Title

Reactivation of Inhibited Modified Portland Cement

Department

Chemistry

Major

Chemistry

Research Advisor

Schuman, Thomas P.

Advisor's Department

Chemistry

Abstract

Concrete has been used extensively as a foundational structural material for construction because of its relatively higher strength, high durability, facile fabrication, and better noncombustibility properties as compared to other materials. Portland cement is one of the commonly used binder materials in concrete matrices. Last academic year, the student's research group found compounds that can inhibit the hydration of Portland cement for at least eight hours. This 2021-2022, the group attempted to reactivate the retarded Portland cement using different chemical species. It was found that acidic species have no significant contribution in reactivation while some salts were able to reactivate the retarded Portland cement. Addressing reactivation of Portland cement hydration is necessary in the construction industry because it could allow companies to set cement when desired. Reactivating the hydration is also useful in wet conditions when a cement is at risk of being washed off immediately.

Biography

Glad is a senior studying chemistry emphasizing in Polymers and Coatings Science. He has been doing research since 2019 in the Department of Chemistry. He also works as a tutor at the Student Success Center, where he mainly tutors chemistry. In his free time, he plays tennis and watches anime.

Presentation Type

OURE Fellows Final Oral Presentation

Document Type

Presentation

Location

Ozark Room

Presentation Date

14 Apr 2022, 10:30 am - 11:00 am

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Apr 14th, 10:30 AM Apr 14th, 11:00 AM

Reactivation of Inhibited Modified Portland Cement

Ozark Room

Concrete has been used extensively as a foundational structural material for construction because of its relatively higher strength, high durability, facile fabrication, and better noncombustibility properties as compared to other materials. Portland cement is one of the commonly used binder materials in concrete matrices. Last academic year, the student's research group found compounds that can inhibit the hydration of Portland cement for at least eight hours. This 2021-2022, the group attempted to reactivate the retarded Portland cement using different chemical species. It was found that acidic species have no significant contribution in reactivation while some salts were able to reactivate the retarded Portland cement. Addressing reactivation of Portland cement hydration is necessary in the construction industry because it could allow companies to set cement when desired. Reactivating the hydration is also useful in wet conditions when a cement is at risk of being washed off immediately.