Limestone Duff Limestone The British Standards specification limits

The British Standards specification limits the surface area of the grains to be coated in cement

ordinary Portland Cement) and water to make concrete

The sand is free from organic humus and when dry will dessicate (dewater) many forms of harmful bacteria

In those instances where the bedding can not be kept dry then Cattle Bedding Sand is the preferred bedding medium

Most of the above criteria are achieved by using a sand of an appropriate angularity and particle size distribution so that a golf ball impacts to give a "fried egg" lie

Limestone Duff Limestone The British Standards specification limits0 4mm Limestone Dust is available for blinding surfaces, bedding for pipes cables etc, and sometimes as bedding layer for blocks or slabs. Used as a fine aggregate when blended with sand to make concrete.