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035			_a.b10176378
099		9	_aAIT Thesis no. ST-79-27
100	0		_aPisarn Siripatt
245	1	0	_aCreep and shrinkage of high strength concrete
260			_aBangkok : _bAsian Institute of Technology, _c1979
300			_aiv, 39 p.
490	1		_aThesis ; _vno. ST-79-27
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,1979
520			_aThe main purpose of this work is to examine the magnitudes of creep and shrinkage of various concretes. Concretes of four different strengths were used for this purpose. Their target strengths at 28 day age were 30, 50, 65 and 80 N/mm2. The specimens were cured in a fog room for about 35 days and were, then, tested for creep and shrinkage for 120 days. The test were performed in the room where temperature and humidity were controlled at (22 ± 2)0c and 80% R.H. , respectively, Following are the main findings. 1. Creep and shrinkage of higher strength concrete were smaller compared with those of lower strength concrete. 2. A linear r elation between creep and stress- strength ratio exists also in the case of very high strength concrete if the stress- strength ratio is less than 40%. 3. The smaller creep and shrinkage of higher strength concrete can be explained by the existence of smaller amount of hydration products which are responsible for the creep and shrinkage.
650		0	_aCreep of concrete
650		0	_aConcrete _xExpansion and contraction
700	1		_aYamamoto, Yasuhiko, _eChairperson
700	1		_aKawaguchi, Masahiro, _eExamination Committee
700	1		_aWorsak Kanok-Nukulchai, _eExamination Committee
710	2		_aThe Canadian Government, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. ST-79-27
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B22346
907			_a.b10176378 _bmnait _cs
902			_a250626
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