In this research, we assessed the influence of an ultrafine 2CaO·SiO₂ powder on the hydration properties of a reactive powder concrete system. The ultrafine powder was manufactured through chemical combustion method. The morphology of ultrafine powder and the development of hydration products in the cement paste prepared with ultrafine powder were investigated by scanning electron microscopy (S...

fiber reinforced polymers (frp) have widely used for the purposes of enhances strength and ductility of concrete columns. proper design of such hybrid columns, however, requires a better recognition of the behavior of concrete columns confined with frp. in this paper, the influence of frp thickness, concrete compressive strength, and column size on the performance of eccentrically loaded reacti...

Using recycled wastes and industrial by-products in construction materials has become mandatory to conserve the natural resources manage waste-disposal environmental problems. This experimental work investigates workability strength properties of reactive powder concrete (RPC), utilizing slag finely ground waste as partial substitutes for cement quartz sand, respectively. The results slump flow...

Reactive powder concrete (RPC) is an ultra-high-performance (UHPC) developed years ago by Bouygues, with the aim to build strong, durable, and sustainable structures. Some differences can be underlined between RPC high-performance (HPC); that say, exhibits higher compressive flexural strength, toughness, lower porosity, permeability compared HPC. Microstructural observations confirm silica fume...

reactive powder concrete (rpc) is an ultra high performance concrete which has superior mechanical and physical properties. the rpc is composed of cement and very fine powders such as crushed quartz (100–600 μm) and silica fume with very low water/binder ratio (w/b) (less than 0.20) and super plasticizer (sp). the rpc has a very high compressive and tensile strength with better durability prope...