03692nas a2200457 a 4500 20260818090856.0 110314s2010 th uu|m rtt 0| a1eng d .b12092113 AIT Thesis no.ST-10-09 Ghafoorzai, Abdul Habib Development of microwave curing technique to predict the 28-day compressive strength of fly ash concrete Pathum Thani, Thailand : Asian Institute of Technology, 2010 89 leaves : ill. Thesis ; no. ST-10-09 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineeri ng in Structural Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 2010 Microwave energy is applied to estimate the prediction of long-term compressive strength of normal cured fly ash concrete with and without admi xtures. The optimal process is determined through factorial design and the a pplied to fly ash concrete with and without admixtures multiple mix proportions based on ACI. The combination of two different power level of microwave oven with a rest time between is determined as the optimal process. Power level one of P10 (43 watt) for 73 minutes, power le vel two of P30 (184 watt) for 30 minutes with a rest time of 20 minutes between the power le vel is applied to fly ash concrete with 30% replacement by weight of cement. The equation to estimate the prediction is based on the correlation of accelerated strength of microwave cured concrete and normal cured concrete with reasonable accuracy of + 3.45 percentage of error at 28 days. From the investigation of calcium hydroxide and calcium silicate hydroxide analyzed by Thermogravimetry analysis (TGA), the amount of calcium hydroxide and calcium silicate hydroxide cured by one step microwave energy at one day is higher than two step microwave energy application. However, at 7 days the am ount of calcium hydroxide and calcium silicate hydroxide is almost equal for two different method of microwave energy application. Fly ash Concrete Microwave heating Pennung Warnitchai, Chairperson Thanakorn Pheeraphan, Co-Chairperson Sun Sayamipuk, Examination committee Park, Kyung-Ho, Examination committee Kanda har University, Kandahar Afghanistan, Scholarship donor Asian Institute of Technology. Thesis ; no. ST-10-09 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B03987 .b12092113 mnait u 240403 0 110314 m a u 0 000:001:PDF:b1209211:000612:0:0:0:0:0:0 Abstract-AIT Thesis no.ST-10-09 n mnait mnait mnarc 20 40 Barcode : 30050120818686 CREATED : 2009-10-15 RECORD # : i1266120x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120818678 CREATED : 2009-10-15 RECORD # : i12661211 LPATRON : 1026263 LCHKIN : 2016-10-27 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050160101035 CREATED : 2016-04-22 RECORD # : i12949115 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 29404 29404 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.ST-10-09 30050120818686 2026-08-18 09:08:56 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.ST-10-09 30050120818678 2026-08-18 09:08:56 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.ST-10-09 30050160101035 2026-08-18 09:08:56 1 2026-08-18 40