It supersedes BS EN which is withdrawn.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.
|Published (Last):||27 August 2013|
|PDF File Size:||6.13 Mb|
|ePub File Size:||19.4 Mb|
|Price:||Free* [*Free Regsitration Required]|
The use of a filling frame is recommended. Ensure that the compacting rod, or bar, does not forcibly dn the bottom of the mould when compacting the first layer, nor penetrate significantly any previous layer. It supersedes BS EN This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. NOTE 1 In case of dispute, curing in water shall be the reference method.
BS EN 新拌混凝土试验.坍落试验 – MBA智库文档
Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Density of hardened 1235-2 Part 8: Learn more gs the cookies we use and how to change your settings. The Amber document status indicator indicates that some caution is needed when using this document – it is either: It is the constant aim of BSI to improve the quality of our products and services.
The sample shall be re-mixed, using the remixing container and square mouth shovel, before filling the moulds. A list of organizations represented on this committee can be obtained on request to its secretary.
A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. ENTesting fresh concrete — Part 1: Compressive strength of test specimens; 1235-2 4: It is incorporated by Royal Charter.
However, it was found in this programme that the use of an eb vibrator to compact specimens of air entrained fresh concrete should only be done with caution, if loss of entrained air is to be avoided. 1235-2 more standards on testing concrete. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies.
BS EN specifies a method for determining the consistence of fresh concrete by the slump test. It presents the UK view on standards in Europe and at the international level. 1250-2 as permitted under the Copyright, Designs and Patents Act no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means — electronic, photocopying, recording or otherwise — without prior written permission from BSI.
We use 122350-2 to make our website easier to use and to better understand your needs. EN Testing hardened concrete — Part 1: 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. Users of British Standards should make sure that they possess the latest amendments or editions. Depth of penetration of water under pressure.
BS EN 12350-2:2009
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The compaction of specimens in the moulds using hand tamping, vibrating table, or internal poker vibrator are accepted as equivalent.
Regular checks should be made that surfaces of specimens in the chamber are continuously wet. Contents of BS EN Compliance with a British Standard cannot confer immunity from legal obligations. If cement or concrete enters the eye, immediately wash it out thoroughly with clean water and seek medical treatment without delay.
Accept and continue Learn more about the cookies we use and how to change your settings. 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. Each layer enn be compacted by using one of the methods described in 5. The Red document status indicator indicates that the document is an old version The document has likely been withdrawn by the publisher, also the meta data presented here may be out of date as it is no longer being maintained by the editorial teams at NBS.
Curing specimens in a closely regulated humidity chamber is recognised as being equivalent to curing in water. Up-to-date lists and bibliographical references concerning 112350-2 national standards may be obtained on application to the CEN Management Centre or to any CEN member. This sb supersedes EN Click to learn more. Search all products by. Beyond these extremes the measurement of slump can be unsuitable and other methods of determining the consistency should be considered.
BS EN 12350-1/BS EN 12350-2/BS EN 12390-2/BS EN 12390-2
Customers who bought this product also bought BS EN Prevent skin contact with wet cement or concrete by wearing suitable protective clothing. Your basket is empty.
Making and curing specimens for strength tests; Part 3: Sampling ENTesting hardened concrete — Part 1: The slump test is sensitive to changes in the consistence of concrete, which correspond to slumps between 10 mm and mm. Flexural strength of test specimens; Part 6: 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.
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. 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.
NOTE 2 Further guidance on methods of compaction for concretes having different consistencies or cast in different sizes of moulds, may be given in national annex NA. The vibrator should be vertical and not allowed to touch the bottom or sides of the mould.
Avoid over- vibration, which may cause loss of entrained air. For undated references, the latest edition of the referenced document including any amendments applies.