Ivanka NetingerSveučilište Josipa Jurja Strossmayera u Osijeku, Građevinski fakultet Osijek, docent Sažetak: U radu je dan pregled svojstava poroznog betona te prikazane prednosti njegove uporabe u kolničkim konstrukcijama. Pripremljene su dvije mješavine poroznog betona i mješavina referentnog betona, uobičajeno korištena za izradu betonskih kolničkih konstrukcija, te uspoređena njihova svojstva: konzistencija, tlačna i vlačna čvrstoća, poroznost i gustoća, dinamički modul elastičnosti te propusnost. Procijenjena je i mogućnost njihove primjene u betonskim kolničkim konstrukcijama, sukladno uvjetima propisanim u Općim tehničkim uvjetima za radove na cestama. Mješavina s malim udjelom cementa i dodatkom superplastifikatora nije udovoljila najmanje zahtijevanoj poroznosti i propusnosti za porozne betone. Nasuprot tome, mješavina s većim udjelom cementa i bez dodatka superplastifikatora ocijenjena je kao porozna, no ne posjeduje tlačnu čvrstoću potrebnu za kolničke konstrukcije. Stoga, potrebno je daljnja istraživanja usmjeriti ka poboljšanju tlačne čvrstoće mješavina.Ključne riječi: porozni beton, betonski kolnici, tlačna/vlačna čvrstoća, poroznost, gustoća, dinamički modul elastičnosti, propusnost APPLICATION OF PERVIOUS CONCRETE IN ROAD CONSTRUCTIONAbstract: This paper presents an overview of the properties of porous concrete, and the advantages of its use in pavement structures. Two mixtures of pervious concrete and a reference concrete mixture commonly used for concrete pavements are prepared and their properties compared: consistency, compressive and flexural strength, porosity and density, dynamic modulus of elasticity, as well as permeability. The possibility of their application in concrete pavements is estimated in accordance with the requirements given in General technical conditions for roadworks. Mixture with a small amount of cement and addition of superplasticizer did not meet minimum porosity and permeability required for pervious concrete. In contrast, a mixture with a higher amount of cement and without the addition of superplasticizer was evaluated as pervious one, but does not have a compressive strength required for road construction. Therefore, it is necessary to direct further research towards improving the compressive strength of mixtures of pervious concrete.
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