Natural Stone Testing

Our newly refurbished Natural Stone Testing Laboratory has given us the opportunity to expand our testing scope as well as increase production and better improve on our turnaround of samples. Our Natural Stone Laboratory is equipped to test for a comprehensive range of Geological, Physical and Mechanical properties on Rock, Natural Stone and Armour stone.

NATURAL STONE TESTING

NATURAL STONE TESTING
Test Method What is shows
Abrasion Resistance BS EN 14157 This test simulates long term wear effects on natural stone products (e.g. pedestrian trafficked areas) using an abrasive flow medium and abrasion wheel.
Breaking Load and Dowel Hole BS EN 13364 This test gives a breaking load of a pin which is grout anchored into a natural stone specimen. Typically done on proposed cladding stone destined for interior and exterior fixings.
Flexural Strength under concentrated load BS EN 12372 This test gives a flexural strength from a single load point. Typically done on proposed cladding stone for ventilated facades. This test can also be done in conjunction with the frost resistance test to determine strength deterioration over a cyclic temperature pattern.
Flexural strength under constant moment BS EN 13161 This test gives a flexural strength from two load points. Typically done on proposed cladding stone for ventilated facades. This test can also be done in conjunction with the frost resistance test to determine strength deterioration over a cyclic temperature pattern.
Frost Resistance BS EN 12371 This test subjects natural stone specimens to a cyclic temperature pattern of freezing air and thawing in water. Specimens are either “Scored” visually during test or tested mechanically (Flexural strength or uniaxial compressive strength) to determine performance.
Petrographic Examination BS EN 12407 This test involves subjecting a specimen of the natural stone to visual and low power microscopy. The analysis gives information of constituents present in the stone in addition to any features of interest. This could include minerals which give rise to discolouration’s in the stone.
Point Load Strength Test (Rock) IRSM This test is used to classify the strength of rock materials on samples with little to no preparation. This test can also be used to predict strengths with correlated specimens (Uniaxial compressive strength).
Real and Apparent Density (total and open porosity) BS EN 1936 This test gives a density of stone and the porosity (Open voids ratio to volume). The density can be used to determine weight per volume for design purposes. The porosity can give an indication of the absorption properties. High porosity materials may also exhibit deterioration under frost cycling and salt crystallisation testing.
Resistance to Salt Crystallisation BS EN 12370 This test involves cycling specimens between an chemical solution, Air drying and then cooling. This cycle is run 15 times and then reported as a % Mass change. This test can be used in conjunction with the Frost Resistance test to determine durability over time in open weather conditions.
Slip Resistance by pendulum tester BS EN 14231 This test involves using a swing mounted rubber slider to determine the slip resistance of a surface. The higher the number, the less slippery the surface is. This can be done over different surface finishes (Polished, honed, sandblasted) to determine suitability for pedestrian areas. This test can also be conducted IN FIELD on natural stone products already laid.
Water absorption at atmospheric pressure BS EN 13755 This test gives a water absorption by weight (%) of natural stone. This can be used to calculate the saturated weight of the natural stone for use in the design phase in addition to indicating expected water addition for durability purposes (e.g. material alteration via mechanically or chemically).
Water absorption coefficient by capillarity BS EN 1925 This test gives a water absorption by unit area of natural stone in contact with water. This can be used in conjunction with other tests to determine suitability of the stone for the intended use (E.g. cladding, tiles etc).
Uniaxial compressive strength BS EN 1926 This test gives a compressive strength (MPa) of either cube or cylindrical specimens. This can be used in the design stage for structural or load bearing elements. This can also be used in addition to the frost resistance test to determine performance over time when exposed to cyclic freezing and thawing.

 

The above table does not list all available tests. Please contact us to discuss your requirements further.

Please see below for a list of the services provided by ACS;

  • On-Site Testing Services

    ACS Testing offer a comprehensive range of professional On-Site Testing, all carried out by our fully trained Site Technicians

  • Aggregates & Soils Testing

    From our main Laboratory in Poole, Dorset, ACS Group of Companies provide quality testing and material consultancy for the construction and civil engineering industry.

  • Bituminous Testing

    Bituminous road surfacing materials are produced by mixing mineral aggregate with a bitumen binder in predetermined quantities and within defined temperature ranges.

  • Concrete Testing

    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.

  • Mortar & Screed Testing

    Mortar has played a major role in construction since ancient times with the oldest example having been found in Israel and thought to date back 10,000 years.

  • Contamination & WAC Testing

    At ACS Environmental Testing we offer an efficient and reliable analysis service using various test leaching procedures specified by the Environment Agency.

  • Chemical Testing

    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.

  • Leachate & Water Analysis

    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.

  • Natural Stone Testing

    Our newly refurbished Stone Testing Laboratory has given us the opportunity to expand our testing scope as well as increase production and better improve on our turnaround of samples.

  • Site Laboratory Service

    Over the last twenty-five years, ACS Testing Ltd have supplied custom fitted Site Laboratories with Technicians to many construction sites and projects worldwide.

ACS Group of Companies offer a professional weekly collection service covering the South of England and Wales. See below for our coverage range;

ACS Testing Coverage Map

Contact One of the Team

If you require a collection that is outside of our usual range, please feel free to call us on 01202 622858 or contact us and we will do our best to accommodate your requirements.