Results 151 to 160 of about 149,067 (320)

Thermal prestressing of subsequently slotted reinforcement—Experimental and numerical development and optimization of an induction method

open access: yesStructural Concrete, EarlyView.
Abstract Many infrastructure buildings show deficits in their load‐bearing capacity and need to be strengthened in the short or medium term. However, the available methods are usually not effective for the self‐weight without temporary raising or prestressing the structure.
Yannik Schwarz   +4 more
wiley   +1 more source

Innovative design and sensing performance of a novel large-strain sensor for prestressed FRP plates

open access: yesDevelopments in the Built Environment
Owing to the low measuring range of traditional fiber Bragg grating (FBG) sensors and the complexity, imprecision, and lack of practicality in existing large-strain sensors, this paper introduces a novel type of large-strain sensor based on pre ...
Changyuan Liu   +6 more
doaj  

The influence of casting position and depth of concrete pour on bond strength

open access: yesStructural Concrete, EarlyView.
Abstract Bond strength of steel bars cast near the top of a concrete pour may be lower than that of bars cast close to the bottom due to an increase in water content, to consolidation of fluid concrete below the bar, or to both. Current design codes typically require increases of 20%–40% in anchorage and lap lengths in “poor” bond conditions to allow ...
Benny Suryanto   +3 more
wiley   +1 more source

Performance analysis of strengthening reinforced concrete beams under pure torsion using galvanized steel sheets: Experimental and numerical investigation

open access: yesStructural Concrete, EarlyView.
Abstract Reinforced concrete (RC) beams can be subjected to torsion, and failure due to torsion is brittle and poses a significant risk to occupants. Moreover, strengthening of existing RC beams in torsion may be required due to the upgrade of the structures or as part of structural rehabilitation.
Ahmed Hamoda   +4 more
wiley   +1 more source

Machine learning approach for the flexural strength of 3D‐printed fiber‐reinforced concrete based on the meta‐heuristic algorithm

open access: yesStructural Concrete, EarlyView.
Abstract The increasing demand for concrete in construction presents challenges such as pollution, high energy consumption, and complex structural requirements. Three‐dimensional printing (3DP) offers a promising solution by eliminating formwork, reducing waste, and enabling intricate geometries.
Nima Khodadadi   +5 more
wiley   +1 more source

Resolving taxa in a challenging orchid species complex using evidence from phylogenetics, morphometrics and floral scent chemistry

open access: yesTAXON, EarlyView.
Abstract Species can be difficult to circumscribe using morphology alone, and additional data can thus be useful for resolving challenging species complexes. Here we provide a case study of a South African orchid species complex which we resolved by analysing morphology, floral scent chemistry and molecular data.
Steven D. Johnson, Benny Bytebier
wiley   +1 more source

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