To analyze the effect of polyol on polyurethane (PU)-modified asphalt, three different soft segments were synthesized, and we utilized reaction MDI (diphenylmethane diisocyanate) with PU650, PU1000, PU1400. With respect to molecular weight, performance modified asphalt was analyzed, by using polyurethanes. PU samples, Fourier transform infrared spectroscopy (FTIR) tests gel permeation chromatog...

Nanoclays are new generation of processed clays of interest in a wide range of high performance composites. In other words, nanoclay is defined as a clay that can be modified to make the clay complexes compatible with organic monomers and polymers. Here, it can be said that the polymeric nanocomposites are among the most exciting and promising classes of materials discovered recently. A number ...

Nano-calcium carbonate is a new type of nanomaterial, which has great influence in many fields. In order to explore the nano-calcium on petroleum asphalt, an experiment was designed analyze application improving road asphalt technology. This article explores methods preparing and pitch, understands characteristics two materials, then draws mixing pitch: one freezing disintegrating, other stepwi...

In order to study the micro-aging mechanism of lignin-modified asphalt, different asphalt samples were prepared with lignin content 0% and 12% by mass. The conventional index test high-temperature dynamic shear rheological used analyze samples. change law performance modified thermal oxygen aging time. results show that adding appropriate amount each will increase penetration ductility base red...

A significant problem associated with asphalt concrete mixtures is the lack of durability resulting from an inadequate asphalt cement content. Additional asphalt cement added to increase durability results in flushing, bleeding and a significant loss In stability. Fibers have been used in stone matrix asphalt and open-graded friction course pavements successfully throughout Europe to allow high...

Basic oxygen furnace slag (BOF) is widely used in road construction, but there is a lack of characteristics in different asphalt mixtures. This study investigates the properties of hot-mixed asphalt (HMA), containing stone mastic asphalt (SMA), porous asphalt (PA), and dense-graded BOF as a partial substitution for natural aggregates. The purpose of this study is to evaluate various BOF slag co...