Study of the influence of the aggressive environment on the behavior of reactive powder concrete

Study of the influence of the aggressive environment on the behavior of reactive powder concrete

Phenomenological Aspects of Civil Engineering (PACE) - an International Congress
Volume 1 - Issue 1 - PACE-2021

chadli mounira Bensmail messaouda mekki mellas

Abstract

Reactive powder concretes (RPC) are original concretes characterized by particle diameter less than of 600 µ and an essential strength (compressive and flexural) and durability. The main objective of this study consists in studying the physico-mechanical properties, and the durability in a sulphated environment of a reactive powder concrete using materials available in our region, we have integrated materials rich in silica (slag, silica fume and crushed quartz) in Portland cement with 15, 23 and 25%, respectively. From this study we can make the following conclusions: The incorporation of additions increases the compressive and flexural tensile strengths, which gives an improvement in the compactness of the mixtures by the pozzolanic effect of these last, by removing the particle size phase in the RPC and the affluence of dune sand (southern Algeria) and slag (industrial waste from the iron ore blast furnace), because Na2SO4 has a major effect on the compressive strength notably for non-fibrous formulations. NaOH improve the compressive strength for all formulations.

Keywords

Reactive Powder Concrete ; Compression; Flexion; Durability ; Aggressive environments.
https://www.acapublishing.com/dosyalar/baski/PACE_2021_328.pdf