DRAFT. prEN August ICS Will supersede EN English Version. Testing fresh concrete – Part 1: Sampling and common. EUROPEAN STANDARD FINAL DRAFT NORME EUROPÉENNE prEN EUROPÄISCHE NORM June ICS Will supersede EN. BS EN Testing fresh concrete. Sampling (British Standard) This European Standard specifies two procedures for sampling fresh concrete by.
|Published (Last):||22 December 2006|
|PDF File Size:||7.59 Mb|
|ePub File Size:||2.47 Mb|
|Price:||Free* [*Free Regsitration Required]|
EN Testing fresh concrete Part 1: If a falling away or shearing occurs, disregard test and make a new test using another portion of the sample. You may find similar items within these categories by selecting from een choices below:. 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.
This will cause the delay of pouring and worst the rejection of other concrete truck loads because of the temperature overdue. Metallic, Frustum of a cone Alternative materials are allowed if requirements are met 112350-1 tests Tamping Rod Round, straight steel rod, length mm and diameter 16mm Tamping end rounded to a hemispherical tip Measuring Device Ruler Marked in increments of 5 mm or smaller Length of at least mm In addition, a scoop is needed.
Extended delays in 12305-1 can lead to a significant loss of consistency with time making it impossible to place with satisfactory compaction. Click to learn more. Degree of compactability; Part 5: Add to Alert PDF.
This test is considered applicable to: Fill the mold in three layers of approximately equal height. Records shall be kept to ensure the traceability of the specimen from sampling to testing. Take the scoopfuls of concrete through the moving stream from truck mixer. We have no amendments or corrections for this standard.
Testing fresh concrete -Part 1: Sampling | Daniel Stănică –
The most enn method used in the sampling for casting with large volume of concrete is the spot sampling which is less time intensive due to the rate of pouring. Wash 112350-1 concrete off the skin immediately. You are commenting using your Twitter account. What is the frequency of Sampling of Concrete? Help Center Find new research papers in: Self-compacting concrete – Slump-flow test in preparation ; Part 9: Deposit the increments into the container s. These limits are sufficient for normal UK temperatures.
Take care when the concrete is taken from the container s to ensure that no more than a light covering of mortar is left adhering to the container s. The report sn include: You are commenting using your Facebook account. Sampling of fresh concrete at site. Sampling BS EN specifies two procedures for sampling fresh concrete, by composite sampling and by spot sampling.
Enter the email address you signed up with and we’ll email you a reset link. This document will supersede EN Protect the sample from the sun, wind, and other sources of rapid evaporation, and from contamination.
BS EN 12350-1:2009
Clean all the apparatus prior to use. Usually, especially for big projects where a large quantity of concrete is cast, both parties come up with the designed mix and validated through trial mixes to compensates for this particular problem. Worldwide Standards 12350- can source any standard from anywhere in the world. The report shall include: Log In Sign Up.
Move the scoop around the perimeter of the mold to ensure even distribution of material and minimize segregation. Apparatus Mold Mold use for slump test of fresh concrete Dimension in mm Metallic, Frustum of a cone Alternative materials are allowed if requirements are met comparability tests Tamping Rod Round, straight steel rod, length mm and diameter 16mm Tamping end rounded to a hemispherical tip Measuring Device Ruler Marked in increments of 5 mm or smaller Length of at least mm In addition, a scoop is needed.
The elapsed time shall not exceed 15 min. Scope This ej specifies methods for making and curing test specimens for strength tests.
You dn download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. This European Standard specifies two procedures for sampling fresh concrete, by composite sampling and by spot sampling.
As the voice of the U. Deposit the increment s in the container.
Sampling of Freshly Mixed Concrete at the Field (BS EN ) – QA/QC Construction
Contents of BS EN The first school of thought is rather straightforward: Frequency shall be at least vibrations per minute Wn diameter of the internal vibrator not exceeding one-quarter of the smallest dimension of the test specimen Vibrating table with a minimum frequency of 40 Hz 2 cycles per minute Compacting rod or bar Preparation and filling of the moulds Before filling the mould, cover the inner surface of the mould with a thin film non-reactive release material to prevent the concrete from adhering to the mould.
You may experience issues viewing this site in Internet Explorer 9, 10 or