A laboratory study was carried on the effects of physical hardening on the low-temperature performance of bitumen and corresponding asphalt mixtures. Bitumen testing involved measurements of glass transition temperature and creep stiffness at various isothermal storage times. Mixture testing included evaluation of glass transition temperature, thermal stress build-up in restrained conditions and thermal strains in non-restrained conditions. A physical hardening rate was introduced both for bitumen and mixtures (PHRB and PHRM). Results indicated that glass transition temperatures can be reduced passing from bitumen to mixtures and a correlation can be found between the hardening rates PHRB and PHRM.

Influence of Physical Hardening on the Low-Temperature Properties of Bitumen and Asphalt Mixtures / Baglieri, Orazio; Dalmazzo, Davide; Barazia, M; Tabatabaee, H. A.; Bahia, H. U.. - In: PROCEDIA: SOCIAL & BEHAVIORAL SCIENCES. - ISSN 1877-0428. - STAMPA. - 53:(2012), pp. 504-513. (Intervento presentato al convegno SIIV-5th International Congress - Sustainability of Road Infrastructures 2012 tenutosi a Roma nel 29-31 october 2012) [10.1016/j.sbspro.2012.09.901].

Influence of Physical Hardening on the Low-Temperature Properties of Bitumen and Asphalt Mixtures

BAGLIERI, ORAZIO;DALMAZZO, DAVIDE;
2012

Abstract

A laboratory study was carried on the effects of physical hardening on the low-temperature performance of bitumen and corresponding asphalt mixtures. Bitumen testing involved measurements of glass transition temperature and creep stiffness at various isothermal storage times. Mixture testing included evaluation of glass transition temperature, thermal stress build-up in restrained conditions and thermal strains in non-restrained conditions. A physical hardening rate was introduced both for bitumen and mixtures (PHRB and PHRM). Results indicated that glass transition temperatures can be reduced passing from bitumen to mixtures and a correlation can be found between the hardening rates PHRB and PHRM.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2504323
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