ABSTRACT: _The urban roads in Upper Egypt suffer from sewage-related issues due to the prolonged accumulation of wastewater—often exceeding 24 hours—on asphalt surfaces. Such exposure accelerates the deterioration of pavement layers, particularly in areas with limited drainage systems, high groundwater levels, and frequent leakage from aging sewage networks. Despite several studies addressing moisture damage in asphalt mixtures, limited evidence exists ... إقراء المزيد

In Egypt, recently, unconventional intersections have gained popularity among policymakers where conventional countermeasures that exemplify increasing cycle length, actuated signals, and signal coordination systems did not have the ability to overcome the operational problems of traffic congestion. The most important of these intersections is the intersection of the median U-turn (MUT). This research evaluated and investigated the operational performance of ... إقراء المزيد

Moisture damage remains one of the primary causes of premature asphalt pavement failure, leading to stripping and strength loss under prolonged water exposure. This study investigates the effect of using cement dust as a waste-derived filler compared to traditional limestone dust on the moisture susceptibility of asphalt mixtures. Both materials were selected based on their local availability and environmental benefits. ... إقراء المزيد

A sudden change in the pipeline's velocity results in a transient flow known as a "water hammer" in pipes. This phenomenon can cause negative and positive pressure in the pipeline and is often dangerous where the pipe can burst if the pressure is high enough. Therefore, it is necessary to study the variables affecting the water hammer to have a ... إقراء المزيد

Moisture presents a significant challenge for flexible pavements, as it can cause a range of issues, including asphalt stripping, leading to decreased durability and service life of the pavements. This, in turn, results in higher construction and maintenance costs. The primary objective of this research is to examine the moisture sensitivity of hot asphalt mixtures by incorporating medical plastic waste ... إقراء المزيد

There has been numerous research on the uses of treated wastewater that needs chlorine disinfection, but none have looked at the impacts of injecting nanobubbles (NBs) on the decomposition of residual chlorine. Gas NB injection in treated wastewater improves its properties. The kinetics of disinfectant decay could be impacted by changes in treated wastewater properties. This paper studies the effect ... إقراء المزيد

This study investigates the potential of two bitumen modifiers, high~~~~-density polyethylene (HDPE) and nano clay (NC), to enhance the rutting resistance of asphalt mixture. Four HDPE asphalt binders were prepared by mixing the HDPE at percentages of 2%, 4%, 6%, and 8% with the virgin binder, while four NC asphalt binders were produced by mixing the NC at percentages of ... إقراء المزيد

Nanobubbles (NBs) have potential properties, are environmentally friendly, and are sustainable to be used in a variety of applications: industries, agriculture, medical technology, and engineering applications such as water/wastewater treatment. This paper focuses on improving the characteristics of municipal secondary effluent (SE) utilizing oxygen bubbles (OBs), conventional coarse air bubbles (ABs), oxygen nanobubbles (ONBs), and air nanobubbles (ANBs). NBs were ... إقراء المزيد

Egypt's limited water resources and rising water demand are critical to the country's economy and food security. This predicament encouraged the development of non-traditional water resources in order to bridge the gap between supply and demand for water. treated wastewater (TWW) reuse for irrigation is a viable alternative for closing this gap and conserving traditional water resources for residential and ... إقراء المزيد

Egypt's desert covers more than two-thirds of the country's entire surface area. As a result, in recent years, the Egyptian government has tended to exploit those spaces by constructing new cities, such as New Sohag. The city of New Sohag was founded in the western desert near the Nile River. Although, these new cities appear to be a cure for ... إقراء المزيد