Polyurethane Concrete Cube Testing by Merit.
Item: Polyurethane Concrete Cube Testing
Dimensions: 150mm x 150mm x150mm
Weight: 1300 gr
Concrete test moulds 150x150mm concrete cube mold, we can supply you.
Rugged one-piece molded plastic moulds, concrete test moulds, for consistent concrete cube specimens. Specimens are removed by injecting compressed air into the base.
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Place of Origin: TR
Item name: Concrete test moulds, concrete test cube,cube mould,concrete testing cube mould
Brand Name: MERIT
Model Number: CCM15
Usage: Cement Testing Machine
Comply: EN12390-1,,EN 12390-1
Shipping to OH, Ohio: OK
Estimated Shipping Weight lb (kg): 5lb (2kg)
Dimensions: 5.9×5.9in (150x150mm
The cubes are generally tested at 7 & 28 days unless specific early tests are required, for example to remove a concrete shutter safely prior to 7 days. Usually 1 cube will be tested at 7 days and 2 cubes at 28 days, however this may vary depending of the requirements, check the design first. The cubes are removed from the curing tank, dried and grit removed. The cubes are tested using a calibrated compression machine. This can be carried out internally by competent personnel or by a certified test house.
The cubes are tested on the face perpendicular to the casting face. The compression machine exerts a constant progressing force on the cubes till they fail, the rate of loading is 0.6 ± 0.2 M/Pas (N/mm²/s). The reading at failure is the maximum compressive strength of the concrete. BS EN 12390-2: 2009 / BS EN 12390-3:2009.
The concrete minimum compressive strength will be specified by the client/designer in a specific format. An example of this is given below:
The 40 is the compressive requirement of 40 N/mm² of a crushed 100m concrete core and the 50 is a compressive requirement of 50 N/mm² for a crushed concrete cube. Therefore using the method of testing using concrete cubes, the tested compressive strength should be compared to the second number.
Once the cubes have reached failure, the shape of the cube has been altered due to the compression. The failure shape can indicate whether it’s a satisfactory / unsatisfactory failure. The image below shows the various failures of a cube as show in BS EN 12390-3:2009.