Compressive strength and life cycle analysis of green patch repair mortar made by Portland Pozzolan Cement

¹ Department of Civil Engineering, Universitas Muhammadiyah Yogyakarta, Indonesia
² Department of Civil Engineering, Vocational College, Universitas Gadjah Mada, Indonesia

^* Corresponding author: pinta.astuti@ft.umy.ac.id

Abstract

Portland pozzolan cement (PPC) is increasingly favored as an eco-friendly binder in green repair mortars due to its sustainability and performance. This research examines PPC in repair mortars, focusing on compressive strength, environmental benefits, and overall effectiveness. PPC, a blend of Portland cement and pozzolanic minerals, significantly reduces carbon emissions compared to conventional Portland cement. The pozzolanic reaction enhances the mortar's long-term durability, making it suitable for structural repairs. Experiments evaluated the compressive strength of PPC-based repair mortars. Various samples with different PPC contents were tested at different curing stages. Results showed that PPC mortars achieved compressive strengths equal to or surpassing traditional mortars. The addition of pozzolanic materials improved microstructural characteristics, boosting mechanical performance. A life cycle analysis (LCA) assessed PPC's environmental impact from raw material extraction to disposal. The LCA revealed notable reductions in carbon footprint, energy use, and emissions throughout PPC's lifecycle. The production phase benefits from reduced clinker use, and the operational phase sees enhanced durability, decreasing maintenance needs. This study demonstrates PPC's efficacy as a sustainable binder for repair mortars, offering both environmental and structural benefits. PPC use in repairs lowers environmental impact and ensures the longevity of structures, supporting its adoption in sustainable construction and promoting greener building materials.