Results 131 to 140 of about 24,500 (257)

Flexural-strengthening efficiency of CFRP sheets in post-tensioned concrete T-beams with and without U-strip CFRP anchorage system

open access: yesTạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ, 2016
This paper deals with flexural-strengthening efficiency of CFRP sheets for post-tensioned concrete T-beams with and without external U-strip CFRP anchorage systems. An experimental program was carried out on total nine post-tensioned concrete
Phan Vũ Phương   +3 more
doaj  

Flexural behavior of RC beams externally reinforced with CFRP composites using various strategies

open access: yesOpen Engineering
The external composite material bonding is an effective and practical method for flexural strengthening of reinforced concrete (RC) beams, providing a large opportunity to develop high-performance and cost-effective structures.
Lafta Yousif Jabbar   +2 more
doaj   +1 more source

An experimental investigation of retro-reinforced clay brick arches

open access: yes, 2010
This paper describes the laboratory testing of eight 2.95m span segmental profile clay brick arches. Seven of the arches were strengthened with longitudinal intrados (soffit) reinforcement; the eighth was left unreinforced as an experimental control ...
Ashour, AF, Chen, Y, Garrity, SW
core  

Evaluations of the effectiveness of the near‐surface mounted steel materials in strengthening short RC wall‐like columns with openings

open access: yesStructural Concrete, EarlyView.
Abstract In practice, reinforced concrete (RC) wall‐like columns often have openings to facilitate building services, which creates stress concentrations around the opening, resulting in the weakening of their load‐carrying capacity. This study proposes innovative strengthening methods using near‐surface mounted (NSM) incorporating steel materials to ...
Ahmed Hamoda   +4 more
wiley   +1 more source

Performance enhancement of reinforced concrete columns using stainless steel and galvanized steel plates: Experimental and numerical investigation

open access: yesStructural Concrete, EarlyView.
Abstract This study introduces an innovative approach to strengthening defected reinforced concrete (RC) columns using externally bonded stainless steel and galvanized steel plates. Unlike conventional strengthening methods, this technique replaces traditional transverse stirrups with steel sheets, providing enhanced confinement and ductility.
Ahmed Hamoda   +5 more
wiley   +1 more source

Structural Behaviour Of Distressed And Strengthened Post-Tensioned Box Girder Beams [PDF]

open access: yes, 2007
Box girder prestressed concrete beams are used widely in bridge construction due to its efficient structural response under flexural as well as torsional loading. Prestressing can be either internally or externally applied to a beam.
Bukola Ohu, Rachael
core  

Evaluation of strengthening techniques of traditional masonry buildings: case study of a four-building aggregate [PDF]

open access: yes
Increasing appraisal of the durability, conservation state, and changeable use and function of old buildings in urban centers relies a great deal on the structural safety evaluation of vertical load capacity and the ability to resist horizontal forces ...
Mendes da Silva, J. A. R.   +3 more
core   +2 more sources

Dose‐Dependent Effects of Simulated Clinical Radiotherapy on the Structure and Properties of Root Dentine

open access: yesAustralian Endodontic Journal, EarlyView.
ABSTRACT Head and neck radiotherapy (HNRT) can expose teeth to moderate radiation doses, yet the effects on root dentine under clinically relevant conditions remain unclear. This in vitro study compared dentine subjected to 0, 30, or 50 Gy IMRT. Palatal roots from 35 maxillary molars were allocated to non‐irradiated, 30 Gy (oropharyngeal simulation ...
Anna Victória Costa Serique   +11 more
wiley   +1 more source

Seismic performance of shear-critical RC columns strengthened by multiple composites considering shifted failure zone

open access: yesCase Studies in Construction Materials
Strengthening reinforced concrete (RC) columns utilizing advanced composites, including fiber-reinforced polymer (FRP), polyethylene terephthalate (PET) FRP, and engineered cementitious composite (ECC) has attracted extensive efforts for decades ...
Biao Hu   +4 more
doaj   +1 more source

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