Concreto de pós reativos: estudo da arte e análise experimental

Abstract

Concrete is currently among the most widely used materials in the world. Thus, due to the wide range of its use, the search for improvements in its properties and forms of use is a constant in the engineering universe. With a high mechanical strength and basically composed of ultra thin materials, it can be said that the development of Post Reactive Concrete (CPR) was a consequence of this yearning for technological development. The CPR microstructure makes it more compact, with a significant reduction in porosity and permeability, thus achieving a long service life. The particle packing method was used to define particle size compositions, and techniques necessary for mixing, molding, thickening and thermal curing were developed. This article analyzes the mechanical effects of Reactive Powders Concrete, evaluating the compressive strength at 28 days, with the main analysis for the effects of the use of chemical additives (superplasticizers, strength accelerator), type of aggregates used, powder colors and curing thermal in the early ages.