Expected to impact absorption energy using modified regression theory

M Barandan, M R Jafarian

Abstract


In this study new mathematical models were proposed and developed by using a regression equation for
the  prediction  of  impact  energy  absorption  of  hybrid  ferrocement  slabs.  Slabs  were  made  up  of  self-compacting
concrete  (SCC)  in  order  to  minimize  the  external  vibration  work.  Slabs  of  size  300    X  300  mm  with  varying
parameters  such  as  depth  of  slab  (25  &  30  mm),  number  of  layers  of  weld    mesh  (2  and  3  layers  bundled),  and  
wrapping with  Glass Fiber Reinforced Polymer sheets  (GFRP) (1 and 2 layers) along with a specified proportion (0
and  0.30%)  of  polypropylene  fibers  were  cast.  Impact  load  was  applied  by  means  of  a  hammer  of  weight  3.5  kg
(34.335  N)  and  the  initial  and  ultimate  energy  absorptions  were  evaluated.  The  variables  used  in  the  prediction
models were the varying parameters such as number of layers of GFRP sheet, area of weld mesh and height of drop.
According  to  the  analysis,  the  models  provide  good  estimation  of  impact  energy  absorption  and  yielded  good
correlations with the data used in this study.

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