Page 38 - Haddonstone

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8.1 Scope

This Standard covers the materials that can be used, the acceptable tolerances and
minimum performance in terms of strength and durability for cast stone.

8.2 Definition

For the purposes of this Standard the following definitions apply:
Cast stone: Any material manufactured with aggregate and a cementitious binder that is
intended to resemble the appearance of, and be used in a similar way to natural stone. Cast
stone is either homogenous throughout or consists of a facing material and a backing material.
For other definitions of concrete materials, reference should be made to BS 6100.

8.3 Materials

8.3.1 Binders and Binder Constituents

Cast stone shall be made by using one of the following binders complying with the
appropriate standard:

BS EN 197-1: 2000 Specification for Portland cement
BS EN 197-4: 2004 Specification for low early strength blastfurnace cements
BS 4027: 1996 Specification for sulphate-resisting Portland cement

The binder shall be used either by itself or, for cements complying with BS EN 197-1, in
combination with one of the following;

BS EN 15167-1: 2006 Ground granulated blast furnace slag for use in concrete,
mortar and grout
BS EN 450: 2005 Fly ash for concrete

8.3.2 Aggregates

Aggregates used, apart from grading requirements, shall conform to the appropriate
standard as follows:

BS EN 12620: 2002 Aggregates for concrete
BS EN 13055: 2002 Lightweight aggregates for concrete, mortar and grout
BS EN 15167-1: 2006 Ground granulated blast furnace slag for use in concrete,
mortar and grout
BS EN 450: 2005 Fly ash for concrete
BS 3892-2: 1996 Pulverised-fuel ash to be used as Type 1 addition