PEMAKAIAN ABU AMPAS TEBU DENGAN VARIASI SUHU SEBAGAI SUBSTITUSI PARSIAL SEMEN DALAM CAMPURAN BETON

Bagasse is natural resource that has not been maximally used. The bagasse cinders, waste of burning was taken from Kebon Agung sugar mill, Malang, contains 38,09% amount of silica. The research toward bagasse cinder is done by reburning it from temperature 400ºC, 500ºC, 600ºC, 700ºC and 800ºC with silica amount 49,60%, 52,59%, 53,92%, 54,46% and 54,96%. Based on the research result was obtained the best press power in 28 days old is bagasse cinder which is burnt in 400ºC of temperature by 5% precentage is 24,616 Mpa. The more high burning temperature, the lower of streng that is produced. The maximum water absorption value is in a mixed-bagasse cinder that is burnt in 800ºC of temperature is 1,061%. The proportion of correlation between streng and water disorption toward mixed bagasse cinder concrete is reverse. It is because of compound establisthhment of Ca(OH)2 with SiO2 is not happened yet perfectly, portlandid fase is still exist. Consequently, the expected cinder did not exist as changer role for repairing cement feature, on the contrary, it had filler role the same as sand