Set time attempt
The setting time test , also known as the Vebé test , is a test method for assessing the consistency of fresh concrete . The test procedure is in Europe by the standard regulated EN 12350 Part. 3 In Germany, the use of the experiment is rather uncommon.
In order to assess the consistency, this test determines how long it takes for fresh concrete to flow from a truncated cone- like shape into a cylindrical shape by shaking .
Experimental setup and implementation
To determine the setting time (also called Vebé time), fresh concrete is placed in a truncated cone shape inside a cylindrical container with a diameter of 24 cm and a height of 20 cm standing on a vibrating table. The shape is 30 cm high, the lower opening has a diameter of 20 cm, the upper opening has a diameter of 10 cm. It thus resembles the truncated cone shape of the setting test . The fresh concrete is poured into this form in three layers, each of which is compacted with 25 impacts. After removing the truncated cone shape, a transparent disc is placed on the concrete cone and the vibrating table is switched on. The concrete settles through the compaction energy and slowly flows into the cylindrical shape. The setting time is the time from switching on the vibrating table to the point in time at which the pane is completely wetted by the concrete.
literature
- German Institute for Standardization (publisher): DIN EN 12350-3: Testing of fresh concrete, part 3: Vebé testing . August 2009.
Individual evidence
- ↑ Testing of fresh concrete. HeidelbergCement, accessed on August 19, 2013 .