Effect of Portland Cement on Mechanical and Durability Properties of Geopolymer Concrete at Ambient Temperature

Environmental concerns have prompted researchers to focus on the development of alternative building materials like geopolymer concrete. However, their implementation requires curing beyond 60°C, which limits application sites. This study aims design a concrete at room temperature (30 ± 5°C) in laboratory Burkina Faso using metakaolin-based binder activated by an alkaline solution NaOH and natural aggregates. Portland cement type CEM I 42.5 was used mass substitution (0 25%) metakaolin promote ambient temperature. The samples were cured for 7 28 days characterized physical, mechanical, durability properties. results showed that incorporation 0 20% significantly improved compressive strength from 9.9 30.5 MPa tensile 1.2 2.2 MPa. has various effects It reduces porosity accessible water 15 13% decreases resistance acid attack increasing loss 2 7%. confirms common types C20/25 or C25/30 can be casted sites once is confirmed. Doi: 10.28991/CEJ-2023-09-07-04 Full Text: PDF