Development of High-Strength Geopolymer Concrete Incorporating High-Volume Copper Slag and Micro Silica

نویسندگان

چکیده

The present work investigates the mechanical and chemical characteristics durability of high-strength geopolymer concrete (HSGPC) developed using high-volume copper slag micro silica. objective study was to explore feasibility deploying as a replacement for river sand in fabrication concrete. In total, 11 different trials were cast by varying up 100% potential alternative sand. mixture alkaline activators preparation (GPC), such sodium silicate (Na2SiO3) hydroxide (12 M NaOH), used ratio 2.5:1. optimum mix selected from dosages based on HSGPC, strength workability. For optimized mix, silica added 5% volume binder (i.e., 1%, 2%, 3%, 4% 5%) improve particle packing density HSGPC which turn further enhances properties. Two curing methods, including (a) ambient (b) steam at 80 °C, deployed achieving polymerization reaction formation Na-Al-Si-H gel). Experimental outcomes reveal maximum compressive 79.0 MPa when 2% GPC mix. addition tests, quality assessed ultrasonic pulse velocity (UPV) water-absorption sorptivity tests microstructural analyses.

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ژورنال

عنوان ژورنال: Sustainability

سال: 2022

ISSN: ['2071-1050']

DOI: https://doi.org/10.3390/su14137601