Coal combustion fly ash is a useful additive in concrete due to its pozzolanic property — i.e. its ability to react with calcium in concrete mixes to contribute to the formation of the cementitious matrix [1]. Through this mechanism, fly ash serves as a partial replacement for Portland cement, yielding cost savings as well as a variety of concrete property enhancements. A practical problem with...

In order to explain the good state of conservation and good mechanical characteristics of the lime-stabilized earth of the sugar refinery near Chichaoua (Morocco, XVIth A.C.) XRD, SEM-EDX, TG-DSC, FT-IR analyses were performed on collected samples. Moreover laboratory earth samples were prepared with selected clay minerals (presence of attapulgite) and lime, involving a reverse engineering proc...

In the present study, samples of excavated waste clays were thermally activated at 550 °C and 650 °C, these with low kaolinite content presence dickite have a limited industrial exploitation but are widely availability in developing countries potential to use as pozzolanic material. The effects on calcium hydroxide fixation compressive strength evaluated lime pastes mortars blended calcined cla...

Portland Pozzolana Cement (PPC) is prepared by adding Pozzolanic materials to ordinary Cement. The artificial pozzolana used in the manufacturing of PPC such as fly ash, silica fume, rice husk, blast furnace slag, are actually industrial waste, which produced large amounts. These when concrete can reduce consumption natural resources, diminish effect pollutants environment and it economical rel...