Some Later Ages Structural Characteristics of Concrete Containing Empty Palm Oil Fruit Brunch Ash (EPO-FBA) as Partial Replacement of Ordinary Portland Cement

This  paper  presents  the  results  of  the  investigation  conducted  to  assess  the  latter  day  strengths  of  concrete  in  which  the  cement constituent  of  the  mix  has  been  partially  replaced  by  empty  palm  oil  fruit  brunch  (EPO-FBA).  The  structural  parameters  investigated  were: workability,  density  and  compressive strength. Some physical  properties  and chemical  analysis  were conducted.  Slump  test  was  used to  assess the  workability,  while  150  x  150  x  150mm  concrete  cube  specimens  were  used  to  assess  the  density  and  compressive  strength  characteristics. Replacement  of  Portland cement  with EPO-FBA  were carried out up to 20% by  weight at interval  of 5%. The results  showed that  (i) the concrete specimens  with  EPO-FBA  became  less  workable  with  increase  in  the  cement  replacement  with  EPO-FBA,  (ii)  normal  density  concrete  was obtained  with  densities  in  the  range  2240  –  2480  kg/m3  when  the  cement  constituent  of  the  mix  was  partially  replaced  with  EPO-EBA  up  to 20%,  and  (iii)  the  compressive  strength  developed  by  the  concrete  specimens  at  5%  cement  replacement  with  EPO-FBA  was  better  than  the control samples.