Bond Characterization in Cementitious Material Binders Using Fourier-Transform Infrared Spectroscopy

Fourier-transform infrared (FTIR) spectroscopy is a fast and simple technique for functional group identification. This work provides review insight into the application interpretation of FTIR cementitious binders that comprise ordinary Portland cement, alkaline-activated binders, geopolymers, material characterization civil engineering applications. can be used to identify different compounds moiety bond vibrations in inorganic molecules such as Si-O, -OH, H-O-H (water), C-O (carbonate or carbonation), aluminosilicate (Si-O-T, where T Al Si), S-O (sulfate gypsum) found hydrated alkaline geopolymers. The prominent bands include those representing carbonation (CO32− 1390–1475 cm−1), calcium carbonate (871, 1792–2516 hydroxylation water (1607, 3400–3650 strength skeletal framework compositions Al-Si substitutions, silicate organization (C-A-S-H, N-A-S-H, C-S-H (950–1055 sulfate (600–680, 1080–1100 cm−1). Some factors could affect spectra elemental displacement due changes molar mass, activated temperature, pH, activator concentration, w/b ratio, Ca/Si Si/Al silica modulus (SiO2/Na2O) activators binder synthesis. method destructive non-destructive testing on paste sample by using transmission attenuated total reflectance methods, respectively.