AS/NZS 2891.3.1:2013 PDF Download

AS/NZS 2891.3.1:2013 outlines the procedures for determining the binder content and aggregate grading of asphalt mixes using the reflux method. The standard provides guidelines for conducting hot solvent extraction to determine the amount of bituminous binder present in the mixture. This involves extracting the binder from the asphalt using a solvent, which is then evaporated to leave behind the residue containing the binder.

Additionally, the standard outlines the process of determining the particle size distribution of the aggregate in the mixture using sieve analysis. This method involves passing the aggregate through a series of sieves with different mesh sizes. The retained material on each sieve is weighed to determine the proportion of particles falling within specific size ranges. The aggregate grading provides valuable information about the composition and quality of the asphalt mixture.