Relaxation test on concrete prestressing steels
Presentation for participants
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RE24PS |
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References of test methods |
ISO 15630-3 |
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References of test methods for which the ILC can indirectly provide an assessment of performance |
ASTM A1061 |
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These may be superseded standards, which some of the reference standards may have replaced, or EN or ASTM or ISO standards that are close but not exactly equivalent to the reference standards. |
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Frequency |
This ILC can be organised this year thanks to our preregistration procedure, which ensures an enough number of participants. |
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Main characteristics |
ρ = ΔFo/Fo after loading during 1 min, 2 min, 4 min, 8 min, 15 min, 30 min, 60 min, 2h, 4h, 6h, 24h, 48h, 96h, 120h |
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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. |
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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. |
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Number of products submitted to tests |
1 |
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Number of samples per participation |
4 |
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Max number of operators per participation |
1 (it is necessary to order as many participations as there are participating test operators) |
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Product submitted to tests |
Prestressing strand for concrete |
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Type of samples |
Strands |
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Approximate dimensions of samples |
T5,2 - 12,9 mm - L=1100 mm* |
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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) (2 test pieces per supplied sample) |
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Special notice for this ILC |
*: For this program, longer samples can be supplied on request (please request at the moment of registration). |
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Time schedule: |
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Opening date of registrations |
30/11/2023 |
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Registration deadline |
15/03/2024 |
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Date of shipment of samples |
31/05/2024 |
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Start of the tests |
03/09/2024 |
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Deadline for carrying out the tests and providing the results |
25/10/2024 |
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Date of delivery of reports |
06/12/2024 |
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Note: After the deadline, registrations are still possible. Contact us at ilc@compalab.org for more information. |
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Price (€) |
425 |
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Price if online payment (€) |
340 |
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Approximate weight (kg) |
30 |
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