Flexural Behavior of Reinforced Concrete (RC) Beams Retrofitted with Steel Plates Under Sustaining Loads - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Flexural Behavior of Reinforced Concrete (RC) Beams Retrofitted with Steel Plates Under Sustaining Loads write by Kee Hung Wong. This book was released on 2014. Flexural Behavior of Reinforced Concrete (RC) Beams Retrofitted with Steel Plates Under Sustaining Loads available in PDF, EPUB and Kindle.
Flexural Behavior of Reinforced Concrete Beams Strengthened with Externally Bonded Hybrid Systems
Flexural Behavior of Reinforced Concrete Beams Strengthened with Externally Bonded Hybrid Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Flexural Behavior of Reinforced Concrete Beams Strengthened with Externally Bonded Hybrid Systems write by Abubakr Ahmed Abdelall Mohammed. This book was released on 2017. Flexural Behavior of Reinforced Concrete Beams Strengthened with Externally Bonded Hybrid Systems available in PDF, EPUB and Kindle. "The demand for strengthening of aging reinforced concrete (RC) structures are continuously rising. Carbon fiber reinforced polymers (CFRP) are the most widely used externally bonded-reinforcing (EBR) materials for strengthening and retrofitting of RC structural members. The use of high strength galvanized steel mesh (GSM) strengthening material has recently gained some acceptance. However, Both CFRP and GSM have high strength but have low ductility. Recently developed aluminum alloys (AA) have high ductility and some desirable characteristics that may overcome some of the shortcomings of CFRP and GSM. Combining AA with CFRP and GSM will result in a hybrid material with balanced strength and ductility. Therefore, the major aim of this research is to develop a hybrid ductile and strong retrofitting system by combining AA plates with GSM and CFRP laminates to strengthen RC beams in flexure. A comprehensive experimental program was carried out to determine the tensile strength and the bond strength of the hybrid system. Fifteen-coupon specimens were tested for tensile strength, six specimens of concrete prisms for bond strength and 25 T-beam specimens for flexural strength under a four-point loading. Results showed an increase in the flexural capacity of the strengthened specimen ranging from 10% to 77% compared to the control beam and a decline in ductility of 13% to 59% compared to the un-strengthened specimen. Furthermore, analytical models based on ACI 440.2R-08 guidelines were employed to capture the flexural behavior of the tested specimens. Experimental results correlated well with the analytical predictions in a range of 30% of the experimental values. The study concluded that the newly proposed hybrid systems are promising systems for the improvement of the flexural behavior (strength and ductility) of RC beams."--Abstract.
Behavior of Reinforced Concrete Beams Retrofitted in Flexure Using CFRP-NSM Technique
Behavior of Reinforced Concrete Beams Retrofitted in Flexure Using CFRP-NSM Technique - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Behavior of Reinforced Concrete Beams Retrofitted in Flexure Using CFRP-NSM Technique write by . This book was released on 2015. Behavior of Reinforced Concrete Beams Retrofitted in Flexure Using CFRP-NSM Technique available in PDF, EPUB and Kindle. A variety of retrofitting methods are used to upgrade existing structures. For example, steel plates and Fiber Reinforced Polymer (FRP) jackets are externally bonded to members to increase their capacity in flexure and shear. However, due to the issue of corrosion these strengthening systems may lose their efficiency with time. FRP materials have been used to strengthen many structural components of different shapes and types. FRP jackets, FRP Strips, and FRP rods have commonly been used to rehabilitate existing structural components. The many advantages of using FRP as strengthening materials have made this material an attractive alternative: advantages such as lightweight, high strength, and ease of setting up. Among the many applications using FRP, Near Surface Mounted -- Fiber Reinforced polymer (NSM-FRP) is a promising technique used to strengthen concrete members. However, de-bonding issues have to be overcome to make this technique efficient and reliable. The NSM-FRP technique consists of making a groove along the surface of the concrete member to be retrofitted with depth less than the cover of the member. After cleaning the groove, epoxy paste is used to fill two-thirds of the groove's depth. The FRP element is then mounted in the groove. Finally, the groove is filled with epoxy and the excessive epoxy is leveled with surface of the concrete. This technique makes the FRP material completely covered by epoxy in the cover of the concrete. This method can be used for strengthening both the positive and negative moment regions of girders and slabs. Groove size, paste, concrete, and rods properties are the main variables that control the efficiency of the NSM-FRP rods. The main objective of this research project is to determine the behavior of reinforced concrete beams that are strengthened with NSM-CFRP reinforcement bars. In this research project, the bond characteristics of NSM-CFRP reinforcement bars are first determined from pullout tests. Then, NSM-CFRP rods are installed in reinforced concrete beams and the beams are tested. Loads, strains, and deflections are measured and theoretical and measured capacities are compared. Finally, the reliability and efficiency of using NSM-CFRP rods technique in retrofitting existing structures is observed.
Strengthening of Reinforced Concrete Structures
Strengthening of Reinforced Concrete Structures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Strengthening of Reinforced Concrete Structures write by L C Hollaway. This book was released on 1999-03-05. Strengthening of Reinforced Concrete Structures available in PDF, EPUB and Kindle. The in situ rehabilitation or upgrading of reinforced concrete members using bonded steel plates is an effective, convenient and economic method of improving structural performance. However, disadvantages inherent in the use of steel have stimulated research into the possibility of using fibre reinforced polymer (FRP) materials in its place, providing a non-corrosive, more versatile strengthening system. This book presents a detailed study of the flexural strengthening of reinforced and prestressed concrete members using fibre reinforces polymer composite plates. It is based to a large extent on material developed or provided by the consortium which studied the technology of plate bonding to upgrade structural units using carbon fibre / polymer composite materials. The research and trial tests were undertaken as part of the ROBUST project, one of several ventures in the UK Government's DTI-LINK Structural Composites Programme. The book has been designed for practising structural and civil engineers seeking to understand the principles and design technology of plate bonding, and for final year undergraduate and postgraduate engineers studying the principles of highway and bridge engineering and structural engineering. Detailed study of the flexural strengthening of reinforced and prestressed concrete members using fibre reinforced polymer composites Contains in-depth case histories
Proceedings of 6th International Conference on Civil Engineering and Architecture, Vol. 1
Proceedings of 6th International Conference on Civil Engineering and Architecture, Vol. 1 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Proceedings of 6th International Conference on Civil Engineering and Architecture, Vol. 1 write by Thomas Kang. This book was released on . Proceedings of 6th International Conference on Civil Engineering and Architecture, Vol. 1 available in PDF, EPUB and Kindle.
