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.
The prestressed beams in the Hampton Roads Bridge Tunnel Approach Spans were fabricated in about 1960 (west bound lane) and 1970 (east bound lane). The spans are 50-ft and 75-ft, respectively. The brackish water environment caused corrosion and failure of the bottom strands and deterioration and spalling of the cover concrete in many beams. A project in 2018 strengthened 30 of the more deteriorated beams as an alternative to posting or replacing the bridges. Carbon fiber composite wrap (CFCW) and external post-tensioning (PT) were used to strengthen the beams. Prior to construction, a PT mockup was done with one 50-ft (flexible filler) and one 75-ft (grout) beam to demonstrate that the contractor had the materials, equipment and staff to successfully do the external PT. This presentation describes the project’s mockups and construction and the anticipated increase in strength to be obtained from application of the CFCW and external PT.
This demonstration will take the audience through the entire process involved in the safe and effective installation of our GeoTree RenewWrap CFRP product.
The general sentiment around construction and modern technology is that the industry has been slow to embrace it. While this is true of the past, the current and future construction industry is all about modern technology. Not only does technology help to make the industry safer (something that has been a struggle for a very long time), but it is helping contractors to take back control of their budgets, to make smarter choices about project planning and equipment and is, consequently, pushing the green-construction trend forward. The purpose of this presentation is to provide a summary on the current technologies being used in the construction industry with a focus on concrete and to dig even further as to how these can be applied to repair projects. It will provide case studies on how using technology to bring ambient and concrete temperature, relative humidity and strength (among other) data online can help contractors be more efficient.
This demonstration will introduce the WJE CASLE™ (Corrosion Assessment Service Life Evaluation) software for predicting corrosion-related damage in reinforced concrete structures. This tool helps engineers more effectively quantify remaining service life and guide repair decisions for existing structures, as well as evaluate protection/durability design strategies for new structures. Developed in-house by WJE’s materials engineers for WJE structural assessment projects, WJE CASLE™ offers full control of the evaluation process and facilitates a customizable approach to construction parameters and exposure conditions unique to each project. Advantages of the software include consideration of site-specific conditions such as construction geometry, sealers, coatings, corrosion-resistant reinforcing, presence/installation of overlays, existing chloride profiles, concrete cracking, and two-sided exposure. Model features will be outlined with a focus on evaluation of existing structures.
The demonstration will cover the basic steps, products, and processes involved with dying and polishing concrete. The equipment, tooling, chemicals, and processes used to achieve a polished floor will be demonstrated.
Shotcrete has been used widely for rehabilitation and retrofit of concrete structures. More and more large infrastructures, in particular, in the hydro power industry, is using shotcrete for major rehabilitation and retrofit. Recently, the US Army Corps of Engineers has been engaged in structural modifications to reinforced concrete draft tube exits from the turbines in the Ice Harbor Lock and Dam located on the Snake River, Washington. This presentation details the structural modification to the draft tube which was successfully completed using wet-mix shotcrete.
This unique webinar specifically focuses on the technology, process & application of using high-pressure water to remove concrete, called Hydro Demolition.
As long as there is concrete there will be concrete cracks. There is no shortage of repair methods for cracked concrete but the challenge is to find the right one that meets your specific needs. This product demonstration will cover polyurethane injection for leak mitigation. The area of focus will be understanding why concrete cracks, when to use polyurethane or epoxy injection, safety and equipment required for injection work, and lastly, the injection process itself.