000			a
999			_c8526 _d8526
003			OSt
005			20190315153005.0
008			190315b xxu||||| |||| 00| 0 eng d
040			_aAIKTC-KRRC _cAIKTC-KRRC
100			_98057 _a Panda, Rama Prasad
245			_aEstimating in situ optimum bitumen content of dense bituminous macadam: An alternative approach
250			_aVol. 99(4), December
260			_aKolkata _bSpringer _c2018
300			_a653-659p.
520			_aOptimum bitumen content (OBC) in dense bituminous macadam (DBM) in India is determined using Marshall mix design method, which simulates the field condition in laboratory. It is a cumbersome, temperature-controlled laboratory process varies widely from the actual field condition. To overcome this mismatch, an easy empirical method is attempted for calculating in situ OBC in DBM. In the process, the OBC is calculated as a function of physical properties of the materials used in DBM for bitumen viscosity grade-30 (VG-30) and compared with the actual bitumen consumptions in the field samples obtained through bitumen extraction test. The laboratory DBM specimens prepared based on each field sample gradation using OBC calculated by empirical method are tested for Marshall properties for field acceptability. The analysis of forty-field samples concluded that the OBC calculated by empirical method can be comparable with actual consumption with a negligible average variation of 0.03554%, ascertaining the use of alternative method as an in situ model of calculating OBC for DBM.
650		0	_94621 _aCivil Engineering
700			_98058 _aDas, Sudhanshu Sekhar
700			_98059 _a Sahoo, Pradeep Kumar
773	0		_x2250-2149 _dDordrecht Springer _tJournal of the institution of engineers (India) Series A
856			_uhttps://link.springer.com/article/10.1007/s40030-018-0322-7 _yClick here
942			_2ddc _cAR