ASTM Type I ordinary Portland cement was used in all concrete mixtures. Bagasse
ash from a sugar factory in central Thailand was ground using a ball mill until
the particles retained on a No. 325 sieve (with openings of 45 lm) were less than
5wt% and was assigned as BA. The physical properties and chemical composition
of the cement and ground bagasse ash are listed in Tables 1 and 2, respectively.