Porous asphalt paving is a modern design method that differs from the usual pavements' traditional designs. The difference structure of porous pavements allows free passage fluids through their layers, which controls or reduces amount runoff water accumulated in area by allowing flow rain and surface runoff. cross-structure this type works as suitable for managing rainwater representing groundw...

Permeability of concrete is commonly used as a key index for assessing the durability of concrete, especially when concrete is to be exposed to the aggressive environment. For a porous material like concrete, permeability depends on porosity and pore characteristics such as pore size, orientation, connectivity, and size variation. The effects of porosity and pore characteristics on permeability...

The application of cementicios materials is widely extended fundamentally for its use as structural elements. In this sense, it presents some advantages respect to other materials, in spite of the different physical and chemical attacks that limit its durability. This durability is a function of its porous structure, because the existence of pores facilitates the destructive agents which attack...

Due to expansion in infrastructure and increased development of urbanization Ethiopia, most the places are covered either by impermeable cement concrete or bitumen that blocks percolation water from rainfall. A porous made zero fine aggregates, creating a pore permits be permeable, is highly desirable. Similarly, demand for natural coarse aggregates remains high, while resources being depleted....

This article presents the results of experimental research, which characterizes parameters and properties porous structure aerated concrete based on industrial waste. Structurally optimal representing physical-mechanical, thermal-technical concrete-based exterior wall structures have been identified. The test were carried out in research laboratories using block constructions with an compositio...

Waters’ variant of the Boneh-Boyen IBE scheme is attractive because of its efficency, applications, and security attributes, but suffers from a relatively complex proof with poor concrete security. This is due in part to the proof’s “artificial abort” step, which has then been inherited by numerous derivative works. It has often been asked whether this step is necessary. We show that it is not,...