Search results for " Asphalt concrete"

showing 2 items of 2 documents

Laboratory and in-situ tests for estimating improvements in asphalt concrete with the addition of an LDPE and EVA polymeric compound

2019

Abstract Pavement deformation is a critical issue in the design of pavement structures and the related mixture. Asphalt concretes may be very sensitive to this problem, in compliance with the viscoelastic behaviour of the adopted bitumen. To improve the material performance, many attempts have been made to introduce in the mixture other materials as “modifiers” or “additives” for increasing the permanent deformation resistance and the elastic modulus of the material. Among the different possible materials, polymers determined significant improvements in the road pavement performance. In this paper, the authors tested the adoption of a specifically engineered polymeric compound, in order to …

Materials scienceModified asphalt concrete0211 other engineering and technologiesModulus020101 civil engineeringContext (language use)02 engineering and technologyViscoelasticity0201 civil engineering021105 building & constructionSettore ICAR/04 - Strade Ferrovie Ed AeroportiGeneral Materials ScienceComposite materialPermanent deformationElastic modulusCivil and Structural Engineeringbusiness.industryMix-design Modified asphalt concrete Permanent deformation Polymeric compound Polymeric compoundBuilding and ConstructionMix-designAsphalt concretePolymeric compoundLow-density polyethyleneAsphaltDeformation (engineering)business
researchProduct

Experimental characterization of asphalt for an elasto-visco-plastic constitutive model.

2007

This paper describes a range of uniaxial creep tests that have been undertaken for a proprietary polymer modified asphalt, the procedure used to determine the parameters required for an elasto-visco-plastic constitutive model. Uniaxial compressive creep testing and creep recovery testing have been undertaken over a range of temperatures and stress conditions. Procedures used to determine the model parameters from the test data are detailed and parametric equations are developed to describe the model parameters as functions of the test conditions. Particular attention is given to the determination of the parameters related to visco-plastic flow and damage accumulation at high strain levels. …

Settore ICAR/04 - Strade Ferrovie Ed Aeroporticonstitutive modelling Asphalt concrete Finite Element Damage
researchProduct