The Impact of Different Grades of Crushed Aggregate on the Properties of Porous Concrete : Master's Thesis

Porozni beton ima značajnu ulogu u tehnologiji građenja. Povećanje korištenja ovakvih specijalnih betona značajno bi doprinijelo unaprjeđenju održive gradnje, ekologiji te održavanju voda čišćim. Cilj ovog istraživanja je ispitati svojstva poroznog betona od drobljenog agregata. Napravljeno je osam mješavina poroznog betona na kojima su ispitana i analizirana sljedeća svojstva: konzistencija, poroznost, propusnost, tlačna čvrstoće te vlačna čvrstoća cijepanjem. Porozni betoni imaju malu čvrstoću. Razlog tome je što takvi betoni imaju veliku propusnost jer im je većina volumena ispunjena krupnim agregatom. U ovom istraživanju nastojao se postići optimalni sadržaj pora kako bi se dobila zadovoljavajuća čvrstoća i propusnost.Porous concrete has a significant role in building technology. Increased use of these types of concrete could significantly contribute to the improvement of sustainable construction, but also to the ecology and maintenance of clean water. The aim of this study is to examine the properties of porous concrete from the crushed aggregate. Eight mixtures of porous concrete were made. After that they were tested and analyzed by the following characteristics: consistency, porosity, permeability, compressive strength and tensile strength by splitting. Porous concrete has a small strength. The reason for this lies in the fact that these types of concrete have a large permeability because most of their volume is filled with coarse aggregate. In this study an attempt was made in order to achieve the optimal content of voids so that sufficient strength and permeability could be obtained