000			02869cam a2200337 a 4500
003			EG-GiCUC
005			20250223032040.0
008			180909s2018 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.13.05.M.Sc.2018.As.S
100	0		_aAshraf Gamal Ahmed Ahmed Nayel
245	1	0	_aStructural performance of concrete blast wall barriers in resisting surface explosions / _cAshraf Gamal Ahmed Ahmed Nayel ; Supervised Adel Y. Akl , Ehab H. Ali
246	1	5	_aالتصرف الإنشائي للحواجز الخرسان{u٠٦أأ}ة في مقاومة التفج{u٠٦أأ}رات السطح{u٠٦أأ}ة
260			_aCairo : _bAshraf Gamal Ahmed Ahmed Nayel , _c2018
300			_a282 P. : _bcharts , facsimiles ; _c30cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering
520			_aAccidental explosions have been witnessed and recorded with increasing rate around the globe. The effect of those explosions on civil structures and infrastructures is a point of interest for engineers and researchers to safeguard and protect lives and other assets. From here comes the importance of understanding different kinds of explosives that may threaten the target of interest. Blast wall barriers are one of the physical protective measures that are used as sacrificial elements to reduce the potential of risk caused by explosion on the structures behind. They also work as anti-ram element by obstructing vehicles to impact the structure. This research focuses on and deals with the behavior of concrete blast wall barriers that may be either rested on ground or anchored (fixed) to the ground by several means. Three different walls with three different geometrical surfaces exposed to the blast loading are studied under the effect of different levels of blast loading. The base of wall can be considered fully fixed in ground by forming pockets and laying the walls inside. In addition, the concave curved concrete wall is investigated under small charges in order to investigate the stability of wall in case it was rested on ground. A new method to clamp the base of the concave curved wall to ground to reduce the damaging effect of blast is proposed and evaluated in this research. All Charges are considered placed on ground surface producing surface blast wave. The three walls represent three different surfaces (i.e. vertical straight surface, concave surface and convex surface)
530			_aIssued also as CD
653		4	_aBlast
653		4	_aDetonations
653		4	_aTNT
700	0		_aAdel Y. Akl , _eSupervisor
700	0		_aEhab H. Ali , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aShimaa _eCataloger
942			_2ddc _cTH
999			_c67361 _d67361