Mechanical Properties of High Strength Concrete Containing Coal Bottom Ash and Oil-Palm Boiler Clinker as Fine AggregatesMahmood Soofinajafi, Payam Shafigh, Farid Wajdi Akashah and Hilmi Bin MahmudMATEC Web Conf., 66 (2016) 00034DOI: https://doi.org/10.1051/matecconf/20166600034