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Aggregates
UKAS Accredited
Lab Test

Resistance to Fragmentation – Los Angeles Test

Subjects a coarse aggregate sample to abrasion, impact, and grinding.
BS EN 1097-2:2020
Aggregates
UKAS Accredited
Lab Test

Laboratory California Bearing Ratio CBR

Penetration of soil with a plunger over a standard area in the lab. The harder the surface, the higher the CBR percentage.
BS 1377-2:2022
Aggregates
Lab Test
Site Test

Water-Soluble Sulphate (WS)

The Water-Soluble Sulphate Test measures sulphate levels in soil or aggregates to assess the risk of sulphate attack on concrete in construction projects.
Aggregates
Lab Test

Grading of Soils

The Grading of Soils test determines particle size distribution to assess soil suitability for construction, including compaction and permeability properties.
Asphalt
Lab Test

Bitumen Content

The Bitumen Content Test measures the percentage of bitumen in asphalt mixtures to ensure their quality and performance for construction projects.
Asphalt
Lab Test

Grout Compressive Testing

The Bitumen Content Test measures the percentage of bitumen in asphalt mixtures to ensure their quality and performance for construction projects.
Concrete
Lab Test
Site Test

Pull Out Test

Evaluates the strength and security of fixings by applying tension to the desired load level.
Asphalt
Site Test

Bitumen Extraction Test (Binder Content)

The Bitumen Extraction Test measures the binder content in asphalt mixtures, ensuring quality, durability, and performance for construction applications.
Concrete
Lab Test
Site Test

Polypropylene Fibres

Measures density of steel, polypropylene, or glass fibers by washing and weighing sample.
BS EN 14488-7 & BS EN 14721
Concrete
Lab Test

Residual Flexural Tensile Strength (RFTS) of Concrete Beams

Flexural strength tested through application of load through upper and lower roller.
BS EN 12390‑5, BS EN 14651: 2005
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Lab Test
Resistance to Fragmentation – Los Angeles Test

The Los Angeles (LA) Abrasion Test measures the resistance of coarse aggregates to fragmentation and wear. It subjects a sample of aggregate (retained on a No. 12 sieve) to abrasion, impact, and grinding inside a rotating steel drum with steel spheres.

The Process

  1. Sample Preparation: A sample of coarse aggregates is prepared, ensuring that only material retained on the No. 12 (1.70 mm) sieve is used.
  2. Test Procedure: The sample is placed in a rotating steel drum along with a specified number of steel spheres (usually 12 to 20). The drum is rotated for a set period, typically 500 to 1000 revolutions, subjecting the sample to abrasion and impact from both the spheres and the drum.
  3. Assessment: After the test, the sample is removed, and the percentage of material that has broken down into finer particles is calculated. The lower the percentage, the more durable the aggregate.

Why Is This Test Important?

  • Durability: Ensures that aggregates used in construction can withstand wear and impact during transportation, placement, and use in roads, pavements, and other structures.
  • Quality Control: Helps assess the suitability of aggregates for specific applications, particularly in environments where high wear resistance is required.
  • Regulatory Compliance: Meets industry standards for aggregate quality, ensuring the materials are fit for use in construction projects.

The Los Angeles Abrasion Test is critical for evaluating the durability of coarse aggregates used in construction. Get in touch to arrange reliable testing for your project.

BS EN 1097-2:2020

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