Steel-strip reinforced earth walls stabilize through the pullout resistance of reinforcements. Soil dilation during ribbed reinforcements may contribute to evolution resistance; however, few studies have clarified this mechanism by investigating how soils behave with increasing displacement. The ribs enhance resistance, although influence rib dimensions on displacement has not been sufficiently...

In this study, the bond stress distribution and bond–slip model of steel bars iron tailing sand recycled aggregate concrete (ITRAC) were investigated using central pullout tests on 33 ITRAC bonded specimens. The results show three failure modes for specimens: splitting, pullout, splitting–pullout. Compared with maximum strength nature (NAC), specimens increased by 23.12% 6.08–23.96%, respective...

In this study, three-dimensional numerical analyses were carried out to investigate the effects of reinforcement pullout resistance including facing connection strength on behavior geosynthetic-reinforced soil (GRS) piers under a service load condition. Three different investigated in which simulated levels resistance. Each pier had two cases with stiffness J and spacing Sv but same ratio J/Sv....

The pullout resistance of reinforcement is an important parameter in the design reinforced retaining structures. At incipient failure, kinematics failure a structure shows that sliding mass soil pulls obliquely along slip surface. response to oblique pull can be considered made up equivalent axial and transverse components pull. Accordingly, tests were conducted on geostrip, metal strip (both s...

Molecular dynamics (MD) simulations under transverse shear, uniaxial compression, and pullout loading configurations are reported for multiwall carbon nanotubes (MWCNTs) with different fraction of interwall sp3 bonds. The interwall shear coupling in MWCNTs is shown to have a strong influence on load transfer and compressive load carrying capacity. A new continuum shear-coupled-shell model is de...

In order to investigate the pullout resistance of Horizontal-Vertical reinforcement, a “denti-geogrid” was assembled by bonding “denti-strip” with geogrid and tests were carried out. Subsequently, analytical approaches investigated calculate on basis surface sliding model, Perterson Anderson’s Jewell’s Chai’s proposed stress summation model. Moreover, new index named “scale factor” suggested re...

This paper aims to compare the tribo-mechanical properties and structure–property relationships of a wear resistant cobalt-based alloy produced via two different manufacturing routes, namely sand casting and powder consolidation by hot isostatic pressing (HIPing). The alloy had a nominal wt % composition of Co–33Cr–17.5W–2.5C, which is similar to the composition of commercially available Stelli...

BACKGROUND Expandable screws have greater pullout strength than conventional screws. The purpose of this study was to compare the biomechanical stability provided by a new built-in expandable anterior spinal fixation system with that of 2 commonly used anterior fixation systems, the Z-Plate and the Kaneda, in a porcine partial vertebral corpectomy model. METHODS Eighteen porcine thoracolumbar...

The mechanical behavior of carbon nanotube (CNT)-based fibers and nanocomposites depends intimately on the shear interactions between adjacent tubes. We have applied an experimental-computational approach to investigate the shear interactions between adjacent CNTs within individual double-walled nanotube (DWNT) bundles. The force required to pull out an inner bundle of DWNTs from an outer shell...