Laboratory investigation of aged HDPE-modified asphalt mixes

High density polyethylene has been utilized by many for asphalt binder/mix modification. This paper examines: (1) the effect of laboratory aging process at temperature of 100°C and at two aging levels between 48 and 96 h on dense-graded asphalt and stone mastic asphalt mixes with and without 5% high...

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Bibliographic Details
Published in:International journal of pavement research & technology 2019-07, Vol.12 (4), p.364-369
Main Author: Ibrahim, Al-Hadidy A.
Format: Article
Language:English
Subjects:
Aging
Asphalt
Asphalt mixes
Building Construction and Design
Civil Engineering
Engineering
High density polyethylenes
Laboratories
Polyethylene
Quotients
Softening
Stability
Stone mastic asphalt
Structural Materials
Tensile strength
Testing
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Summary:High density polyethylene has been utilized by many for asphalt binder/mix modification. This paper examines: (1) the effect of laboratory aging process at temperature of 100°C and at two aging levels between 48 and 96 h on dense-graded asphalt and stone mastic asphalt mixes with and without 5% high density polyethylene by characterizing Marshall stability, Marshall Quotient, indirect tensile strength, tensile strength ratio, and resilient modulus; and (2) the engineering characteristics, such as penetration, ductility, softening point, loss of heat and air (aging), temperature susceptibility, and uniformity of high density polyethylene-modified asphalt. The test results of high density polyethylene-dense-graded asphalt mixes show higher indirect tensile strength, tensile strength ratio, and resilient modulus, and lower Marshall stability, and Marshall Quotient than high density polyethylene-stone mastic asphalt mixes. The asphalt/ high density polyethylene binder test results show higher softening point, more resistance to temperature and aging, and a good compatibility.
ISSN:1996-6814
1997-1400
DOI:10.1007/s42947-019-0043-y