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Moisture-Insensitive Procedure for Determining the Air Void Distribution in Concrete
Publisher: American Society of Civil Engineers
Abstract: An infrared thermography (IRT) based procedure, that relies on detecting temperature differences due to air voids, is developed to detect improperly compacted concrete. Unlike previous attempts to detect isolated delaminations, ...
Mesoscale Model for FRP-Confined Concrete
Publisher: ASCE
Abstract: The paper attempts to understand the macroresponse of fiber-reinforced polymer (FRP) confined concrete in terms of mesolevel interactions. Cylindrical specimens are modeled using a three-dimensional (3D) discrete-element ...
A Cost-Effective Slag-Based Mix Activated with Soda Ash and Hydrated Lime: A Pilot Study
Publisher: ASCE
Abstract: The present study explores a cost-effective method for using activated ground granulated blast furnace slag (GGBFS) and silica fume (SF) as cement substitutes. Instead of activating them with expensive alkali solutions, ...
Multisurface Plasticity for Concrete Subjected to Fire: A Spectral Decomposition–Based Approach
Publisher: American Society of Civil Engineers
Abstract: The paper proposes a spectral decomposition–based approach for implementing a multisurface coupled damage–plasticity model for concrete subjected to fire. The multisurface approach enables distinct flow rules to be used ...
Investigation into the Effect of Bonding on FRP-Wrapped Cylindrical Concrete Columns
Publisher: American Society of Civil Engineers
Abstract: In this paper the failure of a three layer system comprising a concrete column, an intermediate epoxy layer, and fiber-reinforced polymer (FRP) confinement is investigated. We perform a series of numerical experiments to ...
Retrofitting a Column with an Internal Hinge: Analytical and Numerical Study
Publisher: American Society of Civil Engineers
Abstract: This paper examines the buckling of a column with an internal hinge that is retrofitted with a rotational spring to restore some capacity to carry bending moment at the internal hinge location. The problem is solved ...
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