Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Research in Progress (RIP) https://rip.trb.org/Images/PageHeader-wTitle-RIP.jpg https://rip.trb.org/ Hyperspectral Imaging for Corrosion Detection in Bridge Structures https://rip.trb.org/View/2696155 Mon, 27 Apr 2026 19:49:29 GMT https://rip.trb.org/View/2696155 Corrosion Resistance of Using Very High Strength Steel Reinforcing Bars in Reinforced Concrete Beams– An Experimental and Analytical Approach https://rip.trb.org/View/2694443 Thu, 23 Apr 2026 18:10:34 GMT https://rip.trb.org/View/2694443 Feasibility of Engineered Cementitious Composites (ECC) as Joint Material for Accelerated Bridge Construction (ABC) https://rip.trb.org/View/2694442 Tue, 21 Apr 2026 13:16:30 GMT https://rip.trb.org/View/2694442 Mixed metal oxide-coated titanium alloy reinforcement for ultra-durable coastal transportation infrastructure -> bridging toward infinity (OSU) https://rip.trb.org/View/2663234 Sat, 31 Jan 2026 12:19:03 GMT https://rip.trb.org/View/2663234 Assessing Residual Strength of Post-Tensioned Elements with Corrosion-Induced Tendon Failure https://rip.trb.org/View/2652073 Fri, 09 Jan 2026 16:32:17 GMT https://rip.trb.org/View/2652073 Investigation of Dual Grade/Hybrid Steel Plate Girders Utilizing Stainless Steel https://rip.trb.org/View/2646068 Mon, 29 Dec 2025 11:32:26 GMT https://rip.trb.org/View/2646068 Assessing The Capacity of Four Steel Hinges Extracted from Existing Bridges https://rip.trb.org/View/2607888 Wed, 08 Oct 2025 09:44:28 GMT https://rip.trb.org/View/2607888 2503 Enhancing MALP and MKP as Repair Materials Through Joint Usage and in combination with Ceramic Paint https://rip.trb.org/View/2606541 Fri, 03 Oct 2025 12:05:58 GMT https://rip.trb.org/View/2606541 Evaluating New Steel Coating Systems https://rip.trb.org/View/2593943 Thu, 28 Aug 2025 11:32:36 GMT https://rip.trb.org/View/2593943 Correlation Between Deck Patching Quantities and Chloride Concentration Levels https://rip.trb.org/View/2577125 Fri, 18 Jul 2025 12:02:54 GMT https://rip.trb.org/View/2577125 Effect of Long-Term Inactivity on Railcar Bearing Lubricant and Seal Function https://rip.trb.org/View/2574620 Mon, 14 Jul 2025 18:59:30 GMT https://rip.trb.org/View/2574620 Modeling and Assessment of the Remaining Service Life for Steel Bridge Piles in Michigan https://rip.trb.org/View/2562264 100 ppm) and sulfates (>200 ppm) have been identified as indicatives of corrosive soil in Federal Highway Administration guidelines for mechanically stabilized earth walls. Chloride ions, which directly participate in the anodic reaction of corrosions, could be a major threat for bridges in Michigan due to the large amount of de-icing agent applied in snow season. (c) Moisture content. Moisture is necessary for corrosion. Therefore, highest level of corrosion is usually found in water table fluctuation zone. (d) Bacteria. Microbiologically Influenced Corrosion (MIC), an electrochemical corrosion affected by the presence of biological agents, can also severely degrade the steel surfaces. (e) Pile type and loading history. The material, dimension and loading history of the steel piles can have impact on their corrosion rate. (3) There is no widely accepted method to predict pile corrosion. Current single variable or multivariable regression models do not consider all factors listed above, and thus lack generalizability. More importantly, the corrosion environment in Michigan may require its unique regression model. With these unsolved issues, the threat of influencing factors cannot be ranked. (4) There is lack of accurate prediction of the remaining load-bearing capacity of corroded steel piles. While several methods (AISC, AISI-EWM, AISI-DSM, etc.) have been developed, the localized corrosion as well as stiffness change make their assumption invalid and cause conservative prediction of the remaining life. (5) Many retrofit or repair techniques have been implemented for strengthening the corroded steel piles, but a detailed cost-effectiveness analysis (CEA) for those techniques should be conducted to minimize future construction cost in Michigan. Based on the above discussion, it is essential to investigate the effect of various factors on corrosion rate of steel bridge piles and predict the remaining load-bearing capacity of corroded piles. Consequently, proper repair technique can be applied at appropriate time to maintain and prolong the service life of bridges in Michigan.]]> Fri, 06 Jun 2025 14:44:09 GMT https://rip.trb.org/View/2562264 Replacement of Outside Beams on Adjacent Box-Beam Structures https://rip.trb.org/View/2562257 Fri, 06 Jun 2025 14:24:21 GMT https://rip.trb.org/View/2562257 Probabilistic Methods for Service Life Design of Steel Bridge Elements https://rip.trb.org/View/2558382 Wed, 28 May 2025 14:10:26 GMT https://rip.trb.org/View/2558382 Effects of Composition and Temperature Control Measures on Mass Concrete Durability https://rip.trb.org/View/2555881 Tue, 20 May 2025 07:17:50 GMT https://rip.trb.org/View/2555881