Subgrade soil stabilization is one of the primary and major processes in the construction of any highway; also environmental authorities are concerned about the growing amount of polyethylene (PET) bottles produced by household sectors. This research in order to study effect of adding recycled polyester fiber on soil engineering properties, especially shear strength and California Bearing Ratio...

1.1 Background The California Bearing ratio (CBR) test has been widely used in pavement design since mid 1940’s. It is a relative measure of subgrade soil or base/subbase aggregate strength. The Virginia Department of Transportation (VDOT) has been using its own Virginia Test Method-8 (VTM-8) to perform CBR testing. On the other hand, private industry and other DOT’s are using AASHTO (American ...

Palm ash is the waste from palm combustion which contains a lot of silicate. In addition, also inorganic cations such as potassium and sodium. pozzolanic material, non-binding material cement, but active Silica Oxide (SiO2) compounds when reacted with free lime or calcium hydroxide (Ca (OH2)) water will form materials namely Hydrate. this study we use has been stated to have good soil improveme...

Expansive Black cotton clay soils are widely distributed worldwide, and a significant damage to infrastructure buildigs. It is common practice around the world stabilize black soil using fly ash improve strength of stabilized sub- base sub grade soil. Soil stabilization improvement or bearing capacity by controlled compaction, proportioning addition suitable admixtures stabilizers. The extremel...

High content of organic matter and fibre within peat results in a high degree porosity; causing to have low bearing capacity. This study focuses on the application nylon as reinforcing material with fly ash chemical stabilizer enhance strength peat. The standard proctor tests were conducted obtain optimum moisture (OMC) for all samples which these OMC is then used sample preparation both Unconf...

The first principle in construction works is to have resistant land build a building. Soil improvement one of the common methods improving geotechnical properties and increasing usability soil materials. One ways improve transform into place where possible modify by using additives it. use waste as material physical has attracted attention researchers. Among these wastes, we can mention rubber ...

Highly plastic expansive clays swell or shrink due to change in moisture content and they often have very low bearing capacity. Construction of engineering structures particularly pavements lightweight buildings on problematic soils such as highly may create severe structural problems poor properties that kind soil. This study focused the influence fly ash strength which are their undesirable c...

Base isolators and fluid viscous dampers are viable protective devices that have been commonly considered in the seismic protection of civil engineering structures. However, optimal design these remains a tedious iterative undertaking due to uncertainty ground motions, nonlinear behavior structure, its change dynamic characteristics (i.e., effective stiffness damping ratio) under each new desig...