Tests on admixtures for concrete

Presentation for participants

Reference of the ILC


References of test methods

EN 480-6  EN 1767  ASTM E1252  EN 480-8  EN 480-10  EN 480-12



For this ILC, there is a risk that the number of registrations is low. To ensure an enough number participants, a pre-registration procedure is put in place, as follows:


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

Infrared analysis (identification and qualitative evaluation of the 10 main absorption peaks), X (conventionnal dry material content), wcl (water soluble chloride content), Na₂O, K₂O contents


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

10 (For this CIL, the type of test and sample size allow to provide results determined by several different operators and by several different methods)

Product submitted to tests

Admixture for concrete

Type of samples


Approximate dimensions of samples

1 l

Specific preparation to be performed by the participant

Extraction of a test specimen


Price (€)


Price if online payment (€)


Approximate weight (kg)