Abstract Determination of the stress state in concrete structures is a very important, but difficult task. In case new structures, it possible to easily instal measurement instruments which can provide important data as part real-time monitoring. However, evaluation stresses existing much more challenging. Currently, relief methods are well-established approach for actual structures. The so-cal...

The use of unbounded tendons is common in prestressed concrete structures and evaluation of the stress increase in unbonded tendons at ultimate flexural strength of such structure has posed a great challenge over the years. Based on the bending experiment for two-span continuous post-tension beams with unbounded tendons and externally applied CFRP sheets, the monitoring of the stress increment ...

BACKGROUND We hypothesized that using a cadaveric Lisfranc ligamentous injury model, abduction stress would provoke greater post-injury motion than axial weightbearing between the medial cuneiform (MC1) and the base of the second metatarsal (MT2). Second, we hypothesized that both a tensioned suture-button device and a rigid screw fixation method could maintain a reduction and similarly restrai...

Abstract In this study, the response of ten composite post-tensioned concrete beams topped by a reinforced deck with adequate reinforcing shear connectors is investigated. Depending on compressive strength slab (20, 30, and 40 MPa), are grouped into three categories. Seven these exposed to fire attack 700 800 °C temperature simultaneously or without presence uniformly distributed sustained stat...

The problem of concrete bridge deck deterioration on many of our newer as well as older bridges is severe, somewhat perplexing as to cause, and difficult to solve. Furthermore, the cost to highway agencies for their repair, and the cost of delay to the highway user, can be extremely large. The use of precast, prestressed concrete for bridge decks is a con­ cept of construction or reconstruction...

Commercial finite element software generally includes dedicated numerical models for the nonlinear response of concrete under loading. These models usually include a smeared crack analogy to account for the relatively poor tensile strength of concrete, a plasticity algorithm to facilitate concrete crushing in compression regions and a method of specifying the amount, the distribution and the or...