Effect of glass powder on the rheological and mechanical properties of slag-based mechanochemical activation geopolymer grout

This article discusses the effects of glass powder (GP) replacements and sodium hydroxide (NaOH) molarity on rheological, fresh, mechanical microstructure characteristics slag-based mechanochemical geopolymer (MG) grout. A conventionally activated grout an ordinary Portland cement (OPC) were also investigated for comparison. Four replacement ratios used (0%, 10%, 20% 30% by total precursor weight) to prepare at three NaOH concentrations (1.25, 2.5 3.75 molars). The experimental results showed that rheological behaviour MG grouts was considerably reduced, whereas setting time bleeding capacity value increased when slag substituted with 0%–30% GP. However, after 28 days, unconfined compressive strength (UCS) improved 2%–13% 10%–20% GP as a replacement, then dropped 4% substituted. confirmed both irrespective activation method had shorter more stable than OPC revealed UCS is enhanced 18% source materials are compared conventional considerable effect because ball milling process surface area reduced particle size