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Poster Presentation at the Conference, with a Paper in Conference Proceedings

Concrete Mixture Characterization

Session: Meet the Author - Poster Session PS-4

1367901 - Effect of Deicing Chemicals and Fly Ash on Durability and Mechanical Properties of Concrete

Friday, June 16, 2023
10:30 AM – 12:00 PM CST
Room: Governor's Grand Ballroom
Salon ABC
TRACK: Poster Presentation with a Paper in the Proceedings
Using deicing chemicals, such as Sodium Chloride (NaCl), on roadways lowers water’s freezing point, resulting in less skidding, less hydroplaning, and more friction on the road. NaCl is notorious for corroding reinforcement structures and is prone to environmental factors, resulting in runoff and dilution. NaCl has limitations regarding its deicing capabilities; therefore, a supplement should be used to decrease corrosion and aid in lowering the freezing point. AMP is a liquid inhibitor specifically used to augment NaCl for deicing roads. Incorporating AMP as a solute in NaCl brine increases bonding to the surface and lowers the water’s freezing point. This study was conducted to explore the optimum solution with respect to hardened concrete properties and freeze-thaw resistance for concrete containing 20% fly ash replacement for cement. The effect of AMP on the durability and mechanical properties (compressive strength, tensile strength, and flexural strength) of concrete was investigated. The durability of concrete was determined using mass loss due to freeze-and-thaw and the relative dynamic modulus (RDME). Replacing up to 20% of NaCl with AMP had a positive impact. The freeze-thaw results indicated an increase in resistance when the cement was replaced with fly ash. The abstract is based on preliminary results. Additional results will be included in the paper.

Learning Objectives:

Attendees can expect to learn the following from this session:
  • Describe the effects of deicing chemicals on the mechanical properties of concrete.
  • State the effect of fly ash on the durability of concrete under deciding chemicals.
  • Describe additives that reduce the impact of deicing chemicals on the durability of concrete.