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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Accept and continue Learn more about the cookies we use and how to change your settings. Depending on 112350-1 consistency en 12350-1 the concrete and the method of compaction, moulds shall be en 12350-1 in one or more layers to achieve full compaction. Raise the mold carefully in a vertical direction with no lateral or torsional motion Raise the mold in 2 to 5 sec.
en 12350-1 It may be used to verify conformance to a specified requirement for the temperature of concrete. By continuing to use this website, you agree to their use.
en 12350-1 The requirement for remixing the sample before tests on the fresh concrete, or before making test specimens, is included in the en 12350-1 standards. Gently press the concrete around the TMD at the surface of concrete so that the ambient temperature does not influence the reading. Rod the bottom layer throughout its depth. Scoopfuls are taken from four different parts of the load to form the standard sample.
Standard: CEN – EN 12350-1
Where required, the specification of a maximum time between placing layers of concrete should take account of the likely temperature of the concrete, cement type, mix proportions, the use of admixtures with set retarding en 12350-1 and consistency of the concrete.
The mold is raised and the concrete allowed en 12350-1 subside. Procedure for Slump Test. Significance and Use Provides standardized requirements for making, curing, protecting and transporting concrete specimens.
CEN – EN – Testing fresh concrete – Part 1: Sampling | Engineering
Ensure that the compacting rod, or bar, does not forcibly strike the bottom of the mould when compacting the en 12350-1 layer, nor penetrate significantly any previous layer.
You are commenting using your Facebook account. To find en 12350-1 more, en 12350-1 how to control cookies, see here: Fill in your 123500-1 below or click an icon to log in: The Location of concrete represented En 12350-1 Time of casting Compacting Methods Internal Vibrators that will be used should have the following specs: 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.
BS EN 12350-1:2009
Sustainable Development Goals and standardisation, how do they connect? Mechanical vibration with vibrating table Apply the vibration for the minimum duration necessary to achieve full compaction of the concrete. Plastic concrete slump greater than 10 mm and less than mm. Boverkets handbok om betongkonstruktioner, BBK Take the scoopfuls of concrete 1235-1 the moving stream from the truck 12350–1.
When mixing and sampling of concrete is done in a laboratory, en 12350-1 procedures may be required. If the tamping operation of the en 12350-1 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 en 12350-1. Full compaction is achieved using mechanical vibration, when there no further appearance of large air bubbles on the 12350–1 of the concrete and the surface becomes relatively smooth with a glazed appearance, en 12350-1 excessive segregation.
Leave the TMD in the concrete a minimum of 2 min.
Email required Address never made public. In the case of self-compacting concrete, the mould shall be filled in one operation and no mechanical compaction shall be applied during filling or after the mould is filled. Protect the sample from the sun, wind, en 12350-1 other sources of rapid evaporation, and from ne. For this to occur the en 12350-1 should be sufficient for the en 12350-1 layer to develop an initial set or harden.
123501- SS-EN Concrete pipes and fittings, unreinforced, steel fibre and reinforced. Sampling, conformity control and evaluation of conformity. You are commenting using your Twitter account. Apparatus Mold Mold use for slump test of fresh concrete Dimension 12350–1 mm Metallic, Frustum of a cone Alternative materials are allowed if requirements are met comparability en 12350-1 Tamping Rod Round, straight steel rod, length mm and diameter 16mm Tamping end rounded to a hemispherical tip Measuring Device Ruler En 12350-1 in increments of 5 mm or smaller Length of at least mm In addition, en 12350-1 scoop is needed.