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  • Item
    The Effect of Compaction Degree and Binder Content on Performance Properties of Asphalt Mixtures
    (Vilnius Gediminas Technical University, 2016-09-16) Hýzl, Petr; Dašek, Ondřej; Varaus, Michal; Stehlík, Dušan; Coufalík, Pavel; Dašková, Jaroslava; Coufalíková, Iva; Nekulová, Pavla
    The effect of compaction degree and binder content on performance properties of asphalt mixtures of an asphalt concrete type for wearing and binder courses are described in the paper. Measurements of stiffness modulus by two-point bending test on trapezoidal shaped specimens, fatigue characteristics, and resistance against frost cracking by thermal stress restrained specimen test have been performed on selected asphalt mixtures. The main aim of the experimental part was to determine to what extent the performance properties of the individual mixtures will be affected when decreasing the compaction degree by 3% in comparison to the optimal design, i.e. from 100% to 97% degree of compaction.
  • Item
    Measuring Tyre Rolling Noise at the Contact Patch
    (IOP Publishing, 2017-07-02) Kozák, Petr; Matuszková, Radka; Radimský, Michal; Kudrna, Jan
    The paper describes the development of the measuring device used to measure rolling noise at the tyre/road interface at the Institute of Road Structures, Faculty of Civil Engineering, Brno University of Technology. The measuring device combines a lightweight and a simple construction of American OBSI devices together with parameters of the CPX method used solely in Europe. This solution allows easy and fast mounting and demounting onto the measuring vehicle. The measuring device is used to the noise comparison of different wearing courses and different road equipment, like road marking.