Date of Graduation


Document Type


Degree Name

Bachelor of Science in Civil Engineering

Degree Level



Civil Engineering


Murray, Cameron

Committee Member/Reader

Fernstrom, Eric


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.


Magnesium Phosphate Cement, initial setting time, cement paste mix design