000			03442nam a2200409 4500
005			20260818133405.0
008			310798 th eng
035			_a.b10329201
099		9	_aAIT Thesis no.ST-86-12
100	1		_aKang, Ing-ren
245	1	0	_aHeat of hydration of concrete containing Mae Moh fly ash
260			_aBangkok : _bAsian Institute of Technology, _c1986
300			_a80 p.
490	1		_aThesis ; _vno. ST-86-12
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1986
520			_aA feasibility study on the use of fly ash collected from the Mae Moh Lignit e Power Plant as a pozzolana in mass concrete is conducted. Among the physical and mechanical properties investigated are the chemical composition, water requirement, pozzolanic activity index, initial and final setting times, compressive strengths, and heat of hydration. The main parameter considered in the experimental program is the percentage of fly ash replacement. All tests are conducted in accordance with ASTM standards except the test for heat of hydration which followed the British Standards Institution. Test results shows that the chemical composition and physical properties of Ma e Moh fly as h satisfied the ASTM requirements and can be classified as pozzolana class C. This is the first time that fly ash samples collected from the Mae Moh Lignite Power Plant met the specifications given by the American Society for Testing and Materials Standards. At early ages, the strength of fly ash cement mortars were lower than those of the corresponding control mortars, however , at later ages, up to 90 days, the strengths of fly ash cement mortars were substantially higher than that of the corresponding control mortar. It is recommended that fly ash can be used as replacement for cement up to 35 percent without adverse effects on the concrete. The combination of fly ash and Portland cement produced a lower heat of hydration and a consequently lower temperature rise than an equal amount of portland cement without fly ash. The rate of heat evolution of fly ash was very much slower than that of the ordinary portland cement during the early age which is considered as the critical period in mass concreting.
650		0	_aHeat of hydration
650		0	_aFly ash
650		0	_aConcrete construction
700	0		_aPichai Nimityongskul, _eChairperson
700	1		_aBrotton, D.M., _eExamination Committee
700	1		_aKarasudhi, Pisidhi, _eExamination Committee
710	2		_aGovernment of R. 0. C., Scholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. ST-86-12
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B19740
907			_a.b10329201 _bmnait _cs
902			_a240402
998			_b2 _c951012 _dm _ea _fs _g0
945			_lmnait
945			_lmnarc
942			_c22
942			_c40
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