Why Glue Don’t Work
September 18, 2021 from 11:30am to 12:30pm Central Standard Time
Hyatt Regency 4th Floor - Grand F-H
Measuring the unintended impact of chemical curing agents, bond breakers, and densifiers on concrete surface free energy.
Tilt projects can be a series of conflicting goals. Maybe none more prevalent then the pursuit of a perfect concrete slab for casting beautiful panels and using adhesives to bond forming materials. Building owners want tight, densified concrete slabs and tilt-contractors want to get the project moving minimizing steps and slab curing times. So, as an industry we have turned to chemicals to get the job done. Densifiers are more prevalent and bond breakers are being used as curing compounds. Unfortunately, both of these solutions negatively impact the concrete’s surface free energy, in other words “it makes the glue not work.”
Over the last year, GluDown has been researching ways to accurately measure concrete slab surface free energy, identify potential challenges from these measurements, and provide corrective actions for glue down job success. We will present these findings to the TCA to open the industry’s eyes to this challenge, hopefully generate discussion on how to use this information, and ultimately create specifications which will better tilt-up forming practices.
LEARNING OBJECTIVES
- Using Young’s Equation, we can measure and quantify the Surface Free Energy of concrete slabs.
- Addition of chemical agents and/or the order they are applied to the concrete slab can negatively impact the success of adhesives on “No or Minimal Hole” specified concrete slabs. This failure can lead to drill holes which would be otherwise unnecessary.
- Analyzing Surface Free Energy measurements, we can project the success of using adhesives to form materials.
- No or minimal hole (glue down) jobs should have a specified concrete slab surface free energy target.
TRACK SPONSOR - IconX, LLC
ICONX LLC produces and distributes the IconX Shear Connector line. With a new 5"- 6" connector being introduced to the family this year, we are now able to support you on projects with insulation thickness from 2" all the way up to 6" and everything in between, making IconX the smart choice for your high performance insulated wall panels. The foundational goal of the IconX System was to develop a shear connector to make insulated wall panels longer, stronger, and stiffer than previously available. It was also important for the connector to work with any rigid insulation in panels reinforced with mesh or rebar. Due to the composite action that the IconX Shear Connector facilitates between the wythes of concrete, the total concrete thickness can be reduced by 3 to 4 inches over conventional non-composite panel design, saving you material costs and potentially reducing your crane size and footing and foundation sizes. Simply put, we can do more for less. We are committed to helping you have a successful project with us. Contact us by phone or email, or come meet us at the TCA show to discuss what we have to offer.
Booth number: 217 | Learn more about IconX, LLC >
TRACK SPONSOR - Seretta Construction, Inc.
Seretta was founded in 1987 in Orlando, FL and now has offices in Orlando, Charlotte and Austin. We perform complete foundation, slab, tiltwall and paving packages. We also perform high tolerance and specialty slabs. We work throughout the Southeast, Mid-Atlantic, Gulf Coast and Southwestern United States.
TRACK SPONSOR - Total Integrated Panel Systems
Total Integrated Panel Systems (TIPS) designs and manufactures products that are meant to greatly enhance the construction industry. We create products that will build better structures, require less effort, and increase profitability for contractors and end users. We have now developed the Total Integrated Panel System (TIPS) for tilt-up. This revolutionary, patent pending, prefabricated system integrates structural steel, insulation, and labor into one fully composite product. It is an industry first solution that produces stronger, lighter, insulated panels, while also reducing rebar, concrete, and labor use. Our project development and product education teams are eager to provide you with the information you need to make your next job more successful than ever.
Booth number: 401 | Learn more about Total Integrated Panel Systems >
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Tilt-Up Concrete Association (TCA)
PO Box 204
402 1st Avenue SE
Mount Vernon, IA 52314
United States
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About the Tilt-Up Concrete Association
Founded in 1986, the Tilt-Up Concrete Association (TCA) strives to improve the quality and acceptance of site-cast Tilt-Up construction - one of the fastest growing industries in the United States, combining the advantages of reasonable cost with low maintenance, durability, speed of construction and minimal capital investment. Over 10,000 buildings, enclosing more than 650 million square feet, are constructed each year using this construction method.
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