Evaluation of strength and durability performance of self-compactingmortar incorporation of nano-Al2O3and fly ash

This article presents a comprehensive evaluation of the performance of selfcompacting mortar (SCM) incorporating Al2O3 nanoparticles (NA) and flyash(FA). In this study the construction cost of SCMs was compared withnormal concrete cost. Compressive and flexural strength of SCMs was alsoinvestigated to evaluate mechanical properties. The durability performancewas assessed by means of water absorption, electrical resistivity and rapidchloride permeability tests. Also the SEM photos of samples were presentedto indicate the microstructure of specimens. The results showed that althoughthe SCMs containing NA increased content show good durability andmechanical performance (that in many tests except in water absorption testthe results met and exceeded that of the control specimen),the improvementin results after addition of FA in SCMs is undeniable. The results also showedthat specimen with 30% fly ash and 3% nano-Al2O3 (30FA3NA) forPortland cement replacement indicated a high degree of satisfaction for mostparameters such as mechanical strength and durability properties

Keywords:

Self-compacting mortar , Al durability. 2O32O3 is responsible fora severe nanoparticles , Fly Ash , mechanical properties