Gradation Test - Pavement Interactive
The standard gradation and sieve analysis test is: AASHTO T 27 and ASTM C 136: Sieve Analysis of Fine and Coarse Aggregates; Background. The particle size distribution, or gradation, of the constituent aggregate (Figure 3) is one of the most influential characteristics in determining how an HMA mixture will perform as a pavement material.
Reviewing asphalt test results | Asphalt magazine
THE ESSENTIALS OF REVIEWING ASPHALT TEST REPORTS. By Danny Gierhart, P.E. People in many positions, from agency/ owners of highways, to those in business having their parking lot paved, look to asphalt test reports for information regarding the quality of the material they have purchased.
Asphalt Aggregate Gradation and Size Testing with Industrial ...
Asphalt Aggregate Gradation and Size Testing with Industrial Scales In theory, there exists a particular gradation that, for a given maximum aggregate size, will produce a maximum density gradation and minimize the void space between particles.
PDF Basic Asphalt Materials Mixture Design and Testing
Fine gradation: A gradation that, when plotted on the 0.45 power gradation graph, falls mostly above the 0.45 power maximum density line. The term generally applies to dense graded aggregate. Coarse gradation: A gradation that, when plotted on the 0.45 power gradation graph, falls mostly below the 0.45 power maximum density line.
Asphalt Content Testing: Solvent Extraction vs Ignition ...
Once the asphalt and solvent are separated from the aggregate, the aggregate is weighed and compared to the initial sample weight, and the asphalt content is calculated as the percentage difference. The operator can then run a gradation test on the aggregate.
PDF Measuring Asphalt Content2 - Civil Engineering
Measuring Asphalt Binder Content (from the WSDOT Pavement Guide) The asphalt content and gradation test can be used for HMA quality control, acceptance or forensic analysis. The three major test methods, solvent extraction, nuclear and ignition furnace are discussed here. Each method offers a way to determine asphalt content from an HMA sample.
Standard Test Method for Asphalt Content of Asphalt Mixture ...
1.1 This test method covers the determination of asphalt content of asphalt mixture and asphalt pavement samples by removing the asphalt cement in an ignition furnace. The means of sample heating may be the convection method or direct irradiation method.
PDF Determining Asphalt Content from Asphalt Paving Mixtures by ...
1.1 Use this test method to determine the asphalt content of hot mix asphalt (HMA) paving mixtures using an ignition oven. Use the remaining aggregate for sieve analysis in accordance with Tex-200-F. 1.2 Use this test method to determine aggregate gradation and asphalt content correction factors before the start of production.
Gradation and Size - Pavement Interactive
Provide adequate volume for the binder (asphalt binder or portland cement) to occupy. Promote rapid drainage and resistance to frost action for base and subbase courses. Therefore, although it may not be the "best" aggregate gradation, a maximum density gradation does provide a common reference. A widely used equation to describe a maximum ...
Aggregate Testing Equipment - Humboldt Mfg
Humboldt's aggregate testing equipment includes ASTM testing sieves, as well as air jet sieves and wet-washing sieves. We also have sieve shakers and material sample splitters for most applications. Our testing equipment also includes abrasion testing, rock testing, moisture and specific gravity testing equipment.