Microscale investigation of fiber-matrix interface properties of strain-hardening geopolymer composite

This study reports the microscale investigation of a short fiber-reinforced fly ash-based strain-hardening geopolymer composite (SHGC), which possesses high tensile strength (4.7 MPa) and very high tensile strain capacity (4.3%). The investigation involved determination of the quantitative influences of the type of activator, water to geopolymer solids ratio and fiber surface oil coating on the microscale fiber-matrix interface properties using...