Results 81 to 90 of about 29,843 (316)

Performance of Strip Seals in Iowa Bridges, Project TR-437, January 2001

open access: yes, 2001
A pilot study was conducted on the premature failures of neoprene strip seals in expansion joints in Iowa bridges. In a relatively large number of bridges, strip seals have pulled out of the steel extrusions or otherwise failed well before the expected ...

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Finite element modelling of shear connection for steel-concrete composite girders [PDF]

open access: yes, 2002
The main objective of this thesis is to develop effective 3-dimensional finite element models to trace the behaviour of headed stud shear connectors in composite girders with solid slabs and precast hollow core slabs.
El-lobody, Ehab Abd El-fattah Mohamed
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Nanoscale Secondary Ion Mass Spectrometry for Quantifying Membrane Fouling: Fouling Layer Structure and Chemical Interaction

open access: yesAdvanced Science, EarlyView.
Nanoscale secondary ion mass spectrometry (Nano SIMS) is established as a powerful analytical tool to visualize and quantify the membrane fouling layers. ABSTRACT Membrane technology has garnered considerable attention for applications in wastewater treatment and resource recovery. Nevertheless, membrane fouling remains a major barrier, yet the lack of
Mengfei Wu   +4 more
wiley   +1 more source

Structural optimization of concrete arch bridges using Genetic Algorithms

open access: yesAin Shams Engineering Journal, 2019
Concrete bridges are used for both highways and railways roads. They are characterized by their durability, rigidity, economy and beauty. Concrete bridges have many types such as simply supported girder bridges, arch bridges and rigid frame bridges ...
Mostafa Z. Abd Elrehim   +2 more
doaj   +1 more source

The behaviour of reinforced concrete beams under cyclic temperature profiles [PDF]

open access: yes, 1986
On a hot summer day, high levels of solar radiation are incident on concrete bridge decks, causing non-linear variations in temperature through the depths of the structures. The changes in temperature lead to axial expansion and curvature of decks.
Richardson, M, Richardson, Michael
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Thermoelectric Gating Organic Electrochemical Transistors Enabled by Printable Ionogels With n‐p Convertible Thermopower

open access: yesAdvanced Science, EarlyView.
A type of thermoelectric ionogels with convertible n‐p thermopowers are demonstrated with Seebeck coefficients ranging from ‐3.61 to +9.74 mV K−1. Thus, thermoelectric gating organic electrochemical transistor is achieved by employing ionogel as thermoelectric modules and ionic dielectrics simultaneously, paving the road to self‐powered, highly ...
Xingyu Hu   +8 more
wiley   +1 more source

Carbonation of concrete bridge structures in three South African localities

open access: yes, 2004
Includes bibliographical references (leaves 220-227).The rate of carbonation for the localities of the Cape Peninsula, Durban (i.e. Durban - KwaZulu Natal South Coast) and Johannesburg (i.e.
Yam, Wood Kuen
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