نتایج جستجو برای: الیاف frp
تعداد نتایج: 7717 فیلتر نتایج به سال:
A new layered 4-node, 24-degrees of freedom rectangular composite plate element is developed in this paper for nonlinear finite element analyses of FRP-strengthened RC slabs. The layered approach is used to form an integrated plate element for modelling of concrete, FRP, adhesive layer and steel reinforcement with a perfect bond assumption between each layer. Timoshenko’s composite beam functio...
The performance of the interface between fiber reinforced polymer (FRP) composites and concrete is one of the key factors affecting the behavior of strengthened reinforced concrete (RC) structures. Existing laboratory research has shown that RC beams strengthened with FRP sheets usually fail because of either debonding of the impregnated fabric from the concrete substrate or fracture of the FRP...
از زمان های دور انسان از الیاف های کامپوزیت در شکل های مختلف استفاده کرده است. با شروع قرن ( 20 ) بتن های مسلح با فولاد فرم جدید کامپوزیت های سازه ای را درآوردند. در میانه صده پیشرفت کامپوزیت های پلاستیک به عنوان الیاف های کامپوزیت جدید و موثری دیده شدند که frp خوانده می شوند، این مصالح جدید رشد یافته به طور برجسته ای با نسبت مقاومت به وزن بالا و دوام در محیط های خوردگی را توصیف می کنند، که آن ...
Throughout the last 25 years, computational chemistry based on quantum mechanics has been applied to the investigation of reaction kinetics in free radical polymerization (FRP) with growing interest. Nowadays, quantum chemistry (QC) can be considered a powerful and cost-effective tool for the kinetic characterization of many individual reactions in FRP, especially those that cannot yet be fully...
Four putative open reading frames (ORFs) were previously identified in the regions flanking the Streptococcus mutans GS-5 fructosyltransferase (FTF) gene. One of these, ORF 3, appeared to code for a low-molecular-mass protein containing amino acid sequences sharing homology with several Gram-positive bacterial DNA-binding proteins and it was suggested that the ORF 3 gene product might be an FTF...
In unreinforced masonry walls, failure due to out -of-plane bending causes the majority of the material damages and loss of human life. Therefore, the development of effective strengthening techniques needs to be addressed. Near-surface mounted (NSM) FRP rods are now emerging as a promising technique for increasing flexural and shear strength of structural members. The aim of this research prog...
Remote Detection of Debonding in FRP-strengthened Concrete Structures Using Acoustic-Laser Technique
Abstract Fiber-reinforced polymer (FRP) strengthening and retro fi tting of concrete elements, such as beams, columns, slabs, and bridge decks, have become increasingly popular. Nonetheless, rapid and reliable nondestructive testing techniques (NDT) that are capable of remotely assessing in-situ integrity of retro fi tted systems are needed. Development of a robust NDT method that provides an a...
Functional Reactive Programming (FRP) is an approach to reactive programming where systems are structured as networks of functions operating on signals (time-varying values). FRP is based on the synchronous data-flow paradigm and supports both (an approximation to) continuous-time and discrete-time signals (hybrid systems). What sets FRP apart from most other languages for similar applications ...
The use of fiber reinforced polymers (FRP) for reinforcement of aging and deteriorating concrete members has emerged as a viable and cost effective alternative to traditional repair and strengthening techniques to upgrade deficient structures to meet today’s design standards (Crasto et al., 1996; Myers et al., 2000). The load carrying ability of structures such as beams and columns can be enhan...
Hillslope runoff and leaching studies, catchment-scale water quality measurements and P retention and release characteristics of stream bank and catchment soils were used to better understand reasons behind the reported ineffectiveness of riparian buffers for phosphorus (P) management in catchments with sandy soils from south-west Western Australia (WA). Catchment-scale water quality measuremen...
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