Date of Graduation

5-2020

Document Type

Thesis

Degree Name

Bachelor of Science in Civil Engineering

Degree Level

Undergraduate

Department

Civil Engineering

Advisor/Mentor

Murray, Cameron

Committee Member/Reader

Barry, Michelle L.

Committee Member/Second Reader

Williams, Rodney

Abstract

The recent increase of flooding in the United States and the high expenses related to the damage that these floods have caused to waterway structures suggests a potential interest in rapid setting soil cement to make effective repairs. For this thesis, mix designs of soil only at three different sand-clay proportions were prepared and tested for moisture content and maximum dry density. Due to the early closing of the laboratory and research activities, reliable results were collected from the 70% sand and 30% clay proportions. At those proportions of soil, the optimum moisture content was found to be 8.88% with a maximum dry density of 20.76 kN/m3. Even though a test using 6 % of belitic calcium sulfoaluminate (BSCA) cement at 70% sand and 30 % clay proportions was performed, the test was unsuccessful because of a significant change in moisture content compared to that previously found. Further testing is required in order to determine the ideal quantity of BSCA cement to be used for different soil-cement mix design proportions. This thesis recommends as the next step the testing of the 70% sand and 30 % clay soil proportions with 5, 7 and 9 percent of BSCA and OPC cement by weight at 7,8,9,10 and 11 percent water content. The comparison between the development of strength will be tested by performing unconfined compressive strength tests. This will allow a comparison of the behavior of the BSCA cement with portland cement, and lead to guidance on proper soil-cement proportioning with BCSA cement.

Keywords

BSCA; rapid setting cement; belitic calcium sulfoaluminate cement

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