Date of Graduation
5-2024
Document Type
Thesis
Degree Name
Bachelor of Science in Civil Engineering
Degree Level
Undergraduate
Department
Civil Engineering
Advisor/Mentor
Murray, Cameron
Committee Member/Reader
Fernstrom, Eric
Abstract
Magnesium phosphate cement (MPC) is a cementitious material that is formed through an acid-base reaction between magnesia and phosphate. This reaction occurs rapidly, making MPC an appealing choice for rapid repair applications. The purpose of this project is to investigate the impact of different proportions of class F fly ash, set retarder consisting of a mixture of boric acid and dextrose, magnesium to phosphate ratio, and water/cement ratio on the initial setting time of MPC paste. Different mixtures of MPC paste were developed to vary the proportions of each constituent, and setting time of each mixture was determined using the Vicat apparatus. This data was collected and compiled to show the impact of each individual component on the initial setting time. Increasing magnesium to phosphate ratio accelerated setting. Increasing fly ash replacement rate, set retarder dosage, and water/cement ratio delayed the time of initial setting.
Keywords
Magnesium Phosphate Cement; initial setting time; cement paste mix design
Citation
Broglen, A. (2024). Investigation into the Effect of Mixture Composition on Setting Time of Magnesium Phosphate Cement. Civil Engineering Undergraduate Honors Theses Retrieved from https://scholarworks.uark.edu/cveguht/83
