BS EN 12350-8 PDF

BS EN 12350-8 PDF

BS EN BRITISH STANDARD National foreword This British Standard is the UK implementation of EN This publication does not. Find the most up-to-date version of BS EN at Engineering PREN Draft BS EN Testing fresh concrete. Part 8: Self- compacting concrete – Slump-flow test.

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The surface shall not be readily attacked by cement paste or be liable to rusting.

BS EN – Testing fresh concrete. Self-compacting concrete. Slump-flow test

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Fill the cone in one operation without any agitation or mechanical compaction, and strike off surplus from the top of the cone. A number of test methods including this test are available for testing fresh SCC.

This standard is one of a series concerned with bss fresh concrete. 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.

E worldwide for CEN national Members. If the document is revised or amended, you will be notified by email. Prevent skin contact with wet cement or concrete by wearing suitable protective clothing. All lines to be a maximum of 2,0 mm wide and 1,0 mm deep.

The result is an indication of the filling ability of self-compacting concrete. We have no amendments or corrections for this standard.

Nevertheless any test method should at least be correlated to the practical situation and give consistent results in order to provide reliable data for judgment of concrete workability. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

The resulting values for r and R are given in Tables 1 and 2. Users are responsible for its correct application. If cement or concrete enters the eye, immediately wash it out thoroughly with clean water and seek medical treatment without delay. This publication does not purport to include all the necessary provisions of a contract. It is desirable, especially in the case of new constituents or new concrete compositions, to test the consistence of fresh SCC before casting in place.

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It is based on the slump test described in EN The use of SCC in practical concrete construction is steadily increasing. Proceed to Checkout Continue Shopping. Then measure the diameter of the flow spread at right angles to d to the nearest 10 mm and record as d to the nearest 10 mm. When the cone is withdrawn upwards the time from commencing upward movement of the cone to when the concrete has flowed to a diameter of mm is measured; this is the t time.

Check the top surface for horizontality using the spirit level. The t time is a measure of the speed of flow and an indication of the relative viscosity of the self-compacting concrete. This standard is not included in any packages. Dimensions in millimetres Figure 1 — Baseplate Dimensions in millimetres Figure 2 — Example of dimensions of a steelweighted collar 5 Test sample The sample shall be obtained in accordance with EN For further information on our subscription products go to Email: Lift the cone vertically in 1 s to 3 s in one movement without interfering with the flow of concrete.

Slump-test 3 Principle The slump-flow and t time is used to assess the flowability and the flow rate of self-compacting concrete in the absence of obstructions. If the difference 1 2 between d and d is greater than 50 mm another sample shall be taken and the procedure repeated.

Allow the filled ej to stand for not more than 30 s; during this time remove any spilled concrete from the baseplate. Owing to its significant advantages in the improvement of construction 1235-8 and working environment, self- compacting concrete SCC has been widely accepted by the construction owners. You may delete a document from your Alert Profile at any time. Subscription pricing is determined by: The largest diameter of the flow spread of the concrete and the diameter of the spread at right angles to it are then measured and the mean is 123350-8 slump-flow.

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Since SCC has to give satisfactory in-situ properties perfect filling of the mould and embedment of the een, homogeneity and full compaction without vibration, the proper methods gs testing the fresh SCC are very important. The deviation from flatness shall not exceed 3 mm at any point when a straight edge is placed between opposing sides and corners. Clean the table and the cone and dampen immediately prior to testing, but keep free from excess moisture.

NOTE The collar allows the test to be carried out by one person. Please first verify your email before subscribing to alerts.

BS EN 12350-8:2010

The plate shall have a flat, smooth surface. If you find an inaccuracy or ambiguity within a British Standard or other The knowledge embodied in our standards has been carefully assembled in BSI publication please inform the Knowledge Centre. As the voice of the U. All the data, software and documentation set out in all British Standards and Information on standards other BSI publications are the property of and copyrighted by BSI, or some person or entity that owns copyright in the information used such as the international We can provide you with the knowledge that your organization needs standardization bodies and 122350-8 formally licensed such information to BSI for to succeed.

If the t time has been requested, start the stop watch immediately the cone ceases to be in contact with the baseplate and record the time taken to the nearest 0,1 s for the concrete to first touch the mm circle After the flow of concrete has stabilized without disturbing the baseplate or concrete, measure the largest diameter 1235-08 the flow spread and record as d1 to the nearest 10 mm.

Please first log in with a verified email before subscribing to alerts. Take precautions to avoid dry cement entering the eyes, mouth and nose whilst mixing concrete. If the plate is made from other materials, in-use performance test data shall be available which demonstrates long-term equivalence with steel plate.