Composition & Manufacture
Bradstone Masonry Walling is manufactured from naturally occurring aggregate, ordinary portland cement, inert colouring pigment and cast in moulds. The mould masters are developed from natural stone in order to reproduce the visual and textural characteristics of the original material. A large range of different masters are used for each block type to avoid noticeable repetition of particular profiles and textures.
Except for size tolerances, Bradstone Masonry Walling blocks comply with the general manufacturing requirements of BS 6457:1984 (specification for reconstructed stone masonry units) All Bradstone products made at Creagh Concrete are manufactured under the following procedures:
Quality ISO 9001:2000
Health & Safety OHSAS 18001
Environmental ISO 14001
The density of Bradstone Masonry Walling is in the range of 2075 to 2175 kg/m3 or 218 to 228 kg/m2 of facework (at 5% moisture content by volume)
30N/mm2 @ 28 days to BS 1881:Part 116:1983