Opportunities of light jacketing with Fibre Reinforced Cementitious Composites for seismic retrofitting of existing RC columns

2021 ◽  
pp. 113717
Author(s):  
Marta Del Zoppo ◽  
Costantino Menna ◽  
Marco Di Ludovico ◽  
Domenico Asprone ◽  
Andrea Prota
Keyword(s):  
Seismic Retrofitting ◽  
Cementitious Composites ◽  
Rc Columns

scholarly journals Tailoring Confining Jacket for Concrete Column Using Ultra High Performance-Fiber Reinforced Cementitious Composites (UHP-FRCC) with High Volume Fly Ash (HVFA)

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4010 ◽  
Author(s):  
Alessandro P. Fantilli ◽  
Lucia Paternesi Meloni ◽  
Tomoya Nishiwaki ◽  
Go Igarashi
Keyword(s):  
Fly Ash ◽  
High Performance ◽  
Mechanical Response ◽  
High Volume ◽  
Cementitious Materials ◽  
Seismic Retrofitting ◽  
Cementitious Composites ◽  
High Performance Fiber ◽  
Mechanical Approach ◽  
Mechanical Performances

Ultra-High Performance Fibre-Reinforced Cementitious Composites (UHP-FRCC) show excellent mechanical performances in terms of strength, ductility, and durability. Therefore, these cementitious materials have been successfully used for repairing, strengthening, and seismic retrofitting of old structures. However, UHP-FRCCs are not always environmental friendly products, especially in terms of the initial cost, due to the large quantity of cement that is contained in the mixture. Different rates of fly ash substitute herein part of the cement, and the new UHP-FRCCs are used to retrofit concrete columns to overcome this problem. To simulate the mechanical response of these columns, cylindrical specimens, which are made of normal concrete and reinforced with different UHP-FRCC jackets, are tested in uniaxial compression. Relationships between the size of the jacket, the percentage of cement replaced by fly ash, and the strength of the columns are measured and analyzed by means of the eco-mechanical approach. As a result, a replacement of approximately 50% of cement with fly ash, and a suitable thickness of the UHP-FRCC jacket, might ensure the lowest environmental impact without compromising the mechanical performances.

scholarly journals Optimal design algorithm for seismic retrofitting of RC columns with steel jacketing technique

2020 ◽  
Vol 44 ◽  
pp. 639-646 ◽  
Author(s):  
Fabio Di Trapani ◽  
Marzia Malavisi ◽  
Giuseppe Carlo Marano ◽  
Rita Greco ◽  
Marco Filippo Ferrotto
Keyword(s):  
Optimal Design ◽  
Seismic Retrofitting ◽  
Rc Columns ◽  
Design Algorithm

INVESTIGATION OF THE STRENGTH-DUCTILITY-TYPE SEISMIC RETROFITTING TECHNIQUE FOR EXISTING RC COLUMNS USING PC BAR PRESTRESSING AND STEEL PLATES

2020 ◽  
Vol 85 (778) ◽  
pp. 1633-1642
Author(s):  
Kozo NAKADA ◽  
Tetsuo YAMAKAWA ◽  
Kazuo KANEDA ◽  
Masayuki KUROKI ◽  
Mohammad Zahid NOORI ◽  
...  
Keyword(s):  
Steel Plates ◽  
Seismic Retrofitting ◽  
Rc Columns

Seismic retrofitting of old-type RC columns with different lap splices by NSM GFRP and steel bars

2017 ◽  
Vol 27 (2) ◽  
pp. e1413 ◽  
Author(s):  
Ali Seifi ◽  
Abdollah Hosseini ◽  
Mohammad Sadegh Marefat ◽  
Mohammad Khanmohammadi
Keyword(s):  
Seismic Retrofitting ◽  
Rc Columns ◽  
Lap Splices ◽  
Steel Bars

scholarly journals AN EXPERIMENTAL STUDY ON SEISMIC RETROFITTING METHOD OF RC COLUMNS REINFORCED WITH A STEEL BELT

2009 ◽  
Vol 65 (3) ◽  
pp. 343-352
Author(s):  
Shinichi TATSUKI ◽  
Takeshi TSUYOSHI ◽  
Tadayoshi ISHIBASHI
Keyword(s):  
Experimental Study ◽  
Seismic Retrofitting ◽  
Rc Columns
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