Development and evaluation of hot mix asphalt stability index

作者：Abu Abdo Ahmad Mustafa^*; Bayomy Fouad; Nielsen Richard; Weaver Thomas; Jung S J; Santi Michael

来源：International Journal of Pavement Engineering, 2010, 11(6): 529-539.

DOI：10.1080/10298436.2010.488728

• aggregate structure
• contact energy index
• gyratory stability
• stability
• Superpave gyratory compactors
• AASHTO MEPDG

This paper addresses the development and evaluation of a mix stability index referred to as the gyratory stability (GS). GS is calculated from the compaction data by summing the cumulative energies dissipated in the compaction of a gyratory sample. A wide range of commonly used mixes in the State of Idaho were selected for evaluation. Mixes were tested for dynamic modulus (E*) and flow number (FN); rutting was measured with the asphalt pavement analyser (APA). Furthermore, E* test results were used in the AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG) as level 1 inputs, to predict rutting for these mixes; GS ranked mixes similarly to the APA and FN tests and MEPDG results. Furthermore, results indicated that the GS has the potential to be used as a screening tool for asphalt mix design, especially to decide upon the acceptance of the mix aggregate structure, and as a quality control tool.

• 出版日期2010