Gabbro refers to a large group of dark, coarse-grained, intrusive mafic igneous rock chemically equivalent to Basalt. Because of its special hardness and strength, chemical and physical properties, Gabbro is a very suitable material for a wide range of construction and engineering projects.

With a deep knowledge of the technological processes and properties of Gabbro, United Quarries produces a range of standard aggregate and rock products.

Standardized Production According to British Standards

 Name of product  Sizes
 Aggregate  0-5 mm,  5-10mm,
 10-20 mm, 20-25 mm, 20-32mm, 20-37.5mm, 20-42 mm
 Road-Base  0-37.5 mm (grade A asphalt)
 0-42 mm
 0-50 mm
 Special sizes – subject to volume.
 Sub-Base  0-42 mm
 0-50 mm
 Special sizes – subject to volume.
 BallastSub-Ballast  20-42 mm, 25-63 mm0-20 mm
 Under Layer Rock  10-60 mm,40-400 mm,60-300 mm
 Armour & Filter layer and Core & Armour  Rock  1-500 kg, 10-1000kg, 60-300 kg, 250-500 kg, 500-1000 kg,
 1000-3000 kg,3000-5000 kg,4000-7000 kg
 Quarry Run Rock  1-500 kg, 1-750 kg,10-500 kg,10-600 kg
 Capillary Breaker Previous Backfill  20-100 mm
 10mm, 0-10mm, 10-200mm
 Pipe Surrounding
 Drainage & Filter Material Previous Backfill
 0-10 mm , 0-20 mm, 5-10 mm, 10-20 mm
 Dust & Sand  0-5 mm , filler  0-75µm
 Rockery & Landscaping  60 - 300 kg, 250 kg, 3000-7000 kg, 250 mm
 Rip-Rap  100-200 mm, 100-300 mm, 150-200 mm, 150-300 mm,
 200-300 mm,
 Gabion Rock  50-150 mm, 75-200 mm