Recycled asphalt pavement (RAP) has been increasingly used as an energy efficient and environmentally friendly paving material is currently the most reused recycled in United States. RAP new hot mix (HMA) mixtures base courses for construction. When a course material, presence of may cause excessive deformation under traffic loading. Geocell, three-dimensional (3D) polymeric geosynthetic cells, was proposed this study to minimize by confining material. Full-scale accelerated tests were...

Geogrid (uniaxial or biaxial) is one type of geosynthetics that has been successfully used in slopes, walls, roads, and other applications. The main application biaxial geogrid to stabilize soft subgrade reinforce weak base courses by providing lateral confinement. confinement due the interaction between aggregates ribs depends on geometry properties geogrid, such as rib shape apertures size, stiffness ribs, aggregates. Research shown cannot provide uniform tensile resistance all directions....

Geocells, one type of geosynthetics manufactured in a form three-dimensional interconnected cells, have been reported to effectively provide lateral confinement infill material increase the modulus and bearing capacity base courses. Most studies so far focused on behavior geocell-reinforced bases under static loading. Geocells used for pavement applications are subjected repeated Limited conducted investigate performance In this study, single multiple granular with three types materials...

Full-scale trafficking tests were conducted to evaluate the effect of novel polymeric-alloy geocell reinforcement on base courses for low-volume unpaved roads over weak subgrade. Three types in-fill materials—crushed limestone (AB-3) aggregate, quarry waste (QW), and recycled asphalt pavement (RAP)—were used a subgrade layer consisting A-7-6 clay. Four sections that included one unreinforced control section AB-3 aggregate 30 cm thick three 17-cm geocell-reinforced tested under single-axle...

Geogrids have been successfully used to improve soft subgrade and reinforce weak base courses for low-volume roads by providing lateral confinement. However, uniaxial biaxial geogrids with rectangular or square apertures cannot provide uniform resistance in all directions. A new geogrid product triangular was developed introduced into the market overcome this problem. The triangular-aperture has a more stable grid structure can directions compared geogrids. performance of geogrid-reinforced...

Geosynthetics have been used for base reinforcement since 1970s. Numerous research has already carried out planar geosynthetic but limited conducted three-dimensional geocell reinforcement. Literature review also demonstrated a significant gap between the applications and theories of outlining need more research. This study was to investigate behavior reinforced bases using single under static repeated loads on loading plate. The experimental results show that could increase stiffness by...

Geogrids have been successfully used to improve soft subgrade and reinforce weak base course by providing lateral confinement. However, uniaxial biaxial geogrids cannot provide uniform resistance in all directions. A new product termed "Triaxial geogrid" was developed overcome this limitation. The triaxial geogrid is expected a more stable grid structure directions as compared with geogrids. the effects of on performance reinforced bases not well evaluated. In study, unreinforced...

Resilient modulus of subgrade is often necessary for pavement design and determined by cyclic triaxial tests or correlation with other laboratory insitu test results (such as CBR DCP data). Cyclic plate loading were conducted in this study to determine the resilient a weak subgrade. The was made 75% Kansas River sand 25% kaolin compacted at wet optimum large geotechnical testing box (2m x 2.2m 2m). This first evaluated then tested under 30-cm diameter rigid four different magnitudes loading....

Currently, great emphasis is placed on sustainable construction and infrastructure with green technologies. As a result, the demand for environmental friendly roads increasing day by day. More technologies roadway are needed. One way to construct environmentally sound through use of recycled asphalt pavement (RAP) materials as base course. However, limited research has been done quantify its structural capacity engineering properties. It expected that RAP courses may have excessive...

Freeze-thaw (F-T) cycles are a major cause of pavement distress in seasonal frost regions, and the presence fines bases can accelerate degradation induced by cyclic freeze thaw. Among countermeasures used to mitigate F-T damages pavements, geocell-reinforced be an effective solution mitigating damage cold region roads. However, there is almost no research dedicated understanding potential benefit geocells underlying mechanisms this regard. This study employed custom-made model test device...

One of the issues with existing rail network is cross-level issue, where two parallel tracks have unwanted elevation differences, risking train derailment. The speed trains typically reduced in those identified areas but still, geometric irregularity causes body vibrations reduces riding comfort. Once that difference exceeds a design limit operation ceases for safety. Conventional solutions to this are jacking up track by re-filling material inside and injecting expandable foam. None...