03943nas a2200433 a 4500 20260818090852.0 110314s2010 th uu|m rtt 0| a1eng d .b12092162 AIT Thesis no.ST-10-14 Monsan Visesgahamin Development of magnesium phosphate cement rapid reapir mortar Pathum Thani, Thailand : Asian Institute of Technology, 2010 75 leaves : ill. Thesis ; no. ST-10-14 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 2010 A study was focused on investigating the properties of Magnesium Phosphate Cements (MPCs) and optimizing the mix proportion of Magnesium Phosphate Cement. The pozzolans namely fly ash and metakaolin have been selected as constituents to improve the quality of Magnesium Phosphate Cements. The magnesium and phosphate were used in the amount of 10 percents to 30 percents by weight of cement whereas the percentage replacement of fly ash and metakaolin were varied from 10 percents to 30 percents by weight of cement, respectively. The water to binder ratio (W/B) of the mixtures was fixed at 0.45. For the first phase, the optimization mix proportion which gained the highest compressive strength at the age of 24 hours and 72 hours was used as the main constitute for all MPCs mixes in the second phase. For the second phase, the physical and mechanical properties such as the setting time, bonding strength, flexural strength, and compressive strength at age 6 hours, 24 hours, 72 hours, 168 hours, 672 hours and 2,184 hours were determined. For phase I, it was found that the optimum mix proportion of the MPCs mortar composed of sand/binder (s/b) ratio of 2.0 and binder which was 90 percents of Ordinary Portland Cement, 5 percents of Magnesium and 5 percents of phosphate. When the fly ash and metakaolin were replaced Ordinary Portland cement, the results indicated that the use of fly ash replacement in MPCs mortars extended the initial and final setting times, but led to reduction of compressive strength, flexural strength and bonding strength. Whereas the MPCs mortar containing metakaolin can increase the compressive strength, flexural strength, bonding strength, but the setting time was decreased. Hence, the metakaolin can be used as cement replacement in MPCs cement and enhanced the performance for making the repaired cement mortar. Concrete Mortar Pennung Warnitchai, Chairperson Sun Sayamipuk, Co-chairperson Thanakorn Pheeraphan, Examination Committee RTG Fellowship, Scholarship donor Asian Institute of Technology. Thesis ; no. ST-10-14 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B03992 .b12092162 mnait u 240403 0 110314 m a u 0 000:001:PDF:b1209216:000617:0:0:0:0:0:0 Abstract-AIT Thesis no.ST-10-14 n mnait mnait mnarc 20 40 Barcode : 30050120816821 CREATED : 2009-10-15 RECORD # : i12661302 LPATRON : 1023574 LCHKIN : 2012-11-07 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050120816763 CREATED : 2009-10-15 RECORD # : i12661314 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160101068 CREATED : 2016-04-22 RECORD # : i12949024 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 29384 29384 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.ST-10-14 30050120816821 2026-08-18 09:08:52 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.ST-10-14 30050120816763 2026-08-18 09:08:52 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.ST-10-14 30050160101068 2026-08-18 09:08:52 1 2026-08-18 40