This paper present the results of mechanical properties hybrid reinforced concrete made by adding polypropylene and steel fibers into mixture. For testing purposes were used with hooked ends monofilament fibers. The total 5 batches made: addition fibers, their combination in amount 0,5 % volume. test show that concretes 0.4% 0.1% have better performance compared to other concretes.

The main issue in working with fresh concrete is the workability during filling of formwork. One of the problems found in workability is occurence of segregation depending on w/c ratio. Segregation is strongly related to w/c ratio. The fresh concrete is usually considered as a non-Newtonian fluid since it is a mixture of aggregate, cement and water. The flow behaviour of the fresh concrete, a c...

While high volume fly ash (HVFA) concretes can be designed and produced to meet 28-d strength requirements and often even exceed the durability performance of conventional concretes, a persistent problem is the potentially long delay in setting time that produces concurrently long delays in finishing the concrete in the field. Previous isothermal calorimetry studies on two different powder addi...

In order to achieve a fair description of radon transport through concrete certain information is needed on the concrete structure, porosity and permeability, on processes causing the transport of radon, on radon’s interaction with environment, factors favouring the generation of radon, etc. The concrete characteristics (that depend on its composition and especially on the W/C ratio) which infl...

Noise is continuously treated as an annoyance to humans and indeed commotion contamination shows up within the environment, causing inconvenience. This likewise interesting engineering tactic that inclines develop this noise proliferation. The basics of sound-retaining proliferation, sound-absorbing properties, its variables were rarely considered by previous researchers. Thus, acoustic perform...