Abstract: Granular volcanic ash material is spread over considerable areas of Yemen including urban and suburban areas. Due to the inferior properties of this material in its natural state, it cannot be used in base and subbase ...

Abstract: The rheological properties of asphalt binder have a great influence on asphalt pavement performance, particularly in terms of rutting, thermal, and fatigue cracking. The current asphalt specifications, such as those used ...

Abstract: Neat asphalt binders lack the proper viscoelastic balance that usually occurs when an effective elastic network is created by molecular association. It is hypothesized that proper viscoelastic balance can be formed by ...

Abstract: Temperature is one of the most important factors affecting the design and performance of pavement. Temperature variations within the pavement structure contribute in many different ways to distress and possible failure of ...

Abstract: A method of calculating soil cover requirements for horizontally bent buried pipelines is described. In sequence, the results of a comprehensive three-dimensional finite element analysis are used ...

Abstract: This paper discusses the stability of underground pipelines with preformed vertical bends buried in sandy soil. More specifically, the minimum cover height required to prevent the pipe from ...