It supersedes BS EN which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee B//1. , DAY RATE: Sampling/Slump/Making/Storage BS EN /BS EN /BS EN /BS EN · Concrete Cube Coring Drilling, POA. Specifies a method for determining the consistency of fresh concrete by the slump test, which is sensitive to changes in the consistence of concrete and.
|Genre:||Health and Food|
|Published (Last):||18 March 2016|
|PDF File Size:||1.42 Mb|
|ePub File Size:||1.39 Mb|
|Price:||Free* [*Free Regsitration Required]|
Subject the concrete to a sufficient number of strokes per layer, typically 25 for concretes having a consistence equivalent to slump classes S1 and S2, in order to remove pockets of entrapped air but not the entrained air. It covers the preparation and filling of moulds, compaction of the concrete, levelling the surface, curing of test specimens and transporting test specimens. 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.
ENTesting fresh 13250-2 — Part 1: Worldwide Standards 1250-2 can source any standard from anywhere in the world.
You may find similar items within these categories by selecting from the choices below:. However, it was found in this programme that the use of an internal vibrator to compact specimens of air entrained fresh concrete should only be done with caution, if loss of entrained air is to be avoided.
Accept and continue Learn more about the cookies we use and how to change your settings. Wash wet concrete off the skin immediately.
This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. The use of a filling frame is recommended. For dated references, only the edition cited applies. The mould should preferably be attached to, or firmly held against the table. It is the constant aim of BSI to improve the quality of our products and services.
BS EN 12350-2:2009
Beyond these extremes the measurement of slump can be unsuitable and other methods of determining the consistency should be considered. It presents the UK view on standards in Europe and at the international level.
Shape, dimensions and other requirements for specimens and moulds 3 Apparatus 3. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover.
Depth of penetration of water under pressure.
BS EN 新拌混凝土试验.坍落试验 – MBA智库文档
Free to use BIM project management tool provides step-by-step help to define, manage and validate responsibility for information development and delivery at each stage of the asset life 1250-2 in level 2 BIM projects. NOTE 1 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 1235-02.
Your basket is empty. It shall be of appropriate dimensions such that the concrete can be enn re-mixed, using the square-mouthed shovel; 3. NOTE 1 In case of dispute, curing in bbs shall be the reference method. This document supersedes EN Specifies a method for determining the consistency of fresh concrete by the slump test, which is sensitive to changes in the consistence of concrete and corresponds to slumps between 10mm and mm.
NOTE 2 Laboratory tests have shown that great care is needed if loss of entrained air is to be avoided when using an internal vibrator. Click to learn more. This document Older versions.
Making and curing specimens for strength tests; Part 3: If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.
Click here to find out how to access this document.
If em or concrete enters the eye, b wash it out thoroughly with clean water and seek medical treatment without delay. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. Take precautions to avoid dry cement entering the eyes, mouth and nose whilst mixing concrete. Want access to British Standards? It is incorporated by Royal Charter.
BSI also holds the copyright, in the UK, of the publications of the international standardization bodies.
BS EN – Testing fresh concrete. Slump-test – BSI British Standards
Curing specimens in a closely regulated humidity chamber is recognised as being equivalent to curing in water. Information on standards BSI provides a wide range of information on national, European and international standards bw its Library and its Technical Help to Exporters Service.
After compaction of each layer, tap the sides of the container smartly with the mallet until large bubbles of air cease to appear on the surface and depressions left by the compacting rod or bar, are removed.