automatic control valve
A valve designed to control the flow of steam, water, gas, or other fluids, by means of a variable orifice […]
Glossary
Glossary
automatic circuit recloser
A self-controlled device for automatically interrupting and reclosing an alternating current circuit with a predetermined sequence of opening and reclosing,
Glossary
automatic batcher
A batcher for concrete which is actuated by a single starter switch, opens automatically at the start of the weighing
Glossary
autogenous welding
A type of welding in which the metals are usually united without the use of flux, 1.
Glossary
autogenous volume change
The change in volume produced by continued hydration of cement, exclusive of effects of external forces or change of water
Glossary
autogenous healing
A natural process of closing and filling cracks in concrete or mortar while it is kept damp.
Glossary
autoclaving cycle
1. In autoclave curing, the time interval between the start of the temperature- rise period and the end of the