Agg-Net

The Aggregates & Recycling Information Network
Mobile Menu
From the organisers of

H

Hp

abbr. horsepower 

A practical unit of power approximately equal to 746 watts. 

Letter: 

Hydraulic Hammer

A percussion hammer powered by hydraulic fluid or pneumatic usually attached to an excavator and used for the purpose of breaking oversize but also used in demolition and excavation of weak rocks.

Letter: 
Glossary image: 
Hydraulic hammer

Haul Road

An internal road within a quarry upon which run the dumptrucks delivering excavated material from the face to the process plant

Letter: 
Glossary image: 
Haul road

Hydraulic Lime

Quicklime containing sufficient soluble silica, alumina, etc to enable it to set in the presence of water. Hydraulic lime is said to be emminently (classified by BS EN 459-1 as NHL 3.5 and NHL5), moderately (NHL 3.5) or feebly (below the strength for BS EN 459 classification for NHL) hydraulic.

Letter: 

Pages