From our main Laboratory in Poole, Dorset, ACS Group of Companies provide quality testing and material consultancy for the construction and civil engineering industry. Since our initial UKAS Accreditation in 1990, our scope of testing has steadily increased as we are now able to offer a comprehensive range of tests, carried out to both British (BS) and European (EN) Standards and to our approved In-House Test Methods.
We provide a comprehensive range of Aggregates and Soils Testing meeting British and European Standards together with Standard Highways MCHW requirements. Mechanical, physical and chemical testing is conducted on a wide range of natural and recycled aggregates to ensure they are fit for purpose.
As well as testing, our Operations Manager and Senior Technicians are on hand to advise clients on their testing requirements as well as interpreting their results.
What is shows
Percentage of water based on dry mass of sample.
Particle Size Distribution
BS EN 933-1
Grading Aggregates to determine suitability using grading limits defined in BS Standards and MCHW.
Constituents of Coarse Recycled Aggregates
BS EN 933-11
Recycled materials, physical examination to determine the constituent parts and foreign materials within a sample. (Note; this test is not suitable for sands)
Los Angeles (Fragmentation)
BS EN 1097-2
A common test to indicate the resistance to fragmentation indicating toughness, replaces BS 812 Ten Percent Fines test.
BS EN 1097-1
Abrasion resistance and durability of aggregates
BS EN 1367-2
Soundness of aggregates, resistance to disintegration from soaking and crystallising of salts granules.
BS 812 & SHW
Measurement of swell when a sample is subjected to available water in freezing conditions, requirement under MCHW for materials with 450mm of final construction
Particle Density & Water Absorption
BS EN 1097-6
Particle density, sometimes referred to as specific gravity and absorption to show porosity of the aggregate when used in conjunction with Loose Bulk Density and Voids test.
BS EN 933-8
Determines the cleanliness of a fine aggregate. Reports to % sand presence in sample.
BS EN 933-9
Determines how absorptive the fine fraction (<2mm fraction) of a material is. i.e. harmful fines content.
Particle Shape – Flakiness/Shape Index
BS EN 933-3/4
Slotted sieves designed to determine flaked / elongated shapes with in the aggregate
Loose Bulk Density & Voids
BS EN 1097-3
With single size material this will provide mass against volume and using PD/WA voidage can be calculated.
Max Dry Density/Optimum Moisture Content (Vibrating Hammer)
BS EN 13286-4
5 point test to determine the optimum water content to achieve the best density
What is shows
Natural Moisture Content
Percentage of water in a soil based on dry mass
Saturated Moisture Content or IDD
Carried out on chalk lumps to determine suitability
Plasticity Index (Atterberg Limits)
4 parts, Liquid Limit, Plastic Limit, plasticity index and liquidity index. Clay testing to determine suitability and shrink ability potential
Combination of tests, Moisture Content, Grading, sedimentation and Atterberg limits used by designers to calculate potential CBR value.
Particle Size Distribution (PSD)
Grading of soils for compliance to specification including SHW, also provides data to determine uniformity coefficient
Additional to PSD to provide a grading of material passing 63micron to 2 microns
Moisture Condition Value (MCV)
Compaction test to determine the compactive effort required to compact a material in to a cylinder at ‘as received’ moisture content.
Laboratory CBR can be carried out on material at natural or specified moisture content, in additional soaked lab CBR involves immersing the sample in water and measuring swell
Shear Strength Testing
Applying pressure to a disturbed or un-disturbed sample to measure force required to shear a clay sample.
MDD/OMC (2.5kg, 4.5kg and vibrating hammer)
5-point test to determine the optimum water content to achieve the best density, different compaction methods depending on the material type and size.
To determine flow of water through a specimen of clay/silt for purposes of landfill design/compliance testing.
Combination of physical and chemical testing to determine the suitability of topsoil and reported with BS 3882 limits.
Please note; this is not a complete list of the testing we provide, for a full list of tests please contact us.
Please see below for a list of the services provided by ACS;
Concrete was the first service to be offered by ACS Testing back in 1987, since then we have increased our scope to cover a wide range of UKAS Accredited testing on fresh and hardened concrete, both on site and in our laboratories.
ACS Environmental Ltd was established in 2007 to complement the physical materials testing service provided by ACS Testing Ltd to offer a range of analytical services to clients in order to meet their overall needs.
Our purpose built analytical laboratory enables ACS Environmental Testing Ltd to provide, in conjunction with our other group companies, a comprehensive sampling, monitoring and analysis service on a wide range of leachate and water samples.