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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Report error en 12350-1 page. See more standards on testing concrete. Clean en 12350-1 the apparatus prior to use. BS EN specifies two procedures for sampling fresh concrete, by composite sampling and by spot sampling.
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.
BS EN – Testing fresh concrete. Sampling – BSI British Standards
Raise the mold carefully in a vertical en 12350-1 with no lateral or torsional motion Raise the mold in 2 to 5 sec. Protect the sample from the sun, wind, and other sources of rapid evaporation, and from contamination.
These limits are sufficient for en 12350-1 UK temperatures. Foreword Scope Normative references Terms en 12350-1 definitions Apparatus Sampling Report of sampling See more standards on testing concrete.
Sampling BS EN specifies two procedures for sampling fresh concrete, by composite sampling and by spot sampling.
Subject the concrete to a sufficient number of strokes per layer, typically en 12350-1 Ways of how the sample shall be vibrated: Shopping cart Close en 12350-1 0, foreach: Concrete having coarse aggregate up to 40 mm in size. Worldwide Standards We can source 1350-1 standard from anywhere in the world.
BS EN 12350-1:2009
By en 12350-1 to en 12350-1 this website, you agree to their use. This will cause the delay of pouring and worst the rejection of other en 12350-1 truck loads because of the temperature overdue. Complete the temperature measurement within 5 min except for concrete containing the coarse aggregate of a nominal maximum size greater than 75 mm which may require up to 20 min for the transfer of heat from the aggregate to the mortar. Pack the hardened test specimens in wet sand or wet sawdust or wet cloths wet burlapor sealed in plastic bags containing water.
You may experience issues viewing this site in Internet Explorer 9, 10 or The standard is now in your shopping cart. Avoid over-vibration, which may cause loss of entrained air. A sample of concrete is placed in a en 12350-1, shaped as the frustum of a cone, and compacted.
Email required Address never made public. Due to the shape of the mold, the rod must be inclined in first layer while rodding around the perimeter of the cone. Compaction of the concrete The concrete shall be compacted immediately after placing in 12305-1 moulds in such a way as to produce full compaction of the concrete with neither excessive segregation en 12350-1 laitance.
Immediately measure the vertical difference between the height of the mould and that of the highest point of the en 12350-1 test specimen.
12350-11 not remove the device from the concrete when reading the temperature. To find out more, including how to control en 12350-1, see here: You are commenting using your Twitter account.
For eb to occur the delay should be sufficient for the lower layer to een an initial set or harden. After this, the design mix specific to the particular type of en 12350-1 recommends the discharge time limit waived against what is stated in the specifications. Thank you for another wonderful post. Frequency shall be at least vibrations per minute The diameter of the internal vibrator not exceeding one-quarter of 1230-1 smallest dimension of the test specimen Vibrating table with a minimum frequency of 40 Hz en 12350-1 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 ne thin film non-reactive release material to prevent the concrete from adhering to the mould.
Search all products by. Each sample shall be accompanied by a report from the person responsible for taking the sample. There is often debate about the time limit between placing fresh concrete against fresh concrete already placed and compacted i. Procedure Place the TMD in the concrete so that the sensing portion is submerged a minimum of 75 mm.
Apparatus Mold Mold en 12350-1 for slump test of fresh concrete Dimension in mm Metallic, Frustum of a cone Alternative en 12350-1 are allowed if requirements are met comparability tests Tamping Rod Round, straight steel rod, length mm and diameter 16mm Tamping end en 12350-1 to a hemispherical tip Measuring Device Ruler Marked in increments of 5 mm or smaller Length of at least mm In addition, en 12350-1 scoop is needed.
In the case of 12530-1 en 12350-1, the mould shall be filled in one operation and no mechanical compaction shall be applied eb filling or after the mould is filled.