Influence of mineral additives to cement properties according on the JUS EN 197-1

Najveći deo portland cementa koji se proizvodi u Srbiji su mešani cementi koji se proizvode saportland cementnim klinkerom kome se dodaju različite količine mineralnih dodataka. U cementnoj industriji Srbije, kao mineralni dodaci, najširu primenu su našli: granulisana zgura visoke peći, prirodni i industrijski pucolani i krečnjak Najveći broj mineralnih dodataka su nusproizvodi, pa se prednosti pri proizvodnji mešanih cemenata ogledaju u nižoj ceni finalnog proizvoda, uštedama u energiji, smanjenju emisije gasova, smanjenju količina čvrstog otpada za odlaganje. U cilju integracije cementne industrije u evropske trendove proizvođači cementa proizvode cemente u skladu sa evropskim standardima JUS EN 197-1. Prethodnim istraživanjima je utvrđeno da mineralni dodaci, korišćeni za ispitivanja u ovom radu, zadovoljavaju uslove kvaliteta propisane standardom JUS EN197-1. U radu su dati rezultati ispitivanja fizičko-mehaničkih karakteristika mešanih portland cementa pripremljenih sa mineralnim dodacima: granulisanom zgurom visoke peći, krečnjakom i industrijskim pucolanom.For the most part of portland cements produced in Serbia belong to the group of mixed cements that are produced in processing of the portland cement clinker with addition of different amounts of mineral additives. The mineral additives with the widest application in the cement industry of Serbia are granulated slag of blast furnace, natural and industrial pozzolana and limestone. Numerous of mineral additives are by-products and, therefore, the advantages of mixed cement production are lower price of final product, saving of energy, reduction of gas emission, and reduction of amount of disposed solid waste. With the aim of integration domestic cement industry into the European trends, cement producers manufacture the cement in accordance with the European standard JUS EN 197-1. On the basis of the previous investigations, it could be concluded that mineral additives used in this research satisfy quality requirements according to the standard regulation of JUS EN 197-1. Test results of phisico-mechanical characterization of portland cement prepared with the mineral additives (granulated slag of blast furnace, limestone and industrial pozzolana) are shown in this paper