Wuna, M.A, Nmadu Helen Gogo, Ogunbode, E.B, Mohoro, I.S.2025-04-242021-05-03Wuna, M.A., Nmadu H. G., Ogunbode, E.B & Mohoro, I.S. (2021). Evaluation of Shear Bond Strength of Geopolymer Mortar Containing Cassava Peel Ash and Metakaolin. proceedings of school of environmental Technology (SETIC 2020) International conference, 3-5 May 2021, Minna, Niger state, pp CI0I-C108.978-978-54580-8-4http://repository.futminna.edu.ng:4000/handle/123456789/913The cement industry has been recorded to have contributed immensely to the high global carbon dioxide emissions the word is contesting with today. This has made researchers to looked for other sustainable substitutes. One of the possibility substitutes is geopolymer mortar, which has no cement content in it. Geopolymer mortar can be produced using agricultural and industrial wastes like cassava peel ash (CPA), rice husk ash (RHA), metakaolin (MK), fly ash (FA), and many more. Geopolymer have been proven recently to be the way of converting agricultural, thermal and industrial waste into construction repair materials. When comparing Ordinary Portland Cement (OPC) mortar with geopolymer mortar, geopolymer mortar is considered as a highly eco-friendly product. This paper evaluates the compressive and shear bond strength properties of geopolymer mortar manufactured using Cassava Peel Ash (CPA) and Metakaolin (MK). Sodium silicate (Na2SiO3) and 9 molar concentration of sodium hydroxide (NaOH) solution were used as alkaline activator. The mass ratios of sodium silicate to sodium hydroxide (NS: NH) and the binder to fine aggregate (B: A) were fixed to 2.5 and 0.4 respectively. The compressive strength of the synthesized GPM were determined at 3, 7 and 28-days. The compressive strength at 28 days curing was 46.5 N/mm2. Results revealed that 50% replacement of MK with CPA made with 9M concentration of NaoH enhanced the compressive strength of the mortar while 100% CPA content in the mortar demonstrated the highest shear bond strength value. The grooved surface improved the bonding strength. The bond strength results have proven that the surface texture must be considered in determining the bond strength. It is concluded that geopolymer mortar incorporating 100 percent metakaolin could be used in the construction industry with the almost negligible amount of environmental problems.enGeopolymerBinderMetakaolinCassava Peel Ashcompressive strengthbond strength.Article