Why is slump test done

For professional concrete supply in the Hertfordshire area and beyond, look no further than EasyMix Concrete. Our experts know what makes the perfect concrete mix for your specific needs, and can offer both ready mixed and on-site options. For a truly convenient service, we have same- and next-day delivery options, so get in touch to discuss your project with our specialists. Why Is Concrete Slump Important? What is concrete slump?

Why do a concrete slump test? How to do a concrete slump test To perform a concrete slump test, first take a slump cone, also known as an Abrams cone, and fill it with your newly-mixed concrete.

Deciduous 1. Soft wood B. Conifer 2. Hard wood C. Endogenous 3. Eucalyptus D. Exogenous 4. Consider the following statements : 1 Tests on cement paste to determine initial and final setting times are done at normal consistency conditions.

Which of these statements are correct? High strength Portland cement 1. Should not be used with any admixture B. Super sulphated cement 2. Is extremely resistant to chemical attack C.

High alumina cement during 3. What is the concrete slump test? Why use a concrete slump test? How do you carry out a slump test? Place the cone on a flat, smooth, horizontal surface and stand on the footholds either side to ensure the cone is planted firmly on the ground 2. Fill the cone in three layers, using the steel tamping rod to compact — or tamp — the concrete after each layer in an even, uniform manner this should be done 25 times per layer.

Once the cone is filled, remove any overflowing concrete from the top, making sure the concrete fills the cone exactly to the top level. Remove any spilled concrete from the base of the cone, too. Lift the cone vertically, using a slow and steady motion until the cone is clear of the concrete.

Some specialized, yet relatively inexpensive, testing equipment is required prior to perform the slump test. It is important that the equipment being used complies with international standards such as:. The following items are not required to perform the test itself, but will make the testing easier and can increase efficiency:. Prior to starting the test, the mold, base plate and all testing materials should be clean and free of any remnants of prior testing.

The inside surface of both the base and the mold should be dampened before beginning the test to reduce surface friction. Find a flat surface for testing and place the mold on top of the base plate.

This area should also be free from vibrations. The testing should only be performed on fresh, newly mixed concrete for best results. Fill the mold with fresh concrete in three layers see images Each layer should be tamped uniformly, 25 times using the rounded end steel rod.

Once the cone is full, level the top by removing any excess concrete from the top of the cone.