Microstructural Analysis and Strength Development of One-Part Alkali-Activated Slag/Ceramic Binders Under Different Curing Regimes

摘要: Alkali-activated binders have shown great potential in the reuse of industrial waste materials and therefore received significant attention. The use one-part or a “just-add-water” alkali-activated binder aims to avoid alkali-activator solutions which traditionally been utilized two-part systems. By using solid activator, disadvantages posed by hazardous liquid activators (such as difficulties them on-site) can be minimized. Ceramic represent considerable fraction construction demolition wastes, originate not only from building process, but also tiles industry rejected bricks. Besides these road sub-base backfill materials, they employed supplementary cementitious even raw material for binders. This paper presents strength development microstructural results obtained examining different compositions under various curing conditions (sealing, ambient, submerged water). Two ceramic wastes (with without firing) were used partial replacement (5–10% mass) ground granulated blast-furnace slag. Specimens then cured three regimes, including: (1) plastic-sealed, (2) unsealed at ambient with an average temperature 23 °C 35% RH, (3) water until test date. Mechanical testing (compressive flexural strengths) analysis (SEM/EDX, XRD, MIP, heat hydration, TGA, DTA) determine effects conditions. showed that content type, well greatly affect chemical reaction products, development, structural stability.