Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   LAB TOUR: X-Ray Fluorescence Lab   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   LAB TOUR: Million-PSI compression testing device (approx 20 feet tall), seen from balcony.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   WELCOME: Chicago ACS Chair Anthony Toussaint welcomes attendees and introduces the speaker, Don Broton.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.  TALK: Speaker Don Broton introduces himself, CTLGroup, and his talk.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   LAB TOUR: Thermogravimetric (TGA) Lab.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.  LAB TOUR: General chemistry lab    - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   LAB TOUR: Laura shows us the Scanning Electron Microscope lab, which includes a case of precious cement and concrete samples.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   LAB TOUR: Precious cement and concrete specimens, including a 9800-year-old piece of the world's oldest concrete floor.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   LAB TOUR: Precious specimens of cement and concrete. Oldest portland cement concrete in America, 1844 (R). Piece of the Berlin Wall (painted, center).    - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   LAB TOUR: Laura shows us concrete samples that had been subjected to various stressors, such as water, acid, base, radiation, etc.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   LAB TOUR: Decorative ceramic, mineral, stone, awards, and other objects line the library at CTLGroup.  - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.    WELCOME: Chicago ACS Chair Anthony Toussaint welcomes the audience and introduces the speaker, Don Broton.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   TALK: Speaker Don Broton begins his talk.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   TALK: Speaker Don Broton outlines his talk.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   TALK: Speaker Don Broton's summary of raw materials used in cement.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   TALK: Speaker Don Broton's illustration of a cement kiln.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   TALK: Speaker Don Broton's summary of cement's composition.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   Q&A: Chicago ACS Chair moderates Q&A with speaker Don Broton.   - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   T-SHIRT Presentation: Chicago ACS Chair Anthony Toussaint presents speaker Don Broton with the traditional C-H-I-C-Ag-O elements T-shirt  - photo by Josh Kurutz

Feb 2018 Chicago ACS meeting at CTLGroup, /Concrete chemistry: Secrets to a modern day construction marvel/.   THANKS: Chicago ACS House Co-Chair Simonida, with Chair Anthony Toussaint, thanks attendees for coming.   - photo by Josh Kurutz