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What is a half-cell potential test? Corrosion is a natural process that occurs when a structure is exposed to elements like CO2 or chloride, which can penetrate the concrete all the way to the steel reinforcement. This can have serious durability and safety consequences, which is why it is important to monitor corrosion using an accurate and trusted method. The half-cell potential test is the only corrosion monitoring technique standardized in ASTM C876 – 15: Standard Test Method for Corrosion Potentials of Uncoated Reinforcing Steel in Concrete. It is used to determine the probability of corrosion within the rebar in reinforced concrete structures. Read this blog to learn more details: https://hubs.ly/Q02lYDpQ0 #corrosion #concrete #tech

Half-cell corrosion mapping is a technique used to assess and visualize the corrosion susceptibility of metallic components. It involves the measurement of electrochemical potential at various points on the surface of the material in question. By obtaining these potential measurements, engineers can create heat maps that highlight areas of the material that are more prone to corrosion and identify potential trouble spots. 🔬 🗺 Interested to learn more about Half-cell corrosion mapping? Curious to see if this method could be of use to your structures? 🤔 Check out website below https://lnkd.in/e7sMYzK6 #corrosion #scienceandenvironment #astm #nondestructivetesting #concrete #rebar

Rebar corrosion is a recurrent problem in the construction industry. More specifically, it can: 📉 Affect the quality of a project by cracking and damaging the concrete 💸 Add costs of repairs Fortunately, there are new technologies that can help us deal with corrosion in a practical manner! 🌟 iCOR® is the most convenient corrosion rate measurement device in the field and offers an innovative research tool for laboratory studies. It gives engineers a comprehensive understanding of concrete quality and the level of corrosion—allowing them to make faster, more informed decisions when it comes to rehabilitation and repair. Get the details about iCOR in our blog 👇 https://hubs.ly/Q02hKd_30 #Corrosion #Concrete #Rebar #Sensor #CEPRA #Technology

I've been a big fan of Giatec | Smart Construction Solutions for years and used their thermocouples in a number of projects. I often get asked how to tell if a bridge is in good enough condition to apply a #UHPC overlay vs. full deck replacement. The answer has to do with corrosion particularly whether or not corrosion (and the associated salts, chlorides) have migrated to the lower rebar mat and started the corrosive chemical reaction. #civilengineering #bridgerehabilitation UHPC Solutions

Looking for non-destructive concrete testing methods? Then check out iCOR®! 👍 When large concrete structures with steel rebar begin to corrode, it can create serious hazards for the bridges, highways, and buildings we use every day. This type of corrosion can often go unnoticed for a long time. By the time you see corrosion of the rebar coming through a concrete structure, it may be too late to repair it. With iCOR, a wireless option for NDT corrosion detection in reinforced concrete structures, you can assess your concrete's corrosion without damaging the element! Assessing your concrete for signs of corrosion is important. Interested in learning more? Read here ⬇️ https://hubs.ly/Q02dzSgq0 #Corrosion #Repair #Concrete #NDT #NonDestructive

Horton sphere pressure vessels are supported above ground by multiple steel legs. To prevent catastrophic failure in the case of a fire, the legs are covered by a protective layer of fireproofing material. With time and water ingress, Corrosion Under Fireproofing (CUF) may develop under this protective layer. Hidden from sight, it compromises the structural integrity of the sphere supports. Historically, two strategies were privileged for inspection. The first requires stripping and re-application of the entire protective layer for visual and ultrasonic inspections on the bare steel. Alternatively, a visual inspection can be performed with the passive protection in place at the expense of lower confidence and the inability to detect internal corrosion. Conventional Pulsed Eddy Current (PEC) has also been used to evaluate the remaining wall thickness of supports. Recent developments in PEC by Eddyfi Technologies with the introduction of dynamic scanning and array (PECA) technology has challenged the status quo by enabling much greater productivity, coverage, detection, and confidence; the technology enables high confidence levels without the expense of unnecessarily stripping and reapplying concrete, reducing overall inspection and repair project costs by 70 to over 90 percent! Let’s take a closer look. https://lnkd.in/gZ79h6Sa #ndttesting #ndtinstruments #pautprobes #probes #customprobes #corrosion #ectane3 #lyftpro #lyftgo #tubepro6 #Sonyks #SwiftUT #perpetual #ndtsoftware

