Arlington Memorial Bridge is a reinforced concrete spandrel arch bridge that connects Washington, DC and Virginia across the Potomac River. After over 85 years in service, the bridge started exhibiting signs of deterioration, including reinforcement corrosion. As part of a major rehabilitation effort to extend the bridge’s service life, targeted cathodic protection (CP) systems were installed in the arch cross-walls, floors, and under arches to mitigate and prevent corrosion. The implemented CP system consisted of galvanic and two-stage anodes to mitigate corrosion. Galvanic anodes were installed in the repair areas to prevent the ring anode affect and ensure a durable concrete repair. The two-stage anodes were installed in areas of concrete which were actively corroding without signs of concrete deterioration.
This bundle is for Hard Copies only.
This bundle includes the 110.1 (2016) and 110.3 (2021) Guide Specifications. The documents cover Guide Specifications for Structural Concrete Repair and Guide Specifications for Cementitious Bonded Overlay, respectively.
What happens when a building owner calls with leaks into a building they just finished? After verifying whether they want to file a lawsuit or not, the course of action is important. An investigation and preliminary testing are typically recommended to understand the original design and the quality and consistency of the construction. Design of remedial repairs and a pilot repair program followed by retesting to confirm results. How extensive are the failures and how invasive do the repairs need to be? Costs? What materials were used and were they compatible? Public perception and developer/owner reputation are important. The occupants have just moved in. Higher expectation of successful repairs. Can we involve the original design and construction team? These are just a few of the issues that need to be faced early in this process. One must communicate often and clearly with the owner and rest of the project team in order to manage expectations, costs and construction quality control.
This demonstration will highlight the successful renovation of a concrete floor at the Flatstick Pub in downtown Spokane, Washington. The application of a self-levelling, polishable cementitious topping will be shown and the benefits of topping versus complete tear-out of the floor will be described.
Concrete placement and finishing defects raised by a member of the project team may indicate a greater (unobserved) structural concern, a long-term durability issue, or simply an aesthetic problem. Concrete defects can delay the project schedule, require costly investigation fees, and necessitate removal and replacement. This presentation is intended to tackle concrete placement and finishing defects faced by the concrete construction industry. Topics will include: cold joints, delaminations, dusting, honeycombing, form leakage, plastic shrinkage cracking, floor flatness/levelness, in addition to others. This presentation will discuss the causes of these concrete defects, techniques for evaluating various defects, and approaches for mitigating these problems. Attendees will be introduced to various evaluation methods (e.g., impact-echo, ultrasonic pulse velocity, ground penetrating radar, concrete coring, petrographic examination, etc.) and when their use is appropriate.
High Traffic Commercial/Light Industrial applications including light manufacturing, warehouse/big-box stores and high traffic retail applications present their own unique challenges in concrete repair. This presentation will review concrete repair options that a focused on those application that may require both fast application/turnaround time and strength/use durability for forklifts and trucks. High Traffic Commercial/Light Industrial applications including light manufacturing, warehouse/big-box stores and high traffic retail applications present their own unique challenges in concrete repair. This presentation will review concrete repair options that a focused on those application that may require both fast application/turnaround time and strength/use durability for forklifts and trucks. While there are many option for quick repair that can be open to use in a matter of hours, it is important to acknowledge he potential limitations of these options over the long term.
The Concrete Slab Moisture Testing (CSMT) Education course is for those who are not seeking to become certified as a Concrete Slab Moisture Testing Technician (CSMTT) but have an active interest in learning more about the test methods, what information the tests provide, and how the tests are to be properly performed.
The Certification course, ICRI Concrete Surface Repair Technician—Grade 1, is for individuals who want to become a qualified inspector for concrete repair and qualifies the individual to perform pre- and post-placement inspections and testing. It includes the Education Course — five (5) online training modules and graded exams, an online knowledge exam and a performance exam (Video submission is included in course fee. When available, on-location live performance exam for an additional fee). By passing the five (5) online training modules and exams, the online knowledge exam, and performance exam, an ICRI Concrete Surface Repair Technician—Grade 1 certification will be issued by ICRI, and the individual will receive a certificate and wallet card. The individual can also be added to the ICRI Certified Concrete Surface Repair Technician database on the ICRI website if desired.