01550212

Component

The rut resistance of item P-401 hot mix asphalt (HMA) plays a critical role in rutting performance of airfield pavement. Flow Number test, High Temperature Indirect Tensile (HT/IDT) Strength test and Asphalt Pavement Analyzer (APA) test were conducted on P-401 mixture to estimate the rut resistance. Dynamic modulus and phase angle were also measured using Asphalt Mixture Performance Tester (AMPT). Three types of P-401 mixtures and two asphalt binders were investigated. Recent research indicates that distribution of aggregate particles is correlated with the rutting performance of the asphalt concrete. Dominant Aggregate Size Range (DASR) - Interstitial Component (IC) method was developed in Florida to evaluate permanent deformation resistance of highway asphalt mixture. In this study, DASR-IC method was used on P-401 mixture. Laboratory testing result shows modified binder PG 76-22 provides better resistance to rutting than PG 64-22 binder. A strong correlation is observed between HT/IDT results and the other two test methods. DASR porosity and Disruption Factor (DF) were identified to be suitable criteria to estimate rut resistance of P-401 mixture.

This paper was sponsored by TRB committee AFK50 Characteristics of Asphalt Paving Mixtures to Meet Structural Requirements. Alternate title: Evaluation of Rutting Performance of Airport Pavement HMA Using Gradation Based Method and Laboratory Testing.

01550057

15-3353

English

16p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; References; Tables

Aggregate gradation; Airport runways; Bituminous binders; Hot mix asphalt; Laboratory tests; Rutting

Asphalt Pavement Analyzer

Flow number test; Indirect tensile strength

Aviation; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials

Transportation Research Board Annual Meeting 2015 Paper #15-3353

TRIS, TRB, ATRI

Dec 30 2014 1:07PM