- Presenters:
- Scott DiStefano | Mrs. Eri Vokshi
- Duration:
- 18 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- The installation of externally applied FRP systems has been slow to evolve due to limitations of materials used in the field. This demonstration will show how to make the most out of the materials with efficient application methods that will save time and money.
- Price:
- $0.00 - $5.00
- Presenters:
- Dr. Farhad Habibi, PhD | Justin Breg, PhD
- Duration:
- 36 Minutes
- Format:
- Audio and Video
- License:
- Access for 6 month(s) after purchase.
- Short Description:
- Alkali-Silica Reaction (ASR) can cause significant damage to concrete structures including bridges, roadways, airport runways, and nuclear power plants. When reactive aggregates are included in a mix, the presence of moisture initiates a reaction between the alkaline cement paste and reactive amorphous silica. The result is a gel that continues to dilate, which may cause cracks in the concrete mass. A research program was undertaken at the University of Toronto to investigate the effects of ASR on large-scale and small-scale concrete specimens. Several specimens were constructed using reactive (ASR) concrete and non-reactive (regular) concrete, and their short-term and long-term structural and mechanical behavior were compared. In this presentation, we will discuss the results of the research program, will offer best practices to minimize the risk of ASR in concrete during placement, and will propose several strategies for repair of structures that have been degraded due to ASR.
- Price:
- $0.00 - $40.00
- Presenters:
- Mr. Scott Bergsbaken | Mr. Kelly LaJeunesse
- Duration:
- 10 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- 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.
- Price:
- $0.00 - $5.00
- Presenters:
- Mr. Leon Geoxavier
- Duration:
- 29 Minutes
- Format:
- Audio and Video
- License:
- Access for 6 month(s) after purchase.
- Short Description:
- 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.
- Price:
- $0.00 - $40.00
- Presenters:
- Brian Mintz | Juan Bedoya
- Duration:
- 14 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- Phoscrete is an easy-to-use, fast-setting, long-lasting Magnesium-Alumina-Liquid-Phosphate (MALP) concrete repair material for repairs in extreme environments (-15°F to +115°F). Instead of water, Phoscrete’s pre-extended dry component mixes include Liquid Phosphate Activator (Freezing Point = -20°F). Working time and set time are easily controlled by supercooling the activator in hot temperatures, and by adding fast-set admixtures in cold temperatures. The presentation will include laboratory testing, field installation, and a small installation.
- Price:
- $0.00 - $5.00
- Presenters:
- Marthe Brock
- Duration:
- 50 Minutes
- Format:
- Audio and Video
- License:
- Access for 6 month(s) after purchase.
- Short Description:
- From the days of boiled Linseed oil, to the discovery of membrane forming cures, to the development of carbon dioxide injection; curing has evolved to accommodate the demands of the construction industry. This presentation will look back at the early standards developed by ASTM, contrasting them to the standards that are currently under consideration. There are many ways to cure concrete, this presentation will review the various product options framed in the context of weather. Lastly, the presentation will explore the various methods discussing the features and benefits of the common curing practices of today.
- Price:
- $0.00 - $40.00
- Presenters:
- Stephen Lucy
- Duration:
- 49 Minutes
- Format:
- Audio and Video
- License:
- Access for 6 month(s) after purchase.
- Short Description:
- Dallas City Hall and Plaza are recognized by many due to the opening scenes of Dallas, the television show. What is less known is that the structure is a significant early example of bonded post-tensioned concrete which was utilized throughout the superstructure and two-story parking garage constructed beneath the plaza. Opened in 1977, the parking garage is a two-way bonded post-tensioned concrete slab with unreinforced drop panels supported by flared circular concrete columns. The garage covers two city blocks, extends under two adjacent multi-lane streets, and supports mature landscaping, pool, fountain, and up to 11’-0” of soil. In 2017, several square feet of a drop panel fell from the structure and subsequent observations found multiple locations of drop panel and column capital failures. A structural investigation including destructive and non-destructive testing, and analysis of the existing structure was undertaken to determine the cause of the failures.
- Price:
- $0.00 - $40.00
- Presenters:
- Nick Savage | Andrew Donaldson
- Duration:
- 7 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- 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.
- Price:
- $0.00 - $5.00
- Presenters:
- Nemkumar Banthia | Patrick McConnell
- Duration:
- 15 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- EDCC is an extremely novel and first of its kind application for use primarily in the seismic retrofit of unreinforced masonry walls. This spray-on technology incorporates a highly sustainable and cost-effective mixture of recycled admixtures that have proven to be extremely effective at greatly enhancing the ductility and strength of unreinforced structures. Its ease of placement and unique flexural advantages make it very unique in the field of seismic upgrade with the potential for additional applications with other infrastructure improvements.
- Price:
- $0.00 - $5.00
- Presenters:
- Alfred Gardiner
- Duration:
- 34 Minutes
- Format:
- Audio and Video
- License:
- Access for 6 month(s) after purchase.
- Short Description:
- Two projects will be explored in this presentation. The first is a concrete structure which for 20 years was exposed to extreme heat. The second is a structure which was exposed to extreme vibrations. Both these structures were integral parts of manufacturing processes and required limited down time to repair. The questions needing to be answered were: what is the condition of the existing concrete and what are the repair options for these structures. We turned to non-destructive techniques to evaluate these structures. Non-destructive techniques can provide insight into structures when accompanied by experienced engineers and petrographic analysis. Repair options were provided at the end of our evaluation leading to reduced down time and well-planned repairs.
- Price:
- $0.00 - $40.00
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