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001			vtls000102783
003			KUKTEM
005			20251117113346.0
008			180117s2017 my da f am 000 0 eng d
020			_aTHE0000550(Local)
039		9	_a201905151625 _bnazirah _c201802201125 _dsaini _c201801221016 _dsaini _c201801171245 _dsaini _y201801171241 _zsaini
040			_aUMP _beng _cUMP _erda
090			_aFKASA .L87 2017 r Bc.
100	0		_aMohamed Luqman Mohamed Roslan, _eauthor.
245	1	0	_aStudy of cold joint concrete by infrared thermography and ultrasonic pulse velocity / _cMohamed Luqman Mohamed Roslan
264		1	_aKuantan, Pahang : _bUMP, _c2017
264		4	_c© 2017
300			_ax, 42 pages : _billustrations (some color), charts ; _c30 cm. + _e1 CD-ROM
336			_atext _2rdacontent
336			_atext _2rdacontent
337			_aunmediated _2rdamedia
337			_acomputer _2rdamedia
338			_avolume _2rdacarrier
338			_acomputer disc _2rdacarrier
347			_atext file _bPDF _2rda
500			_aFaculty of Civil Engineering and Earth Resources
502			_aProject Paper (Bachelors of Civil Engineering) -- Universiti Malaysia Pahang – 2017
504			_aIncludes bibliographical references
520	3		_aInfrared thermography (IRT) has been used in civil engineering field such as highway, bridge and concrete structure. IRT provides non-destructive method to analyse defects on structure including crack. Cold joints are formed primarily between two batches of concrete where the delivery and placement of the second batch has been delayed and the initial placed and compacted concrete has started to set. The full knitting together of the two batches of concrete under vibration to form a homogeneous mass is therefore not possible, unlike the compaction of two fresh workable batches of concrete. This could be a potential plane of weakness. The objective of this research are to analyse the cold joint of concrete when loading applied and to determine uniformity of cold joint concrete using Ultra Pulse Velocity (UPV). Thermography is specialized in subsurface damage identification due to anomalies that inhomogeneity impose on the temperature field. Additionally, ultrasonic waves are constrained near the surface and therefore, are ideal for characterization of near-surface damage. In this study, an infrared camera scans cold joint beam structure and analyse crack happen at cold joint during loading. Colour summarization software will analyse the colour at cold joint and the entire beam. Through software, the difference of colour could be seen between the crack section and non-crack section. Based on the research, infrared images produced does not differentiate between cold joints section and other part of beam. Through flexural test it is found that crack formed through the cold joint as there is no other part of beam produced crack when loading applied. Unfortunately the infrared camera cannot capture the image which have brighter colour such as red, orange or yellow. The colour of the beam become blue because the machine of flexural test more dominant in temperature so the colour of one part of the machine brighter than the beam. Behind the machine itself, sunlight penetrate through the windows. Based on Ultra Pulse Velocity result, pulse velocity concrete casting day 1, day 2 and at the cold joint are higher than 4 km/s which means concrete quality is good and the speed is uniform. The UPV reading at cold joint have a decreasing trend compared to reading at same day casting section. In conclusion, the colour summarization of beam using IRT image cannot be achieved as the colour have little variation. As for UPV result, at cold joint section the reading is smaller compared to section casting on the same day and it is still under good category for time lag 24 hours.
610	2	0	_aFaculty of Civil Engineering and Earth Resources _xDissertations
650		0	_aUniversities and Colleges _xDissertations
650		0	_aTheses
999			_aVIRTUA40 _c7314 _d7320
999			_aVTLSSORT00800200040009001000245026402641300033603361337033713380338134705000502050405200610065006501*9992