Some properties of ultra-high strength concrete

Abstract

Značajno mesto u primeni novih materijala u građevinarstvu zauzima upotreba betona ultra visokih čvrstoća. Struktura, svojstva i tehnologija izrade ove vrsta betona se intenzivno proučava poslednjih petnaest godina. U ovom radu je prikazana mogućnost dobijanja betona ultra visokih čvrstoća na osnovu eksperimentalnih istraživanja primenom komponentnih materijala dostupnih u Srbiji. Spravljene su tri serije uzoraka sa različitim vrstama cemenata. Korišćena su čelična vlakna dužine 8mm i poprečnog preseka 0.175mm. Prikazana su fizičko-mehanička svojstva betona ultra visokih čvrstoća i analizirana je mikrostruktura ovog kompozita.Modern civil engineering is characterized with increased application of Ultra-high strength concrete (UHSC). Structure, properties and manufacturing technologies of UHSC are intensively analyzed in the last fifteen years. Possibilities of getting UHSC designed with the materials that are available in Serbian market, were tested in the experimental work; they are shown in this paper. Three series of samples were made with different types of cement. Steel fibers were used: length 8 mm, diameter 0.175 mm. Physical-mechanical properties of UHSC are presented and microstructure of concrete was observed, as well

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