?url_ver=Z39.88-2004&rft_id=10.1109%2FBEIAC.2013.6560137&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=A.E.A.&rft.au=Elshekh%2C+A.E.A.&rft.aulast=Elshekh&rft.date=2013&rft.isbn=9781467359689&rft.title=Mechanical+properties+of+high+strength+concrete+using+fly+ash&rft.genre=proceeding