Production of geopolymer adhesive paste material for NSM technique

2020 ◽  
Author(s):  
Noor S. Hadi ◽  
Wissam D. Salman ◽  
Safie Mahdi Oleiwi
Keyword(s):  
Nsm Technique

scholarly journals Numerical Analysis of the Flexural Response of Rc Beams Strengthened with NSM-CFRP

2018 ◽  
Vol 28 (3) ◽  
pp. 90-102
Author(s):  
Ahmed Khene ◽  
Habib Abdelhak Mesbah ◽  
Nasr-Eddine Chikh
Keyword(s):  
Parametric Study ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Near Surface ◽  
Flexural Response ◽  
Reinforced Polymer ◽  
Near Surface Mounted ◽  
Concrete Coating ◽  
A New Technique ◽  
Nsm Technique

Abstract In this study, we have chosen to use a new technique of reinforcement with composite materials, namely the near surface mounted technique (NSM). The NSM technique consists in inserting strips of carbon fiber reinforced polymer (CFRP) laminate into slits made beforehand at the level of the concrete coating of the elements to be reinforced. A numerical investigation was conducted on rectangular reinforced concrete beams reinforced with NSM-CFRP using the ATENA finite element code. A parametric study was also carried out in this research. The numerical results were compared with the experimental results of the beams tested by other researchers with the same reinforcement configurations. Overall, numerical behavior laws are rather well-suited to those obtained experimentally and the parametric study has also yielded interesting results.

NSM technique: Bond of CFRP rods and static/dynamic response of strengthened RC beams

2015 ◽  
Vol 127 ◽  
pp. 466-479 ◽  
Author(s):  
R. Capozucca ◽  
M.G. Blasi ◽  
V. Corina
Keyword(s):  
Dynamic Response ◽  
Rc Beams ◽  
Nsm Technique

scholarly journals Strengthening of Prism Beam by Using NSM Technique with Roots Planted in Concrete

2018 ◽  
Vol 9 (5) ◽  
pp. 383-386 ◽  
Author(s):  
Douread R. Hassen ◽  
◽  
Abdul Aziz Abdul Samad ◽  
Alyaa A.Azeez
Keyword(s):  
Nsm Technique

scholarly journals Shear Strengthening of R.C Beams with FRP Using (NSM) Technique

2019 ◽  
pp. 1-20
Author(s):  
Ahmed H. Abdel-Kareem ◽  
Ahmed S. Debaiky ◽  
Mohamed H. Makhlouf ◽  
M. Abdel-Baset
Keyword(s):  
Glass Fiber ◽  
Reference Beam ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymers ◽  
Experimental Program ◽  
Experimental Investigations ◽  
Fiber Reinforced ◽  
Near Surface ◽  
Glass Fiber Reinforced ◽  
Nsm Technique

This paper presents the experimental results of investigations the shear behavior of strengthened reinforced concrete beams by using glass fiber reinforced polymers (GFRP) rods. The strengthening system used GFRP rods were done by Near Surface Mounted technique (NSM), NSM technique contains a groove on the outside surface of the concrete member to adjust the depth to be less than the cover of the member. After cleaning, the epoxy paste was used to fill half of the groove's depth. The particular FRP element is then mounted in the groove. Finally, the groove is filled with epoxy and the too much epoxy is leveled with the outside surface of the concrete. This method enables the fiber reinforcement polymer FRP materials is covered completely by epoxy. The main objective of this research is to study the effect of NSM technique on shear resistance for RC beam. The parameters are considered in this study are effect of the material type used for strengthening (inner steel stirrups and external glass fiber stirrups), effect of FRP rods inclination on strengthened beams, shape with different end anchorage of FRP (strips and rods), and the effect of number of the used FRP rods. This paper involved 13 experimental investigations of half-scale R.C beams. The experimental program included two specimens strengthened with inner steel stirrups, eight specimens strengthened with stirrups of Glass Fiber Reinforced Polymer GFRP rods with the shape of different end anchorage and angle, and two specimens strengthened with externally bonded GFRP strips. The remaining un-strengthened specimen was assigned as a control one for comparison. The test results included ultimate capacity load, deflection, cracking, and mode of failure. All beams strengthened with GFRP rods showed an increase in the capacity ranging between 14% to 85% comparing to the reference beam, and beams strengthened with GFRP strips showed an increase in the capacity ranging between 7% to 22% comparing to the reference beam.

scholarly journals Flexural and Shear strengthening of RC beams with NSM technique-manually made CFRP bars

2017 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Mohammad Kazem Sharbatdar ◽  
M. Jaberi
Keyword(s):  
Rc Beams ◽  
Shear Strengthening ◽  
Nsm Technique

scholarly journals Application of Near Surface Mounted (NSM) technique for Seismic Retrofitting of Heritage Buildings

2020 ◽  
Vol 6 (1) ◽  
pp. 97-118
Author(s):  
Farhad Akhoundi ◽  
Reza Mohammadpour ◽  
Yaser Shahbazi ◽  
◽  
◽  
...  
Keyword(s):  
Seismic Retrofitting ◽  
Near Surface ◽  
Heritage Buildings ◽  
Near Surface Mounted ◽  
Nsm Technique

Improving seismic performance of old-type RC frames using NSM technique and FRP jackets

2017 ◽  
Vol 147 ◽  
pp. 705-723 ◽  
Author(s):  
Ali Seifi ◽  
Abdollah Hosseini ◽  
Mohammad Sadegh Marefat ◽  
Mohammad Sajjad Zareian
Keyword(s):  
Seismic Performance ◽  
Rc Frames ◽  
Nsm Technique
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