Corrosion of Strained Plain Rebar in Chloride-Contaminated Mortar and Novel Approach to Estimate the Corrosion Amount from Rust Characterization | Journal of Materials in Civil Engineering

Abstract Some of the steel bars used in reinforced concrete construction experience plastic strain due to various operations at construction sites. The present work concentrates on the corrosion behavior of such prestrained reinforced bars (rebars) embedded in chloride-contaminated cement mortar and exposed to laboratory conditions (temperature of 27°C±2°C and relative humidity of 60%) for 18 months….

Nanowire recycling targets e-waste

Based around the full lifecycle of electronics and reducing the amount of e-waste we produce, the technique relies on polymers that can be broken down by solvents without damaging the integrated nanowires. Once a device has been used, the polymer matrix containing the silver nanowires is dissolved, leaving behind just the nanowire network. The nanowires…

Effect of Water–Rock Interaction on the Axial Capacity of Drilled Caissons Socketed in Claystone Bedrock | Journal of Geotechnical and Geoenvironmental Engineering

Abstract A large number of bridges and structures in Colorado are supported by drilled caissons and shafts socketed in weak clay-bearing rocks (e.g., Denver blue claystone and Pierre shale). During the construction of caissons using the wet drilling technique, drilling fluid gets in direct contact with the bedrock, potentially causing their slaking and degradation and, thus,…

Moisture Damage Resistance of Short-Term Aged Pyro-Oil–Modified Bitumen Using Rolling Thin Film Oven by Surface Free Energy Approach | Journal of Materials in Civil Engineering

Abstract Moisture damage occurs due to loss of cohesion and/or adhesion, which results in loss of stiffness and strength. Currently, the surface free energy (SFE) approach is used to calculate mixture performance in terms of various SFE parameters to assess moisture susceptibility of various newly developed binders. In the present study, the concept of SFE…

Unbalanced Moment Transfer in GFRP-RC Slab–Column Connections | Journal of Composites for Construction

Abstract When reinforced concrete (RC) slabs are supported directly on columns, a combination of shear forces and unbalanced bending moments is transferred between the slab and the columns at slab–column connections. The unbalanced moment transferred between a slab and a column can be significantly increased by the application of horizontal loads, such as wind and…

Stress–Strain Behavior of FRP-Confined Recycled Aggregate Concrete in Square Columns of Different Sizes | Journal of Composites for Construction

Abstract The application of recycled aggregate concrete (RAC) has so far mainly been limited to nonstructural components because of its inferior short- and long-term performance compared with normal concrete. Encasement of RAC with a fiber-reinforced polymer (FRP) tube has been demonstrated to be an effective technique to improve both the mechanical properties and durability of…