In order to prepare cement concrete with high mechanical properties and durability, nano-stainless steel powder reactive (RPC) was manufactured. The dosage of ranged from 0% 1.2% by the total volume RPC. this study, compressive flexural strengths RPC were determined, dry shrinkage rate tested electrical resistance alternating current (AC) impedance spectrum measured; moreover, corresponding str...

In this paper, the effect of super plasticizer amount, water/cement ratio, the cement, silica fume and steel micro fiber content is studied on the ultimate compressive strength of new generation of Ultra High Strength Concrete (UHSC).Known as Reactive Powder Concrete (RPC) and also have used two non-linear functions; Genetic Programming (GP) and Group Method of Data Handling (GMDH), which are t...

this paper aims at investigating the influence of partial replacement of portland cement with ultrafine fillers compared to limestone powder on the durability and mechanical characteristics of concrete. for this purpose, ultrafine calcium carbonate materials with different specific surface areas of 9.7 and 15.1 m2/g and limestone powder (0.72 m2/g) were used. the results indicate that the ultra...

The increased use of reactive powder concrete (RPC) in structures has attracted attention towards the structural behavior RPC fires. This work examines experimentally performance and NSC columns subjected to 25% ultimate load exposed direct fire flame for a period 30 60 min at various temperature levels. paper aims evaluate maximum level duration that can be withstood by this type columns. resu...

Reviewing the research on reinforced reactive powder concrete’s bonding properties from three perspectives: test methods, influencing factors of and stress-slip constitutive relationship. For central pull-out test, steel bar bond stress state deviates actual engineering structure, beam is closer to situation. The relevant experimental at home abroad bond-slip model based are described in detail...