Page 49 - Haddonstone
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Glossary
Acid Etching Process of applying a Curing The process of hydrating the
solution of hydrochloric or muriatic acid Portland Cement in cast stone to a
to the exposed surface of cast stone in specified age or compressive strength.
order to remove the laitance from the
aggregates, thus achieving a fine grained Dowel Round (usually non-corrosive)
finish which simulates natural cut stone. metal pin used in anchoring and aligning
cast stone.
Anchor Metal device used for securing
cast stone to a rigid structure. Dressings Brickwork or stonework
flanking a wall opening or adjacent
Arris The sharp edge at the junction of to a corner, treated distinctly from the
two adjacent surfaces of a cast stone unit. remainder of the wall face.
Ashlar Masonry constructed of stones to Drip Continuous groove cut or cast into
a rectangular shape and laid in courses, the bottom of the projecting edge of cast
as opposed to rubble work which is stone in order to disrupt the path of the
uncoursed masonry of random shaped water to the wall below.
stones.
Efflorescence Also known as lime bloom,
Backing Mix Concrete, normally sand, may appear as a white deposit covering
gravel, and grey cement: used for the part or all of the surface of products
unexposed portion of cast stone. containing cement. It is a temporary,
naturally occurring phenomenon
Bed Joint The joint which the stone sits that disappears as a result of normal
on. It is normally filled with mortar. weathering.
Capping Cast stone unit intended to Exposed Face Any face which is not
protect the top of a wall, balustrade or bedded or otherwise protected in the
parapet as well as adding aesthetic value works (e.g. with mortar or bitumen).
to the wall, but not necessarily designed Visual Faces are Exposed Faces but not
to shed rainwater clear of the surfaces necessarily vice versa.
beneath.
Facing Mix Materials used for both
Cast Stone Any material manufactured homogenous cast stone and, when a
with aggregate and a cementitious backing mix is used, the visual face of
binder that is intended to resemble the cast stone.
appearance of, and be used in a similar
way, to quarried stone. Cast stone is either Fibre Reinforced Cast Stone
homogenous throughout or consists of a A wet cast manufacturing process
facing mix and backing mix. incorporating alkali-resistant extruded fibre
reinforcement. Allows thin and lightweight
Colouring A process of (or material sections to be produced.
used for) tinting the hue of cast stone. It
is normally achieved through the use of Fines Aggregates passing 6mm sieve.
aggregates or inorganic iron oxide pigments.
Finish Final exposed surface of cast
Coping Cast stone unit intended to protect stone. It is independent of colour, but it will
the top of a wall, balustrade or parapet as control the colour intensity. Acid etching is
well as adding aesthetic value to the wall, a cast stone finish.
and designed to shed rainwater clear of
the surfaces beneath. Full Bed A horizontal joint completely filled
with mortar.
Crazing A series of hairline cracks,
normally less than one millimetre in depth, Grout Mortar of pouring consistency.
in the outer surface of a concrete product.
Crazing does not normally affect the life of Head A unit spanning an opening but not
a concrete product. necessarily intended to carry the weight of
the construction above.
