Durability against carbonation of concrete formulated with partial replacement of cement with marble powder

Abstract

The first objective of this study is the use of marble waste powder as a partial replacement for cement (CEM I 42.5) in concrete. Furthermore, the phenomenon of carbonation significantly influences the durability of reinforced concrete structures, in this context, the second objective of this work is the study of the effect of accelerated carbonation on the durability of concretes formulated with cement. Containing marble powder with different percentages. To achieve this objective, four concrete mixes containing 0%, 10%, 15% and 30% marble powder as a cement replacement by weight were prepared. These concrete mixes were subjected to accelerated carbonation to study their durability against this phenomenon. The series of tests is carried out to study the effect of replacing 10%, 20% and 30% of the cement with marble powder on the depth of carbonation and the compressive strength and compare it with traditional concrete. The result of the present study indicates that the depth of carbonation increases with the increase in the rate of replacement of the cement with marble powder (10% to 30%) and that the resistance to compression decreases slightly with the increase in the replacement. the compressive strength of the concrete remains within the acceptable range recommended by the regulations used in Algeria.