News and Events
PhD Defense: Damage Development, Phase Changes, Transport Properties, and Freeze-Thaw Performance of Cementitious Materials Exposed to Chloride Based Salts
Yaghoob Farnam defended his PhD thesis titled "Damage development, phase changes, transport properties, and freeze-thaw performance of cementitious materials exposed to chloride based salts" under the supervision of professor Jason Weiss. Recently, there has been a dramatic increase in premature deterioration in concrete pavements and flat works that are exposed to chloride based salts. Chloride based salts can cause damage and deterioration in concrete due to the combination of factors which include: increased saturation, ice formation, salt crystallization, osmotic pressure, corrosion in steel reinforcement, and/or deleterious chemical reactions. This thesis discusses how chloride based salts interact with cementitious materials to (1) develop damage in concrete, (2) create new chemical phases in concrete, (3) alter transport properties of concrete, and (4) change the concrete freeze-thaw performance. To mitigate the damage and degradation due to the chemical phase transition, three approaches were evaluated: (1) use of a cementitious binder that does not react with salts, (2) use of a new practical technology (phase change material) to melt ice and snow, thereby decreasing the demand for deicing salt usage, and (3) use of sealers.
Read More, April 2015
Yaghoob Farnam Receives 2014 Portland Cement Association J.P. Gleason Fellowship Award
Yaghoob Farnam, PhD Candidate in the Civil Engineering Materials Group, has been named a recipient of the 2014 PCA Education Foundation J. P. Gleason Fellowship. The support provided by the Education Foundation is used to identify and attract outstanding candidates in the field of the cement and concrete. Yaghoob is one of four students who were selected in 2014 for this prestigious award.
Read More, May 2014