Abstract The performance of the asphalt mixture is affected by characteristics and gradation aggregate. Polymer-modified has been widely used to overcome road pavement damage such as cracking, spalling, yielding, due deformation grooves, curling, or rutting. used, both from plastomers elastomeric types. Elvaloy modification resulted conventional mixing process 60/70 with additives Dupont that a...

Today, rapid economic and industrial growth generates increasing amounts of waste materials such as waste tyre rubber. Attempts to inspire a green technology which is more environmentally friendly that can produce economic value are a major consideration in the utilization of waste materials. The aim of this study is to evaluate the effect of waste tyre rubber (crumb rubber modifier (CRM)), in ...

Asphalt is a visco-elastic material having properties of elastic solid at low temperature and viscous liquid at high temperature. Properties of asphalt binder depend upon temperature, rate of loading and aging conditions. Although asphalt binder is only 4-5 % of asphalt concrete mix by weight but it plays a vital role in defining the pavement performance. That is, pavement response is heavily d...

in recent decades, economic development and population growth in the world has led to the expansion of road networks. therefore the use of optimum methods for repairing and maintenance of these roads is considered as an important value. today one of the options in this regard, is the use of asphalt recycling technology. the present study which took place in the summer of 2015 in iran, lorestan ...

This study has investigated the creep properties of asphaltic concrete modified with different dosages of waste polyethylene terephthalate (PET) in two different ranges of size. Uniaxial dynamic creep test at 40°C was conducted on the cylindrical specimens of the mixtures. The load was applied in two different frequencies of 0.5 and 5Hz. Creep test results showed that the accumulated strain und...

Previous research has shown that composite shape-stabilized phase change material (CPCM) has a remarkable capacity for thermal storage and stabilization, and it can be directly applied to highway construction without leakage. However, recent studies on temperature changing behaviors of CPCM and asphalt mixture cannot intuitively reflect the thermoregulation mechanism and efficiency of CPCM on a...

The objective of this study is to develop a modified asphalt with excellent rheology and workability. Buton rock (BRA) composite warm mix (BCMWMA) was prepared, its rheological properties micromechanisms were investigated. Initially, (WMA) prepared using 3 wt% Sasobit, then four BCMWMA samples by blending 5 20 BRA (with intervals). Subsequently, the microscopic morphology modification mechanism...