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Rutting and Moisture Resistance of Asphalt Mixtures Containing Polymer and Polyphosphoric Acid Modified Bitumen

2004; Taylor & Francis; Volume: 5; Issue: 3 Linguagem: Inglês

10.1080/14680629.2004.9689975

2164-7402

G. Orange, Jean-Valery Martin, Andrew M. Menapace, Mike Hemsley, Gaylon L. Baumgardner,

Polymer Nanocomposites and Properties

Initial engineering properties of materials as well as mechanical and environmental conditions governs the behaviour of asphalt pavements in service. To enable pavements to accommodate increasing traffic intensity and axle loads in varying climate environments, high quality bitumen is required. Special binders are also needed for other applications, such as bridges and airport runways. These examples suggest the necessity of bitumen modification. While modification of bitumen may be carried out via other methods, the most promising has been polymer modification This paper discusses the performance of high grade bituminous binders modified via synthetic polymers, polyphosphoric acid and combinations thereof, and their performance in asphalt mixtures in subsequent laboratory evaluation of moisture and mechanical damage (rutting). The effect of polyamine antistrip addition to asphalt mixtures modified with polymer and polyphosphoric acid is discussed.