نتایج جستجو برای: N‌S‌M-G‌F‌R‌P

تعداد نتایج: 2097  

This study presents the results of an experimental program to investigate the effectiveness of an innovative combined FRP technique using combination of externally bonded (EB) FRP fabrics and near surface mounted (NSM) FRP rods for flexural strengthening of existing reinforced concrete (RC) two-wayslabs with low clear cover thickness. Three full-scale RC slabs (1500×1500×120 mm) were tested und...

Journal: :IOP conference series 2023

Abstract The behavior of eccentrically loaded RC columns strengthened by NSM steel and glass fiber reinforced polymer (GFRP) rebars is investigated in this study. A total six column specimens have been cast study with dimensions (150×150×1200) mm (width × height length). Two are unstrengthened considered as controls, while the other method using bars hybrid GFRP rebars. All tested under concent...

2008
Antonis Michael

Near-surface mounted (NSM) bars have been used for flexural strengthening of reinforced concrete members. The data available on this type of reinforcement technique are limited and typically, the bars or strips are embedded using an epoxy. Long term durability, abrasion resistance, and compatibility of the repair are important issues with this type of repair. One untested option for embedding t...

Journal: :Structures 2022

Reinforced concrete (RC) beams may require flexural strengthening due to the corrosion of reinforcing bars or changes in design load. The near surface mounted (NSM) and externally bonded (EB) techniques, using either glass carbon fibre-reinforced polymer (GFRP CFRP) composites, are used for deficient RC beams. However, strengthened with both techniques susceptible debonding failure FRP composit...

Journal: :Materials and Structures 2023

Abstract The preliminary findings of cyclic tests conducted on a series half-scale unstrengthened and strengthened masonry walls are presented. Reinforced were by (i) non-prestressed near surface mounted (NSM) glass fibre reinforced polymer (GFRP) bars (ii) prestressed NSM GFRP. Walls symmetrically vertical passing through both mortar bricks. structure was subjected to concurrent sustained unif...

خاصیت بازگشت‌پذیری آلیاژهای هوشمند حافظه‌دار (SMAهای) فوق الاستیک، ویژگی منحصر ‌به فردی است که از آن می‌توان در ساخت و تقویت اجزای بتن مسلح استفاده کرد. اجزای بتنی تقویت شده با این آلیاژها، قابلیت شکل‌پذیری و جذب انرژی بالاتری نسبت به تیرهای بتن مسلح معمولی دارند و هم‌چنین در چرخه‌های متوالی بارگذاری و باربرداری، خسارت کم‌تری نسبت به تیرهای بتن مسلح رایج متحمل می‌شوند. هدف از پژوهش پیش رو، بررس...

Journal: :Archives of Civil and Mechanical Engineering 2022

Abstract This paper presents the results of an experimental study on employing near surface mounted (NSM) fiber-reinforced polymer (FRP) reinforcement technique, and L?shape ribbed bars, for flexural strengthening lightweight reinforced concrete (RC) beams. 18 RC beams including 14 four normal-weight were designed. The strengthened with glass (GFRP) bars carbon (CFRP) laminate in bending tests....

Journal: :Civil Engineering Journal 2023

Bond-slip behaviour of glass fiber-reinforced polymer (GFRP) bars embedded in conventional concrete has been widely investigated. In contrast, the bond-slip near-surface mounted (NSM) GFRP bonded reinforced recycled aggregate (RAC) seems to be less explored, while materials have increasingly used due reasons environmental pollution and resource exhaustion. This study aimed experimentally theore...

2012
D. S. Lunn S. H. Rizkalla

ABSTRACT: This paper explores the behavior of infill masonry structures strengthened with a new type of Fiber Reinforced Polymer (FRP) strengthening system with high fracture strain know as PET (Polyethylene Teraphthalate) and a new near-surface mounted (NSM) Carbon fiber strengthening system using a cementitious material as the adhesive as compared to a Glass Fiber (GFRP) strengthening system ...

Journal: :Periodica Polytechnica-civil Engineering 2023

The double strap joint splicing of glass fiber reinforced polymer (GFRP) bars for concrete (RC) beams strengthening, applying the near surface mounting (NSM) method, has been proposed in paper. method consists application supplementary GFRP symmetrically positioned cut-off zone main reinforcement. performances this have experimentally tested most unfavorable case reinforcement maximal bending m...

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