Find the most up-to-date version of CEN – EN at Engineering Testing fresh concrete – Part 1: Sampling – SS-EN This European Standard specifies two procedures for sampling fresh concrete, by composite. 1 Apr This British Standard specifies two procedures for sampling fresh concrete which are implemented by composite sampling and by spot.
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CEN – EN – Testing fresh concrete – Part 1: Sampling | Engineering
Testing fresh concrete – Part 1: In some big projects, imagine the time consumed to perform the composite sampling when there is a lot of concrete truck mixers in en 12350-1 at the checkpoint area. Report from the en 12350-1 includes: Fill in your details below or click an icon to log in: Rod the second and top layers throughout their depth, so that the strokes just penetrate into the en 12350-1 underlying layer. What is the frequency of Sampling of Concrete? Thank you for another wonderful post.
Contents of BS EN Both en 12350-1 will agree to the specific time limit as substantiated from the concrete design mix. Scoopfuls are taken from four different parts of the load to form the standard sample. Mechanical vibration with vibrating table Apply the vibration for the minimum duration necessary to achieve full compaction of the concrete.
Surface leveling Remove the excess concrete above the upper edge of the mould using the steel trowel or float and carefully level the surface. Worldwide Standards We can source any standard from anywhere in the world. Boverkets handbok om betongkonstruktioner, BBK Transport of test specimens Avoid loss of moisture and deviations from the required temperature at en 12350-1 stages of transport.
Full compaction is achieved using mechanical vibration, when there no further appearance of large air bubbles on the surface of the concrete and the surface becomes relatively smooth with a glazed appearance, without excessive segregation.
Read more about SIS Subscriptions. The mold is raised and the concrete allowed to subside. Email required Address never made public. Procedure Place the TMD in the en 12350-1 so that the sensing portion is submerged a minimum of 75 mm. en 12350-1
Compaction of the concrete The en 12350-1 shall be compacted immediately after placing in the moulds in such a way as to produce full compaction of the concrete en 12350-1 neither excessive segregation nor laitance.
Sustainable Development Goals 1235-1 standardisation, how do they connect? Composite samples are not required if the only purpose of obtaining the sample is to determine the temperature.
Protect the sample from sun, wind, and other sources of rapid evaporation, and from contamination. As the load is discharged, sampling should be taken from the whole width and depth not just the top part. This website is best viewed with browser version of en 12350-1 to Microsoft Internet Explorer 8 or Firefox 3.
Foreword Scope Normative references Terms and definitions En 12350-1 Sampling Report of sampling See more standards on testing concrete. Subscribe on standards – Read more. You may find wn items within these categories by selecting from the choices below:.
NOTE The requirement en 12350-1 remixing the sample before tests on the fresh concrete, or before making test specimens, is included in the relevant standards.
Fill the mold in three layers of en 12350-1 equal height. Subject the concrete to a sufficient number of strokes per layer, typically Gently press the concrete around the TMD at the surface of concrete so en 12350-1 the ambient temperature does not influence the reading. This will cause the delay of pouring and worst the rejection of other concrete truck loads because of the temperature overdue.
Ideally placing subsequent layers of fresh concrete should be undertaken as soon as practical to enable a fully compacted and monolithic element. Procedure for Slump Test Apparatus being readied for 12350–1 test en 12350-1 Fill the mold in three layers of approximately equal height.
To find out more, including how to control cookies, see here: What is en 12350-1 standard? Frequency shall be at least vibrations per minute The diameter of the internal en 12350-1 not exceeding one-quarter of the smallest dimension of the test specimen Vibrating table with a minimum frequency of 40 12350- 2 cycles per minute Compacting rod or bar Preparation and filling of the moulds Eb filling the mould, cover the inner surface of the en 12350-1 with a thin film non-reactive release material to prevent the concrete from adhering to the mould.
BS EN 12350-1:2009