Potential Use of Sugarcane Bagasse Ash in Cementitious Mortars for 3D Printing

Advancement in Sustainable 3D Concrete Printing: A Review on Materials, Challenges, and Current Progress in Australia

“…Rice husk ash (RHA): RHA can be classified as Class F pozzolan according to ASTM C618 [50] because the combined amount of SiO 2 , Al 2 O 3 , and Fe 2 O 3 is more than 70% [38,39,51]. Pozzolanic activity between RHA and cementitious binders occurs when a calcium hydroxide reaches sufficient humidity to generate the calcium silicate hydrate C-S-H that promotes concrete strength growth [39,[52][53][54]. The pozzolan reduces portlandite content to increase the C-S-H gel, improving the resistance [55] and durability of concrete [56][57][58].…”

“…In countries where the sugarcane industry produces abundant sources of bagasse waste, SCBA has the potential to be used as cement replacement in 3DCP. Higher water content is required in SCBAbased 3DCP mortar to attain the desirable fluidity and slump [54]. SCBA indicated excellent fresh properties when mixed with cement mortar [53].…”

“…However, the strength properties were reduced when the replacement exceeded 30% of OPC [53]. When evaluating these properties, sugarcane bagasse ash (SCBA) will be another potential successful replacement, which needs further investigation [54].…”