max number of operators per participation

1 (it is necessary to order as many participations as there are participating test operators)

Product submitted to tests

Hot rolled reinforcing steel

Type of samples


Approximate dimensions of samples

2x Ø16-25x780 mm

Specific preparation to be performed by the participant

None (other than possible necessity to polish the test specimens or to adapt their dimensions to the equipment of the participant)


Special notice for this ILC

Results have to be numerical in order to be statistically handable. The number of samples is set up at 9, in order to make the estimation of standard deviation of results statistically relevant. So, to avoid tests to last too long and avoid costs of tests too high:
1. loading values will be severe but, however, will remain reasonably close to usual conditions;
2. a special statistical procedure is used so that tests on samples showing the longest life may be stopped before rupture, saving an important amount of testing time.


Price (€)


Price if online payment (€)


Approximate weight (kg)