Results 51 to 60 of about 81,732 (286)

NUMERICAL INVESTIGATION OF RC TUNNEL SEGMENTS SUBJECTED TO ELEVATED TEMPERATURE VIA FEM

open access: yesEskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi, 2022
There has been increasing concern about the fire-resistant design of reinforced concrete tunnel lines among structural engineers due to the fire incidents that occurred recently.
Uğurhan Akyüz, Tolga Yılmaz
doaj   +1 more source

AFRP retrofit of reinforced concrete columns against impact loading [PDF]

open access: yes, 2015
Structures can be exposed to impact loads as a result of an explosion, falling objects, projectiles and vehicle collisions. Within the increasing threat of these impact sources, it is very important to protect the columns that are the vital members of ...
Gurbuz, Tuba   +3 more
core   +1 more source

Damage Characterization of Beam-Column Joints Reinforced with GFRP Under Reversed Cyclic Loading

open access: yes, 2009
The use of fiber reinforced polymer (FRP) reinforcement in concrete structures has been on the rise due to its advantages over conventional steel reinforcement such as corrosion.
Said, Aly M.
core   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

open access: yesAdvanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui   +5 more
wiley   +1 more source

Study on Flexural Performance of Reinforced Concrete Beams Strengthened with FRP Grid–PCM Composite Reinforcement

open access: yesApplied Sciences
To study the flexural performance of fiber-reinforced polymer (FRP) grid–polymer cement mortar (PCM)-composite-strengthened RC beams, the finite element numerical simulation of FRP grid–PCM composite RC beams is carried out using ABAQUS to analyze the ...
Zhimei Zhang, Haixue Qin
doaj   +1 more source

Scalable Electrochemical Concrete Fabrication and Closed‐Loop Recycling

open access: yesAdvanced Science, EarlyView.
The electrochemical‐driven recycling strategy establishes a reversible concrete material flow by extracting Ca, Si, Al, and Fe from concrete waste and regenerating functional feedstocks. These reversed products are reassembled into new concrete, which re‐enters service and ultimately returns to waste, enabling a closed‐loop, waste‐origin, and low ...
Hanxiong Lyu   +7 more
wiley   +1 more source

Analysis of bond behaviour in strengthened reinforced concrete beam with carbon fiber reinforced polymer lamella

open access: yesMATEC Web of Conferences, 2017
Carbon fiber reinforced polymer (CFRP) can be used to strengthen the reinforced concrete (RC) beams. The debonding is the main failure model and strengthening is limited.
Žmindák Milan   +2 more
doaj   +1 more source

Experimental and Numerical Assessment of Reinforced Concrete Beams with Disturbed Depth

open access: yesInternational Journal of Concrete Structures and Materials, 2019
This paper investigates numerically and experimentally the performance of reinforced concrete (RC) beam with unequal depths subjected to combined bending and shear.
A. Hamoda, A. Basha, S. Fayed, K. Sennah
doaj   +1 more source

Recent Progress and Opportunities in Oxide Semiconductor Devices for In‐Memory and Neuromorphic Computing

open access: yesAdvanced Electronic Materials, EarlyView.
This review surveys oxide‐semiconductor devices for in‐memory and neuromorphic computing, highlighting recent progress and remaining challenges in charge‐trap, ferroelectric, and two‐transistor devices. Oxide semiconductors, featuring ultra‐low leakage, low‐temperature processing, and back‐end‐of‐line compatibility, are explored for analog in‐memory ...
Suwon Seong   +4 more
wiley   +1 more source

Equivalent stress block for normal-strength concrete incorporating strain gradient effect [PDF]

open access: yes, 2012
To account for the different behaviours of concrete under uniaxial compression and bending in the flexural strength design of reinforced concrete (RC) members, the stress-strain curve of concrete is normally scaled down so that the adopted maximum ...
Ho, Johnny Ching Ming   +3 more
core   +4 more sources

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