Tests on concrete prestressing steels

Presentation for participants

Reference of the ILC

G22PS

References of test methods

ISO 15630-3

References of test methods for which the ILC can indirectly provide an assessment of performance

ASTM A1061

 

 

 

These may be superseded standards, which some of the reference standards may have replaced, or EN or ASTM or ISO standards that are close but not exactly equivalent to the reference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.

       

Frequency

This ILC can be organised this year thanks to our preregistration procedure, which ensures an enough number of participants.

Main characteristics

Fm, Fp0,1, Agt, E, LM (Linear mass)

Other characteristics

P, hb

 

Caution The number of determinations may be low for the secundary characteristics, what may make inefficient the comparison between laboratories

       

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

1

Number of samples per participation

6

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

Prestressing strand for concrete

Type of samples

Strands

Approximate dimensions of samples

T5,2 - 12,9 mm - L=1100 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

*: For this program, longer samples can be supplied on request (please request at the moment of registration).

   

Time schedule:

 

Opening date of registrations

20/04/2021

Registration deadline

30/06/2022

Date of shipment of samples

05/09/2022

Start of the tests

15/09/2022

Deadline for carrying out the tests and providing the results

31/10/2022

Date of delivery of reports

15/12/2022

Note: After the deadline, registrations are only accepted within the limit of availability of samples

                       

Price (€)

500

Price if online payment (€)

400

Approximate weight (kg)

10