How to lay a concrete driveway.
Concrete mix for driveway uk.
As a guide watch the ridges as the top of the heap is chopped.
6 parts pre mixed ballast.
If it looks like a watery slurry or the ridges don t stand up the mix is too wet.
For foundations a mix of 1 part cement to 3 parts sand to 6 parts aggregates can be used.
Concrete mix ratio for a c20 and c20p portland mix.
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.
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.
In pre mix concrete the aggregate is already mixed with the cement.
If the depressions between the chops fill with cement slurry the mixture is okay.
For driveway paving the slump or stiffness of the mix should be about 4 inches.
If you are using premixed ballast then.
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.
2 parts fine aggregate sand 4 parts coarse aggregate.
A mix which has the right amount of water is smooth and consistent not over wet and runny nor dry and crumbly.
For information on testing fresh concrete see air contentand density unit weight.
Vapour barrier paint is typically sprayed on the surface but can also be applied with a paint roller and brush.
Laying a driveway is one of the most popular uses for ready mix concrete properly done a finished concrete driveway will be attractive strong and long lasting but getting to that point will take a fair bit of preparation and patience.
A driveway 6 metres long by 3 metres wide and 100mm thick will require roughly 2 cu.
For large driveways you should certainly consider using ready mix concrete which can be delivered by lorry.
The proportions of materials for a c20 and c20p p portland cement concrete mix are.
For example a simple sand and cement mix should be at least 3 part sand the aggregate to one part cement.
