Compressive strength of harden cement paste modified with white soot metakaolin and different superplasticizers ranged from 69 to 182% in comparison with non modified specimen. The elastic modulus ranged from 89 to 137% in comparison with non modified specimenand the measure of creep from 36 to 542%.
Keywords: portland cement, white soon, metakaolin, superplasticizers, compressive strength, E-modulus, creep coefficient