Recent developments in tunneling have stimulated design practitioners to more effectively
utilize the underground spaces. However, tunneling at shallow depth in soft grounds gives …

Organosilane (OS) is a silicon-based coupling agent capable of producing hydrophobicity in
soils. This study evaluated the applicability of OS in reducing the freeze–thaw impacts on …

Approximately 110,000 km of granular roadways exist in the 183,500 km road network in the
State of Iowa, and operation and maintenance of these roadways costs roughly US $270 …

A study was conducted to evaluate the efficacy of recycled concrete aggregate (RCA) and off-
specification fly ash (FA) in remediating acid mine drainage (AMD). The pH and AMD …

This research intends to evaluate the effects of the waste polyethylene terephthalate (PET),
antistripping agents (ASA), and ground tire rubber (GTR) on the performance properties of …

The pavement performance system depends on various factors including traffic loading,
climate conditions, and material properties. Variations in ambient temperatures and …

This study assessed the efficacy of water leach tests (WLTs) and pH-static leach tests in
evaluating the leaching behavior of distinctly carbonated recycled concrete aggregates …

Throughout the last few decades, the pavement industry has slowly transitioned from
construction and rehabilitation to pavement preservation. Pavement preservation can be …

Characteristics of the surface aggregate materials are very important for the serviceability
and performance of granular roads. Mechanical properties such as strength, abrasion …

A recently-developed granular road stabilization method was applied to four test sections in
different Iowa counties. This new method uses an optimized target gradation achieved by …