...Andrés A. Torres-Acosta In recent years, the use of electrical resistivity (ρ) of concrete as a design parameter has intensified, ranging from its use as a durability index in laboratories for the characterization of cement-based materials, as well as in inspection of existing structures...

.... As a result, concrete sewer maintenance and analysis of their damaging elements are critical. In this regard, modeling microbiologically influenced corrosion (MIC) is a challenging phenomenon. Due to the complicated aspects related to the interaction of microorganisms and concrete degradation, this research...

...Deepak K. Kamde; Radhakrishna G. Pillai The NACE impact report (2016) states that nearly 50% of reinforced concrete (RC) structures experience major repair in about 10 y. The existing approach of patch repair does not address the root cause and may not be durable—resulting in re-repair and huge...

...Robert E. Melchers; Peter J. Richardson This paper presents observations of carbonation and alkali loss for well-compacted reinforced concrete columns from the exterior and interior of a 60-y-old in-land building. Calcium carbonate formation was detected only in the outermost 10 mm to 15 mm...

... adequately considered in past investigations on EAC mechanisms of prestressing strands. This study utilizes various characterization techniques to evaluate the surface/bulk deterioration of corroded pretensioned concrete (PTC) specimens after natural chloride exposure (by diffusion through cover concrete...

...Deepak K. Kamde; Sylvia Kessler; Radhakrishna G. Pillai Corrosion assessment of reinforced concrete (RC) structures with fusion-bonded-epoxy (FBE)-coated steel rebars is a challenge because the common inspection methods and data cannot be applied or interpreted in the same way...

... concrete corrosion resistance polymer rebar steel C orrosion of steel rebar inbedded in concrete is a significant safety concern in industries where high chloride-containing environments are present, such as potash mills or the various industries operating in a maritime environment. ^{1 - 4}...

...Chenxi Liu; Narasi Sridhar Localized corrosion is a precursor to the deterioration of carbon steel reinforcing bars in concrete. The localized corrosion of carbon steel in simulated concrete pore solutions was investigated by cyclic potentiodynamic polarization (CPP) technique. A four-factor, two...

...F. Montes; A. Frontini; M. Vázquez; M.B. Valcarce Silicate ions were tested as corrosion inhibitors for construction steel using concrete pore simulating solutions contaminated with chloride ions. The results were compared to those from solutions with no silicate and with no silicate...

...Deepak K. Kamde; Radhakrishna G. Pillai Currently, highway/railway bridges are designed for the service life of more than 100 y. In such reinforced concrete structures, fusion-bonded epoxy (FBE) coated steel rebars are being used in anticipation of delayed initiation of reinforcement corrosion...

...I.G. Ogunsanya; C.M. Hansson One strategy to address the 75-year service life requirement of a number of highway bridge design codes is the use of more corrosion-resistant reinforcement. Over the last few decades, many stainless steel grades have become available for reinforcing concrete...

.... This paper focuses on CP of iron-based alloys embedded in porous media, such as soil or concrete, as these two major applications of CP technology share many similarities. First, the scientific understanding of CP is reviewed and different competing theories are discussed. There is wide agreement...

...Yan-qi Wang; Gang Kong; Chun-shan Che The corrosion behavior of Zn-0.2%Al, Zn-0.5%Mg, and Zn-0.5%Mg-0.2%Al coatings in simulated concrete pore solution was studied by energy dispersive spectrometry (EDS), scanning electron microscopy, x-ray photoelectron spectroscopy (XPS), and potentiodynamic...

...I.G. Ogunsanya; C.M. Hansson A study has been conducted of the chloride-induced corrosion behavior of four different batches of galvanized steel reinforcement embedded in sound and in cracked concrete. One batch of bars was of conventionally produced hot-dipped galvanized (HDG) steel, two were...

...J. Karuppanasamy; R.G. Pillai Many concrete structures are built using plain mild (PM) and cold-twisted deformed (CTD) steel rebars. Also, quenched and self-tempered (QST) and prestressing (PS) steels are extensively used in today’s construction. For estimating the corrosion propagation period...

...Yenny Cubides; Shei Sia Su; Homero Castaneda The influence of zinc content on the mechanisms of corrosion protection of zinc-rich epoxy primers containing carbon nanotubes (CNT-ZRPs) on carbon steel under exposure to simulated concrete pore solutions was investigated. The barrier and cathodic...

...M. Dugarte; A.A. Sagüés Temperature changes affect current delivery and electrochemical assessment of galvanic anode–steel in concrete systems. Interfacial corrosion processes are thermally activated and, hence, temperature dependent. In addition, concrete resistivity varies with temperature...

...-term testing of the same range of stainless steel grades. To this end, the admixed chloride content and applied potential were varied and the bars were embedded in the same concrete mixture (based on an ordinary Portland cement [OPC]/slag blend with 0.40 water/cementitious materials [w/cm] ratio...

...Guillermo Puerta Falla; Habib Tabatabai This paper summarizes a study of the influence of confinement pressures on the corrosion of reinforcing steel embedded in concrete. Twelve cylindrical concrete test specimens were wrapped with varying layers of carbon fiber-reinforced polymer (CFRP...

...H. Burak Gunay; O. Burkan Isgor; Pouria Ghods Kinetics of passivity and chloride-induced depassivation of iron exposed to simulated concrete pore solutions were studied using electrochemical quartz crystal nanobalance (EQCN), electrochemical impedance spectroscopy (EIS), and open circuit potential...