Abstract :
This paper presents a study of the properties
and behaviour of cement mortar with natural pozzolana
from Algeria. The effect of level of addition of natural
pozzolana (0, 10, 20, 30, and 40%) on the mechanical
properties of mortars at different ages as well as the effect
of curing environment and the period of initial curing on
the mechanical properties were investigated. The performance
of natural pozzolana cement exposed to three
aggressive solutions (acids, sulphate, and chloride) is also
analysed. The results indicate that the strength of pozzolanic
cement is lower than that of plain Portland cement at
early ages, but can reach the same order of strength at
longer curing periods. The enhancement of the resistance to
acid and sulphate attack as well as to chloride ion penetration
of natural pozzolanic cement is also demonstrated.
