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.
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BS EN – Testing fresh concrete. Sampling (British Standard)
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.
Raise the mold carefully in a vertical direction with no lateral or torsional motion Raise the mold in 2 to 5 sec. Self-compacting concrete – L-box 12350–1 in preparation ; Part EN Testing fresh concrete Part 1: You may find similar items within these 12350- by selecting from the choices below:. Remember me on this computer. Please first log in with a verified email before subscribing to alerts. NOTE The requirement for remixing the sample before tests on the fresh concrete, or before making test specimens, is included in the relevant standards.
If cement or concrete enters the eye, immediately wash it out thoroughly with clean water and seek medical treatment without delay.
Mechanical vibration using Compacting with an internal vibrator Apply the vibration for the minimum duration necessary to achieve full compaction of the concrete. Worldwide Standards We can source any standard from anywhere in the world.
If the 1250-1 operation of the top layer results in subsidence of the concrete below the top edge of the mould, add more concrete to keep an excess above the top of the mould at all times. Pack the hardened test specimens in wet sand or wet sawdust or wet cloths wet burlapor sealed in plastic bags containing water. This document is not a European Standard. This should be taken into account in deciding the time when tests are carried out or specimens made.
Take the smart route to manage medical device compliance. Testing fresh concrete -Part 1: The report may include: The place else may anybody get that type of 123501- in such a perfect means of writing?
You are commenting using rn Facebook account. Self-compacting concrete – V-funnel test in preparation ; Part Significance and Use Provides standardized requirements for making, curing, protecting and transporting concrete specimens. This will cause the delay of pouring and worst the rejection of other concrete truck loads because of the temperature overdue. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked 123501.
Frequency shall be at least vibrations per minute The 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 1235-01 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.
Email 123350-1 Address never made public. The requirement for remixing the sample before tests on the fresh concrete, or before making test specimens, is included in the relevant standards. NOTE The requirement for remixing the sample before tests on the fresh concrete, or before making test specimens, is included in the relevant standards. Difference ne the two samplings — Composite sampling is more diverse as it is the representative of the whole truck load.
Testing fresh concrete -Part 1: Sampling | Daniel Stănică –
Transport of test specimens Avoid loss of moisture and deviations from the 13250-1 temperature at all stages of transport. The time for this to occur depends on the concrete temperature, cement type, mix proportions, the use of admixtures with set retarding properties and consistency of the concrete.
21350-1 Extended delays in placing can lead to a significant loss of consistency with time making it impossible to place with satisfactory compaction. Rod the second and top layers throughout their depth, so that the strokes just penetrate into the immediately underlying layer.
Clean all the apparatus prior to use.
BS EN 12350-1:2009
Immediately measure the vertical difference between the height of the mould and that of the highest point of the slumped test specimen. Move the scoop around the perimeter of the mold to ensure even distribution of material and minimize segregation. Concrete cubes at the site Marking The test specimens shall be marked clearly and indelibly, without damaging the specimen using a cub tag that contains the information related to the specimen Casting date, ticket number, specimen ID, location of sampling….
BS EN specifies two procedures for sampling fresh concrete, by composite sampling and by spot sampling. Materials handling, Test specimens, Sampling methods, Concretes, Samples, Cement and concrete technology.