Results 51 to 60 of about 380 (177)

Rotation capacity of continuous reinforced concrete slab strips revisited

open access: yesStructural Concrete, EarlyView.
Abstract Rotation capacity is a key characteristic of statically indeterminate reinforced concrete structures, as it (i) enables bending moment redistributions, whether intentionally introduced through optimized reinforcement layouts or arising from unforeseen self‐equilibrated stress states, and (ii) promotes large rotations at failure load, thereby ...
Nathalie Reckinger   +2 more
wiley   +1 more source

Hormigón liviano de alto desempeño - una comparación entre pérdidas de pretensado reales y estimadas por los códigos de diseño High performance lightweight concrete - a comparison between actual prestress losses and design code estimates

open access: yesRevista Ingeniería de Construcción, 2007
Dos mezclas de hormigón liviano de alto desempeño (HLAD) con resistencias a compresión de 55 MPa y 69 MPa fueron desarrolladas. El peso unitario de los hormigones fue 1855 y 1890 kg/m, respectivamente.
Mauricio López, Lawrence F Kahn
doaj  

Rational Estimation of Initial State of Post-tensioned Concrete Beams Using Field Measurement Data

open access: yesInternational Journal of Concrete Structures and Materials
Accurate estimation of initial prestress is essential for ensuring the structural integrity, durability, and quality management of prestressed concrete (PSC) girders. However, conventional estimation methods that rely on design provisions or experimental
Hyun Woo Park   +3 more
doaj   +1 more source

The challenges of GFRP RC beam design for limit states

open access: yesStructural Concrete, EarlyView.
Abstract Glass fiber reinforced polymer (GFRP) bars are used ever more frequently in concrete construction due to their non‐corrosive and anti‐magnetic properties. Their research over the past decades focused on fundamental questions, such as the design aspects of beams under flexural loads.
Szabolcs Szinvai, Tamás Kovács
wiley   +1 more source

Monitoring–Modeling Integrated Assessment of Temperature-Induced Prestress Variations in Prestressed Concrete Beams During Construction

open access: yesBuildings
Prestressed concrete (PSC) beams are widely used in bridges and large structures due to their high load-bearing capacity and crack resistance. However, owing to their complex construction process, they are highly sensitive to temperature variations ...
Chengjun Li   +4 more
doaj   +1 more source

Probabilistic estimation of reliable sensor spacing for wire break detection in prestressed concrete using acoustic emission technique

open access: yesStructural Concrete, EarlyView.
Abstract The acoustic emission (AE) technique has proven to be an effective method for detecting individual wire breaks in prestressed concrete structures affected by stress corrosion cracking (SCC). However, despite its widespread application, the quantitative assessment of AE monitoring reliability and optimal sensor placement remains unresolved ...
Max Fiedler, Steffen Marx
wiley   +1 more source

Identification of invisible damage in prestressed concrete bridges—A demonstrator case using coda wave interferometry

open access: yesStructural Concrete, EarlyView.
Abstract During their life cycle, prestressed concrete bridges are prone to wire breaks of their tendons due to fatigue or stress corrosion cracking. However, not all structures show visible cracking on the surface, which would provide timely warning of otherwise invisible damage. Brittle failure may occur.
Noah Sträter   +3 more
wiley   +1 more source

Evaluation of prestress losses in an innovative prestressed precast pavement system [PDF]

open access: yes, 2018
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.
openaire   +2 more sources

Durability performance of a high‐performance fiber‐reinforced concrete for bridge applications

open access: yesStructural Concrete, EarlyView.
Abstract This paper investigates the durability performance of a coarse‐aggregate high‐performance fiber‐reinforced concrete (HPFRC) developed as a cost‐efficient material solution for precast bridge applications. A comprehensive experimental program was conducted to assess the resistance of the material to the principal deterioration mechanisms ...
Rolando Baldiviezo   +6 more
wiley   +1 more source

Determination of unit characteristics of concrete linear creep/Betono tiesinio valkšnumo vienetinių rodiklių nustatymas

open access: yesJournal of Civil Engineering and Management, 2000
It is very important to take into account time-dependent non-elastic deformations and variation of concrete mechanical characteristics in analysis of concrete structures.
Robertas Balevičius   +1 more
doaj   +1 more source

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