Assessing the efficiency level of ground basalt stone and fine sand in compressive strength of portland cement

Compressive strength of a portland cement were effected by natural mineral admixtures (PGKTN) such as basalt stone and fine sand. In general, a higher content of natural mineral admixture, a lower compressive strength of blended portland cement. Influence level depended on such as the kind and content, the fineness of natural mineral admiixture. In this paper, study results on the efficiency level of ground basalt stone and fine sand on the compressive strength in mortar PCB was introduced. Investigation results show that the higher content of ground basalt stone and fine sand in blended portland cements, the lower compressive stregth were investigated. Efficiency level of natural mineral admixture in the compressve strength of blended portland cement is different for mortar and paste cement. Study data show efficiency levels of the chemical and physical effect by the active and inert components in these admixtures on compressve strength of blended portland cement. It confirmed that the efficiency level of these natural mineral admixtures in the compressve strength ís increased with the increasing of the content and grinding of a basalt stone and fine sand.