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Broken rangework =
Stone masonry laid in
horizontal courses of
different heights, any
one course of which
may be broken (at intervals) into two or more
courses.
Burning the joint =
Mortar joint that is tooled after the mortar has
partially set and is hard, leaving dark streaks.
Cell =
Void in masonry unit with a cross-sectional area
greater than 1 ½ square inch.
Cement (portland cement) =
A mixture of materials (without aggregate)
which, when in a plastic state, possesses
adhesive and cohesive properties that harden in
place. The term is frequently misused, e.g.
“cement” block for concrete block.
Portland
cement =
A calcined combination of limestone
and clay, combined with an
aggregate
that reacts
chemically when water is added.
Centering =
A temporary structure upon
which the materials of a
vault or arch are supported
in position until the work
becomes self-supporting.
Clinker brick =
A very hard-burned brick whose shape is
distorted or bloated due to nearly complete
vitrification.