Aggregate is a key component of many construction materials, including concrete, asphalt, and mortar. In order for these materials to be effective, the aggregate must be of high quality and meet certain standards. In order to ensure that the aggregate used in a project is of the required quality, a variety of tests are typically performed to evaluate its physical and chemical properties. In this blog post, we will take a closer look at the different types of testing that are done to aggregate and how these tests are used to ensure its quality.

One of the most common types of testing that is done to aggregate is sieve analysis. Sieve analysis is a laboratory test that is used to determine the particle size distribution of an aggregate. It involves sifting the aggregate through a series of sieves of different sizes, and then measuring the amount of material that is retained on each sieve. This allows the gradation, or particle size distribution, of the aggregate to be determined, which is important for ensuring that it is of the required quality.

Another common type of testing that is done to aggregate is specific gravity testing. Specific gravity is a measure of the density of a material, and it is typically used to determine the weight-to-volume ratio of an aggregate. This is important because it allows the relative density of the aggregate to be determined, which can affect its performance in certain applications. Specific gravity testing is typically performed using a pycnometer, which is a device that is used to measure the volume of a material.

In addition to sieve analysis and specific gravity testing, there are several other types of testing that are commonly performed on aggregate. For example, the Los Angeles Abrasion test is a laboratory test that is used to measure the resistance of an aggregate to abrasion, which can affect its performance in certain applications. The Aggregate Crushing Value test is another laboratory test that is used to measure the resistance of an aggregate to crushing, which can also affect its performance.

Overall, there are many different types of testing that are done to aggregate in order to ensure its quality. These tests are used to evaluate the physical and chemical properties of the aggregate, and they help to ensure that it is of the required quality for use in construction materials. By understanding the different types of testing that are done to aggregate, you can better understand its importance and how it is used in construction.

References:

American Society for Testing and Materials (ASTM). (n.d.). Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates. Retrieved from https://www.astm.org/Standards/C136.htm

Federal Highway Administration (FHWA). (n.d.). Evaluation of Quality of Coarse Aggregate in the Field. Retrieved from https://www.fhwa.dot.gov/engineering/geotech/pubs/06414/06414.pdf

Indian Standard (IS). (n.d.). Methods of Test for Aggregates for Concrete. Retrieved from https://www.isCode.org/is:2386(part1-part2-part3)/