Abstract: Cyclic triaxial tests were performed on a well‐graded railroad ballast with a maximum particle size of 38 mm (1.5 in.). Samples were compacted in a split mold to reproduceable density states and subjected to repeated ...

Abstract: Polyethylene pipes are commonly used in pipeline systems. Current methods used to determine the pipe pullout capacity do not consider the effects of diameter changes and cyclic movements that the pipelines may experience. ...

Abstract: Cast iron pipe came into heavy use during the latter half of the 19th century and numerous utility companies formed extensive pipeline networks using cast iron pipes until 1940s. Later cast iron pipe was superseded by ...

Abstract: It is a common belief that negative incremental pore pressures occur during undrained triaxial compression loading of clays with overconsolidation ratios greater than approximately 4. While this behavior is characteristic ...

Abstract: Design of track structural components and foundations is based upon design loads higher than the nominal static values. These design loads generally have been determined using dynamic impact factors as multipliers of the ...

Abstract: Two types of polyethylene are used for pipeline systems: medium density polyethylene and high density polyethylene. A polyethylene pipe, being a thermoplastic, softens on heating and hardens on cooling. Because of the ...

Abstract: Cured-in-place linings (CIPLs) are flexible fiber-reinforced polymer linings used to rehabilitate aging pipelines in situ. They also can strengthen utilities against transient and permanent ground deformation caused by ...

Abstract: Permanent ground deformation is a severe hazard for continuous buried pipelines. This technical paper presents results from four centrifuge tests designed to investigate the influence of pipe-fault orientation on pipe ...