Hunter Civilab specialise in concrete testing, offering a range of services and test types, as well as project compliance testing to RMS & AS specifications.
The Fine Particle Distribution test method is used to determine the particle size distribution of fine aggregates. Fine aggregates are defined as particles passing through the 4.75mm sieve size.
The Flakiness Index is a test method defined by the AS1141 standard used to determine the particle shape of aggregate. Specifically, it measures the percentage of particles that have a thickness less than 0.6 of their mean dimension.
The Flakiness Index is then calculated as the percentage of particles that are identified as flaky. This value is an important property that affects the workability, strength, and durability of concrete and asphalt mixes.
Particle shape by proportional caliper is a test method used to determine the shape of individual particles of aggregate according to the AS1141 standard.
This test is used to determining the amount of fine particles in an aggregate sample that pass through a 75-micron sieve, ensuring materials meet the required specifications for workability, strength, and durability in construction applications.
Particle size distribution by sieving is the method of determining the proportion of aggregate particles of different sizes in a sample by passing the sample through a series of sieves of progressively smaller openings and measuring the mass retained on each sieve.
Particle density and water absorption are important properties of fine aggregate used in construction, as they affect the properties of concrete and mortar mixes.
Bulk density, as defined by AS1141, is the mass of an aggregate material divided by the volume it occupies, including the air space between particles. It is expressed in kilograms per cubic meter (kg/m³).
By determining the bulk density of aggregates according to the AS1141 standard, construction professionals can ensure that their materials meet the required specifications for strength and durability in construction applications.
The sampling of aggregates to AS1141.3.1 is an important step in ensuring the quality of construction materials. It is important to follow the standard guidelines for sampling to obtain representative and reliable samples for testing.
Hunter Civilab is a NATA Accredited Organisation.
See our Scope of Accreditation here.