It was determined, that as the shearing resistance, tensile strength and stiffness of the backfill are reduced, increases in coal pillar strength is due more to the confinement aspect of an underground mine rather than the strength properties of the material itself.
A numerical analysis of these models further showed that, for LWAC and normal concrete with the same strength and FRP confinement, the mechanical behavior was different and found to heavily depend on the FRP confinement aspect properties and the types of the light-weight aggregate.
Behavior of rectangular concrete columns confined with FRP composites depends on several parameters, including unconfined concrete strength, confinement level, aspect ratio of cross-section (defined as the depth/width of the cross-section), and the sharpness of the section corners.
Reconnaissance reports on structures damaged or collapsed by severe earthquakes have revealed several common characteristics in their structural members and systems, such as insufficient reinforcement details in beam-column joints and transverse confinements, low aspect ratios, soft and or weak stories, and eccentric plans.
The effects of the amount of confinement, cross-sectional aspect ratio and corner radius were investigated experimentally through the tests of 24 concrete-filled FRP tubes (CFFTs) that were manufactured using unidirectional carbon fiber sheets and UHSC with 108 MPa average compressive strength.
On his time imprisoned on Robben Island (from Nelson Mandela's autobiography, The Long Walk to Freedom, 1994): "I found solitary confinement the most forbidding aspect of prison life.
In this paper, effects of unconfined concrete strength, confinement level and the aspect ratio of cross-section are studied.
NSTX is a proof-of-principle experiment aimed at exploring the physics of the 'spherical torus' (ST) configuration, which is predicted to exhibit more efficient magnetic confinement than conventional large aspect ratio tokamaks, among other advantages.
Neither White House or Justice Department officials would say whether Mr. Clinton and Ms. Reno ever discussed the terms of Dr. Lee's confinement or other legal aspects of the case, although there was no indication that White House officials ever complained to the department.
It was not until very recently that design specifications and codes of practice, like AASHTO LRFD, started realizing the importance of introducing extreme event load cases that necessitates accounting for advanced behavioral aspects like confinement.
The increase in band gap with decrease in particles size is the most identified aspect of quantum confinement in semiconductors.
