粉煤灰-矿渣粉对环氧砂浆性能的影响OA

To reduce the carbon footprint generated during cement production,the use of supplementary cementitious materials(SCMs)in the construction industry is increasing globally.This study investigates the synergistic effect of two SCMs—granulated blast furnace slag powder and fly ash—in epoxy mortar.Test specimens were prepared by substituting cement with varying proportions of granulated blast furnace slag powder and fly ash,and their flowability and compressive strength were examined.The microstructure of the specimens was analysed using scanning electron microscopy(SEM)and energy dispersive spectroscopy(EDS).Results indicated that the combined use of slag powder and fly ash significantly enhanced the pozzolanic reaction and filler effect within the epoxy mortar,yielding higher compressive strength.Microstructural investigations revealed improved particle packing,refined pore structure,and increased formation of calcium silicate hydrates.Consequently,the combined use of slag powder and fly ash optimises the performance of epoxy mortar,presenting a sustainable and viable solution for reducing cement requirements.