Perryfield shelly

//Perryfield shelly
Perryfield shelly 2017-06-27T15:16:24+00:00
Portland limestone perryfield shelly whitbed

Portland limestone Perryfield shelly whitbed

Perryfield shelly has a slightly open texture and is described as a shelly stone. It does not have the openness of Roach.

Exceptionally durable due to the high shell content and as such can be used in more exposed areas. The high shell content increases its durability but reduces its suitability for heavily detailed or carved work. Instead the Portland stone is used for ashlar, paving and copings.

We have sufficient extracted stock for most projects.

Sizes Available: – Maximum Typical Range

Bed Height: 600mm to 1,100mm

Length: 800mm to 2,300mm

Technical data

From 0.40 m³ to 3.8 m³
Please contact us requesting relevant CE testing information.

Perryfield shelly whitbed CE test report

Please contact us requesting relevant specification clauses
Principally formed from micritic ooids in a sparse micritic matrix, the stone contains many shell fragments in the size range 1mm to 5mm. Some compaction of the ooids is present but the matrix exhibits moderate intergranular porosity with interlinking of pores. No clay or other minerals are apparent.
Please see testing data for values.

Perryfield shelly whitbed exhibits a low saturation coefficient, good strength and good resistance to salt. Test results indicate that it is capable of a service life in excess of 60 years providing that exposure conditions are not subject to severe frosts or high concentrations of sulphur dioxide and that good stone detailing methods are employed to give best protection from water ingress.

It is estimated that the likely weathering rate of this stone would lie between 1mm to 3mm per 100 years in normal exposure conditions.

Perryfield shelly whitbed is suitable for flooring. It does contain areas that slightly open in texture which can be floated over with a grout when fixing should it be necessary.
Overall, should be suitable for use in most aspects of construction including flooring, paving, load bearing masonry and cladding including areas where a long service life is needed or where high salt concentrations are expected.

Variation

Please note that limestone is a natural material and is subject to variations in colour, pattern and texture. It is therefore essential that you visit our quarries to select the range required. Only full bed height samples, each numbered and acknowledged by all parties involved, could be considered contractual.