Concrete Mix For Driveway Uk

For large driveways you should certainly consider using ready mix concrete which can be delivered by lorry.

Concrete mix for driveway uk.

Concrete paint or vapour barrier paint is an inexpensive option for a driveway resurfacing project and can be purchased in a variety of colours and styles. Concrete mix ratio for a c20 and c20p portland mix. If it looks like a watery slurry or the ridges don t stand up the mix is too wet. 6 parts pre mixed ballast.

In pre mix concrete the aggregate is already mixed with the cement. How to lay a concrete driveway. Slumps greater than 5 inches should be avoided warns pca. The proportions of materials for a c20 and c20p p portland cement concrete mix are.

Vapour barrier paint is typically sprayed on the surface but can also be applied with a paint roller and brush. As a guide watch the ridges as the top of the heap is chopped. A mix which has the right amount of water is smooth and consistent not over wet and runny nor dry and crumbly. An overly wet mix can lead to finishing problems and a weak surface.

A driveway 6 metres long by 3 metres wide and 100mm thick will require roughly 2 cu. For foundations a mix of 1 part cement to 3 parts sand to 6 parts aggregates can be used. 2 parts fine aggregate sand 4 parts coarse aggregate. If the depressions between the chops fill with cement slurry the mixture is okay.

There are now several companies across the country which are happy to deliver fairly small amounts of ready mix. In this case both the sand and gravel are the aggregate. A strong concrete mix would be something like 1 3 5 cement sand coarse gravel. In terms of the ratio for concrete it depends on what strength you are trying to achieve but as a general guide a standard concrete mix would be 1 part cement to 2 parts sand to 4 parts aggregates.

For information on testing fresh concrete see air contentand density unit weight. For example a simple sand and cement mix should be at least 3 part sand the aggregate to one part cement.