Engineering behavior of aged polypropylene-modified asphalt pavements

•Effect of aging on the properties of control and PPMCM mixes was determined.•Two aging levels namely: 48 and 96 h at 100 °C were used.•PPMCMs indicate a longer life than the control asphalt mixtures.•PPMCMs achieve the ASTM and SCRB limits.•PPMCMs reveal superior durability with resistance to rutti...

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Bibliographic Details
Published in:Construction & building materials 2018-12, Vol.191, p.187-192
Main Author: Hadidy, A.I. Al
Format: Article
Language:English
Subjects:
Aging
Asphalt
Chemical properties
Concrete cracking
Concrete mixing
Cracking index
Extensional viscosity
Polypropylene
Resilient modulus
Tensile strength
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Summary:•Effect of aging on the properties of control and PPMCM mixes was determined.•Two aging levels namely: 48 and 96 h at 100 °C were used.•PPMCMs indicate a longer life than the control asphalt mixtures.•PPMCMs achieve the ASTM and SCRB limits.•PPMCMs reveal superior durability with resistance to rutting and moisture damage. An investigation was executed to determine the influence of laboratory aging on the engineering characteristics of polypropylene-modified concrete mixtures (PPMCMs) utilizing different experiments. The design bitumen content was obtained for dense mixture by the Marshall method using aggregate blends which conformed to the American Standard for Testing and Materials, ASTM (D-3515). Marshall stability, Marshall modulus of stiffness, indirect tensile strength, tensile strength ratio, resilient moduli, aging index, cracking index, and extensional viscosity of the aged PPMCMs at temperature of 100 °C and at two aging levels between 48 and 96 h are used to evaluate the performance change of PPMCMs. The PPMCMs achieve the ASTM specified limits; they reveal superior durability, elasticity, and adhesive characteristics with higher resistance to permanent deformation and moisture damage.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2018.10.007