Palm Oil Fly Ash: An Alternative in Sustainable Construction

In Colombia, 320,000 tons of palm oil fly ash (CVPA by its acronym in Spanish) are generated each year, a product of the combustion of dry biomass in the boilers, which is deposited in the open due to its uselessness. As the main producer of palm oil in Latin America and fourth in the world, it has the potential to take advantage of waste in sustainable construction, preparation of coating mortars, road shaping material, precast, etc. In this research, a standard mixture with Portland cement (CP by its acronym in Spanish) was designed and different mortars were made, substituting CP in an increment of (25, 50, 75, and 100%) by CVPA. The physical, mechanical and durability properties of the hardened mortars, the influence of 2 different curing temperatures 28 °C and 65 °C and the effect of alkaline activators (sodium silicate and sodium hydroxide) on CVPA mortars exclusively were evaluated. It was found that a 25% replacement of CP by CVPA improves the properties of resistance to compression up to 15% with respect to the standard mixture, in 50% it complies with all the parameters of resistance and durability (17.5 MPa) and in a 100% replacement it reached a strength of 7.5 MPa. No positive results were found in mechanical properties with increasing curing temperature. 

Bibliographic Details

Main Authors:	Sánchez M., Beraldo E., Solano S., Jorge N., Rincón A., Orlando, Martínez V., Axel H., Castillo, Eduardo
Format:	info:eu-repo/semantics/article biblioteca
Language:	spa
Published:	Fedepalma
Subjects:	Mortar, Alkaline activator, Curing temperature, Microscopy, Abrasión, Mortero, Activador alcalino, Temperatura de curado, Microscopía,
Online Access:	https://publicaciones.fedepalma.org/index.php/palmas/article/view/13204
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