03281nas|a2200445 i 4500 20260817162920.0 010713s2001 th uzm rtt 00| a1eng d .b11829448 AIT Thesis no. ST-01-03 Jirapong Wachirathamrojn An application of microwave curing technique to predict the 28-day compressive strength of normal concrete containing Mae-Moh fly ash Bangkok : Asian Institute of Technology, 2001 108 leaves Thesis ; no. ST-01-03 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering Thesis (M.Eng.) - Asian Institute of Technology, 2001 The accelerated strength of concrete cured with microwave energy is measured to estimate the 28-day compressive strength of normal concrete containing fly ash. The optimal microwave curing process involving heating duration, power, delay time, early age test time and later age test time, is determined first and then is employed to establish the 28-day strength estimation equation. Test parameters include the amount of fly ash replacement, namely 0%, 10%, 20% and 30% by weight of cement and mix proportions. The n01mal concrete mix proportions are designed according to the ACI mix design by using OPC Type I, Mae-Moh fly ash, river sand and limestone. The compressive strengths of 3"x6" specimens with various fly ash replacements and mix proportions are tested at the possible early age at 6.5 hours for microwave-cured specimens and at 28 days for normally cured specimens. A simple equation involving only 6.5-hour strength and percent of fly ash replacement can then be established for 28-day strength estimation. Based on the established equation, the estimation yields the average and maximum percentage of error at 5 and ±12. Concrete Curing Strength of materials Concrete Additives Pichai Nimityongskul, Chairperson Thanakorn Pheeraphan, Co-Chairperson Nii, Kazuyoshi, Examination Committee Takewaka, Koji, Examination Committee Royal Thai Government I Human Resource Development Program (Phase II), Scholarship Donor Asian Institute of Technology. Thesis ; no. ST-01-03 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B09441 .b11829448 mnait u 240405 0 010713 m a u 0 mnait mnait mnarc 20 40 Barcode : 30050120746572 CREATED : 2000-02-14 RECORD # : i12248617 LPATRON : 1026263 LCHKIN : 2016-10-27 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 8 TOT RENEW : 12 Barcode : 30050120746549 CREATED : 2000-02-14 RECORD # : i12248630 LPATRON : 1020140 LCHKIN : 2008-12-19 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 5 TOT RENEW : 10 Barcode : 30050160066808 CREATED : 2016-04-20 RECORD # : i12941633 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 6707 6707 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no. ST-01-03 30050120746572 2026-08-17 16:29:20 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no. ST-01-03 30050120746549 2026-08-17 16:29:20 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. ST-01-03 30050160066808 2026-08-17 16:29:20 1 2026-08-17 40