ABSTRACT
One of the possible applications of stone siftings is using them as a fine aggregate for normal-weight concrete. The concrete mixture fluidity at all plan points was maintained within the limits of the cone slump. The given fluidity was achieved by adding a naphthalene-formaldehyde type superplasticizer. The increase of water-cement ratio of concrete causes a slight increase in the concrete mixture water demand, which is noticeable only outside the constancy of water demand rule. The concrete strength at 28 days was within 32 to 55 mega pascal that basically corresponds to the strength of concrete in the investigated water-cement ratio range. Design of concrete compositions with siftings can be carried out according to a well-known technique. Experimental investigation has demonstrated the possibility of using granite siftings in the normal-weight concrete instead of fine aggregate, providing the optimal grain composition and allowing production of mixtures without stratification signs.
