Abstract
AbstractThree scaled concrete slabs were cast and tested till failure under drop-weight impacts and static loads, sequentially. Two of the three slabs contained 0.5% steel fiber while the third slab was constructed by using only steel bar reinforcement (i.e., ordinary reinforced concrete). The obtained data from the testing program were used to distinguish between the performance of traditional reinforced concrete and steel fiber concrete slabs under impacting and static weights and to establish a data base for the upcoming studies pertaining to this research area. The test results and observations showed that the extension of steel fiber to the ingredients of concrete was efficient in decreasing crack widths and softening local damage under dynamic and static loads. On the other hand, reinforcement was more effective in increasing slab capacity than steel stiffeners, consequently different failure modes were observed.
Highlights
How fibrous concrete or reinforced concrete will behave under static loading after applying impact loads and what are the differences between them and reinforced concrete slabs under impact and subsequent static loadsThis work is licensed under the Creative112 Al Zahid Ali Adnan and Al Kulabi Ahmed Kamil on their behaviour under dynamic and static weights; slab dimensions, slab thickness, height of dropping weight, number of impacts, and amount of static weight except steel fiber, steel stiffeners, and reinforcement existence were the various parameters between the two sets of slabs
Discussions are made depending on the observations and test results. This includes discussing the results of testing two concrete slabs with steel fiber and steel stiffener and testing one concrete slab with zero steel fiber content and with steel bar reinforcement. As it is noticed from the previous sections, the samples responded differently to the applied loads; various outputs were observed regarding: capacity of impact loading, deflection, capacity of static loading, failure mode, and number and width of cracks
The other remarkable thing is that steel stiffeners during dynamic loading did not take off from the slabs, but at the time of static loading, they debonded
Summary
How fibrous concrete or reinforced concrete will behave under static loading after applying impact loads and what are the differences between them and reinforced concrete slabs under impact and subsequent static loadsThis work is licensed under the Creative112 Al Zahid Ali Adnan and Al Kulabi Ahmed Kamil on their behaviour under dynamic and static weights; slab dimensions, slab thickness, height of dropping weight, number of impacts, and amount of static weight except steel fiber, steel stiffeners, and reinforcement existence were the various parameters between the two sets of slabs. How fibrous concrete or reinforced concrete will behave under static loading after applying impact loads and what are the differences between them and reinforced concrete slabs under impact and subsequent static loads. This work is licensed under the Creative. 112 Al Zahid Ali Adnan and Al Kulabi Ahmed Kamil on their behaviour under dynamic and static weights; slab dimensions, slab thickness, height of dropping weight, number of impacts, and amount of static weight except steel fiber, steel stiffeners, and reinforcement existence were the various parameters between the two sets of slabs. Needless to say that the reason for matching the influencing parameters is to figure out the key role all steel fiber and reinforcement in resisting dropping-weigh impacts and static weights
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