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Martijn Hut

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Lab test
Environmental labs

Flatness index

A determination of flatness index in accordance with NEN-EN 933-3 serves to determine the percentage of flat pieces in a stone mixture. Too much flat material can cause fractures in the foundation. The flatness index therefore says something about the strength of a foundation material.

Process

For this test, the grain distribution is first determined. Grain sizes of less than 4 mm or more than 80 mm are not included in the test. Bar sieves are then used to determine the flatness index. Pieces with a specific length-to-thickness ratio fall through these bar screens during this test. For each sieve component, the percentage of flat pieces can be determined. At the end of the test, the total percentage of flat pieces of the sample is calculated.

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Process

Three steps to certification

  1. 1

    Sampling

    You take a sample of the material to be analysed. We then collect the samples by courier.

  2. 2

    Testing

    In our lab, we perform the civil or environmental engineering tests that are applicable to you.

  3. 3

    Reporting

    You receive the results of the tests in a clear and unambiguous report.

Leading companies in this service

Martijn Hut

Normec Laboratorium

Geldermalsen Netherlands

Lab test
Consultancy
Environmental labs
Normec Laboratorium is an RvA-accredited laboratory (L330) specializing in the testing and inspection of recycling aggregates, including sand, gravel, concrete, asphalt and rubble aggregates. With our accreditation, we guarantee reliable analyses and independent services for our clients. With our extensive expertise, we effectively establish and ensure the quality of building materials.
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