38 KB384 KB28 KB200020242012Boga, Ahmet RaifÖztürk, MuratTopçu, Ilker Bekirletnik:46številka:5str. 511-518ISSN:1580-2949COBISSID:944810URN:URN:NBN:SI:doc-ABWOZYYXenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijebetonconcretecorrosionfly ashkorozijaleteči pepelmechanical propertiesmehanske lastnostiEffect of fly-ash amount and cement type on the corrosion performance of the steel embedded in concrete| Učinek količine letečega pepela in vrste cementa na korozijo jekla v betonu|In this study the corrosion performance of the steel embedded in the concrete produced by using three different types of cement (CEM II/B-M (P-L) 32.5 R, CEM I 42.5 R and CEM I 52.5 R) was investigated. 300 kg/msup3 and 375 kg/msup3 dosages of the cement with (0, 10 and 20) % of fly-ash (FA) replacements of cement were used to produce the concretes. These concretes were cured for 28 d and 180 d. The mechanical properties of the concretes were determined and the corrosion performances of the reinforced-concrete specimens were determined using the impressed voltage test. After the impressed voltage test weight losses occurred because of the corrosion that was determined. The results of this study show that using composite cement and an FA replacement of the cement are useful in combating corrosionV tej študiji je bilo preiskovano korozijsko vedenje jekla, vgrajenega v beton, izdelan iz treh vrst cementa (CEM II/B-M (P-L) 32,5 R, CEM I 42,5 R in CEM I 52,5 R). Odmerki 300 kg/mna3 in 375 kg/mna3 cementa z (0, 10 in 20) % letečega pepela (FA) kot nadomestila za cement, so bili uporabljeni za izdelavo betona. Beton je bil preskušen po 28 d in po 180 d. Določene so bile mehanske lastnosti betona. Korozijske lastnosti armiranega betona so bile določene s pospešenim korozijskim napetostnim preizkusom. Pri pospešenem napetostnem korozijskem preizkusu se je zaradi korozije pojavilo zmanjšanje mase. Rezultati te študije kažejo, da je za zmanjšanje korozije ugodna uporaba kompozita cementa z letečim pepelom, ki nadomesti cementTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije