The bagasse is generated in the sugar and alcohol production process. This waste is used for cogeneration of electricity by burning it in boilers and at the end it produces sugarcane bagasse ash (SBA). Currently, those ashes are also used in cane plantations as organic fertilizer, despite the fact that it is poor in nutrients. The aim of this study was to evaluate the durability of concrete made with SBA as a replacement material for fine aggregate, through abrasion and carbonation tests. The results were compared to those obtained for a concrete without SBA. The concretes were designed to have the same workability and the same content of mortar. Mixes were made with 0%, 30% and 50% of SBA (in mass) replacing fine aggregate in three different groups. Mechanical tests were carried out with the concretes and the best concrete mixes made with SBA were submitted to the carbonation test at 60, 120 and 210 days, and the abrasion test at 28 days. The results indicated that the abrasion and carbonation of concrete produced with SBA as an aggregate replacement and slag-modified Portland cement are similar to concrete without ash addition.
Concretes; Sugarcane bagasse ash; Durability
