This presentation aims at providing clear and down to earth definitions of what Post-Tensioning systems are, the different repair strategies related to these systems, and critical factors to be accounted for during the design and execution of any intervention on a Post-Tensioning slab.
How to properly mix, place and finish MG-Krete, a 2-component product and permanent repair material, will be demonstrated. The demonstration will show methodologies employed in horizontal, vertical, overhead and structural repairs using MG-Krete. Participants will learn the chemistry behind the product and the reason why it is a successful permanent repair material. There will be a full technical review of the product benefits.
This presentation looks at buildings that are new or being rehabilitated and the impact on making buildings more energy efficient. Starting with the 2012 IBC, and specifically the 2012 IECC portion of the building code and newer versions, the presentation will look at three aspects of the building envelope: Water Resistance, Air Leakage, and Moisture Transmission. It will then compare to identical buildings, the first built in 2000 and the second constructed in 2020. Illustrations and calculations will show how controlling air leakage can have an enormous impact on the service life of the structure, initial cost of construction, and on-going operations. Lastly, the presentation will look at how incorporating simple additions during the repair/rehabilitation process can have a positive impact on the environment as well as the building owner and the building’s constituents.
The demonstration will show the application of the Black Pearl® Waterproofing System. Unlike “weatherproofing”, a true waterproofing membrane will maintain its watertight integrity and prevent the passage of liquid under dynamic, static, continuous, or intermittent hydrostatic pressure. Black Pearl® is a true waterproofing membrane composed of two primary products: Black Pearl® Primer Adhesive and Black Pearl® Waterproofing Membrane. These components are based upon the same core formula of select, unoxidized asphalt cement base, butyl rubber, SIS, neoprene rubber, SBS, carbon black, fillers, plasticizers and curing agents. The Black Pearl® Primer Adhesive also has an aliphatic solvent that is within acceptable OSHA and EPA current regulations. Black Pearl® Waterproofing Membrane is a 55-mil woven polyester fabric impregnated with the Black Pearl® rubberized formula, providing extra tensile strength and stability.
This bundle includes the 110.1 (2016), 110.2 (2020), 110.3 (2021). 330.2 (2016) Guide Specifications. The documents cover Guide Specifications for Structural Concrete Repair, Epoxy Injection, Guide Specifications for Cementitious Bonded Overlay, and Externally Bonded FRP Fabric Systems for Strengthening Concrete Structures, respectively.
This bundle includes the 110.1 (2016), 110.2 (2020), 330.2 (2016) Guide Specifications. The documents cover Guide Specifications for Structural Concrete Repair, Epoxy Injection, and Externally Bonded FRP Fabric Systems for Strengthening Concrete Structures, respectively.
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.