ԺԱՄԱՆԱԿԱԿԻՑ ԲԱՐԵՓՈԽԻՉ ՈՐՈՇ ՆՅՈՒԹԵՐԻ ԱԶԴԵՑՈՒԹՅՈՒՆԸ ՄԱՆՐԱՀԱՏԻԿ ԲԵՏՈՆՆԵՐԻ ՀԱՏԿՈՒԹՅՈՒՆՆԵՐԻ ՎՐԱ
ՇԻՆԱՐԱՐԱԿԱՆ ՆՅՈՒԹԵՐ
Keywords:
fine concrete, modifier, microsilca, super plasticizer, antifoam agent, polypropylene fiber, compression strength
Abstract
The effect of contemporary modifiers such as super plasticizer and antifoam agent and dispersed armor polypropylene-fiber on the physico-mechanical properties of fine concretes are studied. The optimal combination of modifiers gives us an opportunity to control the rheological properties of concrete mix. In the result of the initial experiments the optimal length of the polypropylene-fiber were determined which was the basis of further investigation. The optimal quantities of complex modifiers were determined. Formulas of fine concretes of 53,3…..69,1 MPa compression strength were worked out.
