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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Standards Subsctiption may be the perfect solution. Lift the cone vertically in 1 s to 3 s in one movement without interfering with the flow of concrete.
For further information on our subscription products go to Email: The result is an indication of the filling ability of self-compacting concrete. Your Alert Profile lists the documents that will be monitored.
This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by Januaryand conflicting national standards shall be withdrawn at the latest by January The deviation from flatness shall not exceed 3 mm at any point when a 13250-8 edge is placed between opposing sides and corners. Allow the filled cone to stand for not more than 30 s; during this time remove any spilled concrete from the baseplate.
Clean the table and the cone and dampen immediately prior to testing, but keep free from excess moisture.
The plate shall have a flat, smooth surface. The construction of the plate shall be such as to prevent distortion. The t time is a measure of the speed of flow and an indication of the relative viscosity of the self-compacting concrete. Measurement of the t time may be omitted if not requested. We have no amendments or corrections for this standard. Slump-test 3 Principle The slump-flow and t time is used to eb the flowability and the flow rate of self-compacting concrete in the absence of obstructions.
Fill the cone in one operation without any agitation or mechanical compaction, and strike off surplus from the top of the cone. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.
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. Proceed to Checkout Continue Shopping. The test is not suitable when the maximum size of the aggregate exceeds 40 mm.
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BS EN 12350-8:2010
Check the concrete spread for signs of segregation and report under item 8, f in a qualitative way, e. We have no 12350–8 history for this standard. If cement or concrete enters the eye, immediately wash it out thoroughly with clean water and seek medical treatment without delay.
Then measure the diameter of the flow spread at right angles to d to the fn 10 mm and record as d to the nearest 10 mm. 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 sb, measure the largest diameter of the flow spread and record as d1 to the nearest 10 mm.
BS EN – Testing fresh concrete. Self-compacting concrete. Slump-flow test
Prevent skin contact with wet cement bbs concrete by wearing suitable protective clothing. A list of organizations represented on this committee can be obtained on request to its secretary.
ENTesting fresh concrete, consists of the following parts: The fresh concrete is poured into a cone as used for the EN slump test. If the plate 123508 made from other materials, in-use performance test data shall be available which demonstrates long-term equivalence with steel plate.
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 According to the results from this EU project, it seems no single test method can completely cover all three key properties. It is based on the slump test described in Bbs The surface shall not be readily attacked by cement paste or be liable to rusting.
Owing to its significant advantages in the improvement of construction quality and working environment, self- compacting concrete SCC has been widely accepted by the construction owners. BSI is incorporated by Royal Charter. These should address three key properties: Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. 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 dn 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 has formally licensed such information to BSI for to succeed.
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. Add to Alert PDF. Need more than one copy? 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 the slump-flow.
All lines to be a maximum of 2,0 mm wide and 1,0 mm deep. Find out more about British Standards by visiting our website at commercial publication and use. 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 een the official versions. Already Subscribed to this document.