Rheological assessment of metakaolin‐based geopolymer composites through squeeze flow

Abstract Geopolymer (GP) composites show great potential as a replacement for ordinary Portland cement (OPC) in construction material, extrusion‐based, and additive manufacturing. The rheological properties of highly viscous reinforced systems have not yet been well studied, due to limitations the current state art rheometers viscometers, such size torque limits. In this study, basic reinforced, geopolymer with 3D printing are innovatively investigated “squeeze flow” “flow table” tests commonly used civil engineering. Squeeze‐flow rates 0.1, 1.0, 3.0 mm/s were assessed varying sand weight percentages or basalt fiber lengths compared conventional OPC mixture differentiate flow deformation resistance both materials. It is shown that result jamming increases increasing solid reinforcement percentages, but overall effect somewhat inconclusive. addition, squeeze‐flow rate exhibits an increase load required initiate at lower squeezing rates, but, upon reaching certain ratio solids liquid matrix, results become variable.