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Particle density and water absorption tests - general

2 Particle density and water absorption tests - general [Pg.76]

Determining the density or the specific gravity of aggregates is important as the value is used in calculations such as composition of aggregate in bituminous mixtures, determination of voids in a bituminous mixture and calculations of weight/volume. [Pg.76]

The ratio of the mass of aggregate to the volume the aggregate occupies in water is designated as density and its units of measurement are g/cm, Mg/m or kg/m. The mass of the volume of aggregates to the mass of an equal volume of water, normally at 25°C, or alternatively 23°C or 20°C, is designated as specific gravity. The value determined is dimensionless. [Pg.76]

In either case, what is taken as volume of the aggregate affects the result. [Pg.76]

In an ideal situation in which the aggregates do not have any internally enclosed or surface micro- or macropores, the measured volume (V) coincides with the absolute volume of aggregate. In this case, the absolute density (p) or the absolute specific gravity of aggregates (G) is determined. [Pg.76]




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