Ballast

Our Aggretages for London

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Ballast

Ballast Supplier

Ballast refers to a mixture of sand and gravel that is used to make concrete. Generally, the size of the grains/stones vary from 0.1mm upwards to 20mm. It is nomally produced using a mixture of sharp sand and 4-20mm pea shingle.

Concrete is a mixture of sand, ballast and cement that sets hard within a few hours of being mixed with water. The proportions of ballast, cement and water are varied to give concretes of different strengths and workability. If less water is used in the initial mix, the stronger the end-product of concrete will be when set.

 

Ballast use and delivery

Ballast is suitable for various projects and this includes: mixing concrete for foundations and footings, making a concrete slab for your conservatory/shed/garden or extension. This aggregate can also be used for foundations for garden walls, concreting in fence posts and making paths. As a general guide for concrete mix use 1 part cement to 6 parts ballast. Where everything is dry, a water to cement ratio of 0.55 should be used. When your concrete is mixed and ready to use it should be able to support itself, almost fully, in a heap on a shovel.

 

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