Investigation of the application of the natural and with lead ions contaminated zeolite as an addition in portland cement

Abstract

In presented paper results of the removal of lead ions from water solutions by the natural zeolite (clinoptilllite) and application of such contaminated zeolite materials as a supplement for standard additions portland cement are showed. In this investigations, the natural zeolite (clinoptilollite) with particle size 100% 43 μm was used. The experiments of lead ions adsorption showed that the maximum adsorption capacity of the natural zeolite was 66 mg Pb 2+ /g. After adsorption experiments the saturated zeolite with lead ions was used as a supplement to portland cement. Investigations of the mechanical properties of the cement with the addition, natural zeolite and zeolite saturated with lead ions showed that this material can be used as a supplement for portland cement up to 30%.