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Shear test on welded fabrics

 

Reference of the ILC: ST17WF
References of test methods: ISO 15630-2
Frequency: Each year
Main characteristics Fc (Shear Force)
Other characteristics -
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:
Results are numerical. For each characteristic selected by the participant, 1 result shall be provided for each sample. The statistical computation will provide an assigned value with its attached uncertainty, values of standard deviations for repeatability, for reproductibility, limits of alerts for bias and repeatability of the participant, indiviual values for uncertainty of results of participants.
Number of samples per participant: 12
Product submitted to tests: Welded fabric for concrete
Type of samples: Crosses
Approximate dimensions of samples: ± Ø6-8x6-8 mm, Lxl 100x250 mm
Specific preparation to be performed by the participant:  None (other than possible necessity to adapt dimensions of the test specimen to the equipment of the participant)
                   
Special notice for this ILC: The tensile tests, the determination of geometry and the determination of linear mass are covered by the interlaboratory comparisons “Concrete reinforcing steels” (reference G17RS).