Concrete Compression Machines are versatile testing equipment, vital for any concrete testing laboratory. They come in a wide variety of configurations, and we know that selecting the right one is extremely important. To help you navigate the complexity of choosing the right testing equipment, we created a four-step guide. Click here to learn more ➡ https://lnkd.in/gPt6FA2A #civilengineering #constructionmaterial #concretecompressiontesting

Sharing with you glimpses of Flexural Testing Day of Reinforced Concrete Beam! Here’s a Quick Look at the important specs. ✨ Key Specifications: - Concrete Mix: Ready-mixed with normal Portland Cement , fine and coarse aggregates - Target Strength: 35 MPa, verified through compressive strength tests. - Test Cylinders Dimensions: 150 mm dia, 300 mm height - Beam Dimensions: Cross-section of 200mm x 350mm, 4m span length, 3.7 m clear span. - Reinforcement: 3-10M steel bars, designed using minimum reinforcement ratio as per CSA Standards. ✨Event Highlights - Setting up concrete mix and test cylinders - Assembling the reinforced steel cage and form work - Instrumentation installation - Crack detection and marking - Deflection and strain measurements using 2 LVDTs and 6 strain gauges respectively. It was a great experience from beginning to end. 👷♀️. #STEM #Civil_engineer_in_action #UofM #Master_diaries

Why is corrosion assessment important? 🤔 When large concrete structures with steel rebar begin to corrode it can create serious hazards for the bridges, highways, and buildings we use every day. This type of corrosion can often go unnoticed for a long time, which is one of the reasons regular testing is important. 🚧 By the time you see corrosion of the rebar coming through a concrete structure, it may be too late to repair. How can you detect corrosion before it becomes too damaged to fix it? With iCOR®, you can monitor corrosion without destroying your concrete! This is a non-destructive concrete testing device and is a unique, wireless option for NDT corrosion detection in reinforced concrete structures. 👍 Interested in learning more about iCOR? Read more here: https://hubs.ly/Q02ftq0t0 #Corrosion #NDT #Concrete #Assessment #ConstructionTech

Influence of the microstructure of TMT reinforcing bars on their corrosion behavior in concrete with chlorides Highlights • Corrosion studies of TMT bars in simulated pore solutions and in concrete slabs. • The outer martensite acts as anode and the core as cathode when both parts of the bar are coupled. • The core material does not meaningfully increases the corrosion rate of the outer martensite. • The usual depth of the pits is related to the microstructure of the TMT bars. • Once the pits reach the martensite-core interlayer, they tend to progress by mouth widening. There is a corrosion study carried out with TMT bars where weight losses after sea water and fresh water immersions were measured [5]. The results obtained in this research suggest that the corrosion resistance of TMT bars could be higher than that of conventional hot rolled reinforcing bars. Another corrosion study with TMT bars also reports weight losses in NaCl solutions [6]. Recent preliminary results on the effect of the galvanic coupling between TMT and conventional reinforcement steels on their corrosion performance The frequent use of TMT bars and the clear interest of corrosion performance evidence the need for obtaining more complete information about how the phases present in their microstructure can influence the development of the attack in the bars. In this work, the influence of the microstructure originated by the TMT on the corrosion behavior of reinforcing bars is analyzed in solution tests, using different electrochemical techniques. The relative corrosion resistance of the phases present in the bars, their interaction and the resulting impact on the corrosion mechanism are analyzed. There are several factors implied in the onset and development of the corrosion of steel in concrete that are impossible to replicate in solution tests Hence, bars are heavily corroded in concrete slabs for different times, and a morphological analysis of the shape of the main pits detected is carried out to verify the results obtained in solution about the influence of the microstructure in the development of the pits. For knowledge only