... Probabilistic Modeling of the Relationship between Concrete Crack Width and Corrosion- Induced Mass Loss of Steel Bar Fujian Tang, Chao Li, Hong-Nan Li State Key Laboratory of Coastal and Offshore Engineering, School of Civil Engineering Dalian University of Technology, No.2 Linggong Road, Dalian...

.... Concrete block specimens containing steel bars are prepared and subjected to accelerated corrosion test. As the corrosion-induced mass loss of steel bars reaches different levels ranging from 0% to 30%, the tests are terminated. The steel bars are taken out of the concrete block, cleaned with a sand...

... mass losses of steel bars corroded in concrete specimens. As a result, it was clear that the corrosion rates measured by CIPE agreed with the results of the mass losses. Furthermore, corrosion rates of steel bars were measured at a pier beam. The applicability of CIPE was confirmed on the site. From...

... ABSTRACT Corrosion of steel reinforcement is one of the main causes of premature deterioration in reinforced concrete (RC) structures. It causes concrete cover cracking, degrades the steel/concrete bond strength, reduces the cross section of steel bars, and consequently reduces the carrying...

.... Therefore, it is widely used for physical, chemical and biochemical sensing. In this study, a corrosion sensing assembly to monitor steel bar corrosion in concrete slab based on the LPFG sensing principle is proposed and its performance is experimentally investigated. The assembly was made by encasing...

... Abstract In this study, the corrosion process of steel bars embedded in mortar cylinder and immersed in 3.5 wt.% NaCl solution was monitored with long period fiber gratings (LPFG) sensors. Each LPFG was first deposited with a thin layer of silver (600 nm or 1000 nm thick...

... Abstract This study investigates the corrosion resistance and bond strength of mortar cylinders reinforced with uncoated steel bars (UN) and steel bars coated with two types of enamel: pure enamel (PE) and calcium silicate modified enamel (ME). The addition of calcium silicate is aimed...

... spectroscopy ( EIS ). materials and corrosion Upstream Oil & Gas Government work permission flowline corrosion riser corrosion cathodic protection passivity indicator Subsurface Corrosion steel bar steel Pipeline Corrosion reduction electrode protection steel rebar well integrity ECE...

... ( FBE )-coated steel bars were investigated in 3.5 wt.% NaCl solution up to 244 days using electrochemical impedance spectroscopy ( EIS ). The microstructure of a mortar-coating-steel system was examined using scanning electron microscopy ( SEM ), and the effects of water cement ratio and exposure...

... ABSTRACT In reinforced concrete structures exposed to marine environments, corrosion initiates when the chloride ion concentration at the surface of the embedded steel bar exceeds a chloride corrosion threshold (C T ) value. C T is generally assumed to have a conservatively fixed value...

... for chloride penetration profiles, half-cell steel potential mapping and corrosion rate measurements etc. The seawater supply pipes exhibited no signs of concrete distress. Chloride levels were less than the threshold limit. Exposed steel bars and the steel cylinder showed no signs of corrosion...

... the mechanisms involved therein. Therefore, chloride contaminated reinforced concrete slabs were cast and laboratory controlled experiments were conducted for half-cell potential, corrosion current, concrete resistivity, SEM and MIP measurement. The experimental measurements at the intersection of steel bars...

... flowline corrosion Subsurface Corrosion steel bar Artificial Intelligence frequency Pipeline Corrosion riser corrosion line scan materials and corrosion well integrity sensor response oscillator diameter voltage value signal profile experiment orthogonal line scan sensor...

... metals & mining riser corrosion corrosion rate coating flowline corrosion Subsurface Corrosion adhesion carbon steel Pipeline Corrosion well integrity steel stainless steel 3cr12 carbon steel bar epoxy-coated bar corrosion test program corrosion resistance weight loss...

... % by volume of concrete. materials and corrosion well integrity reinforcement construction materials Upstream Oil & Gas resistance flowline corrosion Subsurface Corrosion steel bar corrosion rate specimen corrosion current density polarization resistance anodically Tafel plot...

... to investigate the response of steel, embedded inside cracked concrete and with an established macrocell, to external polarization. The results of linear polarization, performed on cracked concrete specimens containing a segmental steel bar with external electrical connections, are presented. A simple circuit...

... be 2 to 4 times greater than the volume of the non-corroded steel. The increase in the volume of steel induces tensile strains in the concrete around the reinforcing steel bar and will ultimately cause concrete cracking. Cracked concrete allows oxygen, chlorides, carbon dioxide and water to enter...

... flowline corrosion Subsurface Corrosion steel bar corrosion rate Pipeline Corrosion riser corrosion HESC specimen construction materials Upstream Oil & Gas concrete specimen current density BFSC cement type international development engineering tokyo institute concrete...

... Galvanization of reinforcing steel bars is one of the techniques used to inhibit corrosion of reinforcing steel used in concrete. Hot-dip galvanized reinforcing steel bars were used in concrete bridge decks subjected to deicer salts to inhibit chloride-induced corrosion and increase the service life of concrete...

... complete explanation of what occurs in this zone, to identify trends in steel potential, and to relate changes in potential to electrochemical processes involved. In a previous research program, tests similar to those described were made with both smooth steel bars and deformed bars (rebars) and various...