Research of Pore Structure of Phosphoaluminate Cement Paste Using Nitrogen Adsorption Isotherm
Phosphoaluminate cement (PAC) sets quickly and develops high early strength. As a novel cementitious material, its hydration mechanism and microstructure are more complex than ordinary cement. Based on nitrogen adsorption isotherm method, investigated characteristic of adsorption isotherm of PAC paste, adsorption loop and pore distribution at different hydration period with various W/C ratio, results show that adsorption and desorption isotherm are tight relate to pore structure and pore distribution. In addition, the study analyzed the scope of application of nitrogen adsorption isotherm method on investigating pore structure of cement paste.
Xie Yi and Li Mi
M. Zhang et al., "Research of Pore Structure of Phosphoaluminate Cement Paste Using Nitrogen Adsorption Isotherm", Advanced Materials Research, Vols. 129-131, pp. 1376-1380, 2010