Aggregate and Rock Testing

Aggregate & Rock Testing at i2 Analytical

The use of aggregates in construction has been prominent since the Egyptians built the Pyramids. Its use in the manufacturing of Concrete, Asphalt and Road Construction makes it one of the leading players in construction.
Aggregates can be derived from two main sources, Primary and Secondary.

Primary Source Aggregate indicates that the materials are naturally occurring deposits which have been excavated and processed for the use in construction and that this is their first use. Such materials can be Limestone, Granite, Alluvial Sands & Gravels, and Sand.

Secondary Source Aggregates will indicate a material not being used for the first time and derived from recycled sources such as Crushed Concrete, Crushed Brick, Glass, Bituminous Road Planning’s, Ground Granulated Blast-furnace Slag (GGBS) and Pulverised Fuel Ash (PFA).

In both cases, thorough and stringent laboratory tests are carried out for a variety of performance and Quality Control criteria. Testing can include physical, mechanical and chemical properties, all ensuring that aggregates comply with the required specification and more importantly, will be fit for purpose and thus reducing risk through the length of the contract and beyond.

At i2 Analytical Limited we have the facilities and technical expertise to provide a comprehensive testing service to all aspects of construction design and implementation use of Aggregates.

Our UKAS accredited laboratory can carry out testing to British and European Standards including the following:

Test
Standard
UKAS Accredited Test
Water Content
BS EN 1097:2008
Yes
Grading Analysis - Wet
BS EN 933:2012
Yes
Grading Analysis - Dry
BS EN 933:2012
Yes
Constituent Parts
BS EN 933:2009
Yes
Flakiness Index
BS EN 933:2012
Yes
Shape Index
BS EN 933:2008
Yes
Crushed & Broken Surfaces
BS EN 933:1998
Yes
Micro Deval
BS EN 1097:2011
Yes
Los Angeles Coefficient
BS EN 1097:2020
Yes
Water Absorption
BS EN 1097:2013
Yes
Water Absorption & Particle Density (particles 31.5mm to 63mm)
BS EN 1097:2013
Yes
Water Absorption & Particle Density (particles 4mm to 31.5mm)
BS EN 1097:2013
Yes
Water Absorption & Particle Density (particles 0.063 to 4mm)
BS EN 1097:2013
Yes
Loose Bulk Density & Voids
BS EN 1097:1998
Yes
Magnesium Sulphate Soundness Value
BS EN 1367:2009
Yes
Laboratory Reference Density
BS EN 13826:2003
Yes
Aggregate Crushing Value
BS 812:1990
Yes
Ten Percent Fines Value
BS 812:1990
Yes
Frost Heave (Subcon)
BS 812:2009
Yes
Bitumen Content
BS EN 12697: 2002/2020
Yes
Point load
ISRM
Yes
Uniaxial Compressive Strength (UCS)
ISRM
Yes
Slake Durability
ISRM
None

Darren Berrill
Geotechnical Director

d.berrill@i2analytical.com

Maria Chandler – Northampton

Terry Stafford i2 analyticalm.chandler@i2analytical.com

Ross Hamilton – Scotland

Terry Stafford i2 analyticalr.hamilton@i2analytical.com

Mick Bowley – Southern

Terry Stafford i2 analyticalm.bowley@i2analytical.com

Dave Goddard
Business Development Director

Terry Stafford i2 analyticald.goddard@i2analytical.com