What test measures the gradation and moisture content of aggregate?

The combined gradation and moisture test is designed to assess both the distribution of particle sizes (gradation) and the moisture content present in the aggregate sample. This test is critical for determining how different sizes of aggregate will perform in a mixture, particularly in asphalt or concrete applications. Understanding gradation is essential as it affects workability, strength, and durability of the final product. Measuring moisture content concurrently ensures that adjustments can be made to the mix to achieve the desired consistency and density, allowing for better control over the properties of the mixture.

While other tests like the standard specific gravity test, sieve analysis test, and moisture content test are important in aggregate testing, they focus on single aspects. The sieve analysis test provides information on particle size distribution independently, and the moisture content test solely measures the water present in the aggregate. Therefore, choosing the combined gradation and moisture test is crucial for obtaining a comprehensive understanding of both gradation and moisture in one procedure, allowing for effective preparation and use of aggregates in construction.