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Asphalt Concrete Mixture

The Experts below are selected from a list of 255 Experts worldwide ranked by ideXlab platform

A Drescher – 1st expert on this subject based on the ideXlab platform

  • influence of roofing shingles on Asphalt Concrete Mixture properties final report
    , 1993
    Co-Authors: D E Newcomb, Mary Stroupgardiner, B Weikle, A Drescher

    Abstract:

    It is estimated that the production of new roofing shingles generates approximately 1,000,000 tons of waste annually in the U.S., and about 36,000 tons of this waste is in the Twin Cities Metro Area of Minnesota. With another 8.5 million tons of waste materials from the rebuilding of shingle or hot-mop roofs each year on a national scale, it seems viable that their use in hot-mix would be an attractive alternative to disposing of them in landfills. This report presents the results of an effort to evaluate the use of roofing waste generated by manufacturers and from reconstruction projects. It was shown that up to 5%, by weight of Mixture, manufacturing waste roofing shingles could be used in Asphalt Concrete with a minimum impact on the properties of the Mixture. At a level of 7.5%, a noticeable softening of the Mixture occurs, and this might be detrimental to pavement performance. The use of shingles from roof reconstruction projects resulted in the embrittlement of the Mixture which may be undesirable for low temperature cracking of pavements. The manufactured shingle waste seems to work well in stone mastic Asphalt Mixtures.

  • Influence of roofing shingles on Asphalt Concrete Mixture properties. Final report, 1992-1993
    , 1993
    Co-Authors: D E Newcomb, B Weikle, M. Stroup-gardiner, A Drescher

    Abstract:

    The objective of the study was to evaluate the use of waste shingles from manufacturing and roof reconstruction projects in hot mix Asphalt Concrete Mixtures. In dense-graded Asphalt Mixtures, it was hypothesized that the waste material might serve as an extender for the new Asphalt in the mix as well as a fiber reinforcement. In the stone mastic Asphalt (SMA), it could serve as the binder stiffener typically used to prevent the Asphalt from draining out of these types of Mixtures.

Kyuseok Yeon – 2nd expert on this subject based on the ideXlab platform

  • tensile reinforcement of Asphalt Concrete using polymer coating
    Construction and Building Materials, 1996
    Co-Authors: Yongchurl Park, Kyuseok Yeon

    Abstract:

    Abstract This study investigates the possibility of utilizing a polyester resin for reinforcing flexible pavements. The application of a thin-layer coating with a polymer, unsaturated polyester resin (UPR) on the surface of a laboratory-prepared unmodified Asphalt Concrete Mixture was studied as a tensile reinforcement method for such a material. Selected laboratory performance tests were conducted and the results are compared with those of a normal (uncoated) Asphalt Concrete Mixture and a modified Asphalt Mixture, both Mixtures being widely used in Korea. The polymer coating was found to be effective in improving Marshall stability, tensile strength and flexural strength of Asphalt Concrete. These improvements can be explained as the effect of reinforcement by a thin polymer layer which is fully bonded to the specimen faces. The reinforcement was also effective in reducing the stiffness of the Mixture whilst improving load-carrying capacity. This improvement in strength and reduction in stiffness resulted in a retardation of crack initiation resulting from cyclic load application and a significantly improved resistance to crack propagation. The study has shown that there is a possibility of using the polymer coating as a method of tensile reinforcement with flexible pavements.

Amir Abedin Maghanaki – 3rd expert on this subject based on the ideXlab platform

  • use of plastic waste poly ethylene terephthalate in Asphalt Concrete Mixture as aggregate replacement
    Waste Management & Research, 2005
    Co-Authors: Abolfazl Hassani, H Ganjidoust, Amir Abedin Maghanaki

    Abstract:

    An environmental program in most regions of Iran is the large number of bottles made from poly-ethylene terephthalate (PET) deposited in domestic wastes and landfills. This article reports on an experimental study undertaken to investigate the possibility of using PET waste in Asphalt Concrete mixes as aggregate replacement (Plastiphalt). In the study, the mechanical properties of Plastiphalt mixes were compared with control samples, focusing on the parameters of Marshall stability, flow, Marshall quotient (stability-to-flow ratio) and density. The waste PET used in this study was in the form of granules of about 3 mm diameter which would replace (by volume) a portion of the mineral coarse aggregates of an equal size (2.36-4.75 mm). The results showed that the aggregate replacement of 20% by volume with PET granules would result in a reduction of 2.8% in bulk compacted mix density. The value of flow in the plastiphalt mix was lower than that of the control samples. The results also showed that when PET was used as partial aggregate replacement, the corresponding Marshall stability and Marshall quotient were almost the same as for the control samples. The authors conclude that the use of PET in this Asphalt mix is suitable for practical use and that the recycling of PET for Asphalt Concrete roads helps alleviate a difficult environmental problem.

  • use of plastic waste poly ethylene terephthalate in Asphalt Concrete Mixture as aggregate replacement
    Waste Management & Research, 2005
    Co-Authors: Abolfazl Hassani, H Ganjidoust, Amir Abedin Maghanaki

    Abstract:

    One of the environmental issues in most regions of Iran is the large number of bottles made from poly-ethylene terephthalate (PET) deposited in domestic wastes and landfills. Due to the high volume…