What is BS 812-103.2 - Particle size distribution in aggregates by gravimetric method about?
BS 812 is the British Standard for testing aggregates. The main objective of the BS 812 series is to provide the best industry guidance to ensure construction materials contribute to the structural integrity of your civil engineering works.
BS 812-103.2 is the second section of the 103rd part of the BS 812 series that describes a gravimetric method, based on sedimentation, for the determination of the proportion of material finer than 20 μm in particle size in aggregates.
Note: This method is not suitable for particles larger than 20 μm because of their short settling times.
Who is BS 812-103.2 - Particle size distribution in aggregates by gravimetric method for?
BS 812-103.2 on particle size distribution in aggregates by sedimentation is useful for:
- Manufacturers of aggregates
- Mineral materials and products manufacturers
- Cement and concrete industry
- Civil engineers
- Contractors
Why should you use BS 812-103.2 - Particle size distribution in aggregates by gravimetric method?
The particle size distribution of aggregates is a determining factor for the wearing behaviour of asphalts and up to 2.0 mm. Particles of different sizes have different settling velocities. The relationship between particle diameter and settling velocity is given by Stokes’ Law from which, when the velocity is measured, the particle diameter can be calculated on the assumption that the particles are spherical in shape.
In this regard, BS 812-103.2 provides the testing apparatus and reagents, sampling of aggregates and preparation of test specimens as well as includes test procedure to determine the particle size distribution in aggregates.
As a result, if you are an aggregate manufacturer, complying with BS 812-103.2 can demonstrate the quality, performance, and dependability of your products, achieving the structural integrity required for building works.
Overall, particle size determinations on large samples of aggregate are necessary to ensure that aggregates used in construction materials perform as intended for their specified use.