Acrylic polymer that is highly stable against chemicals and is a good choice when concrete is subject to chemical attack. In this study, self-compacting concrete (SCC) made using acrylic polymer, nanosilica and microsilica has been investigated. The results of experimental testing showed that the addition of microsilica and acrylic polymer decreased the tensile, compressive and bending strength...

The effect of hydrogels containing nanosilica (NSi) on the autogenous shrinkage, mechanical strength, and electrical resistivity cement pastes was studied. interaction between surrounding cementitious matrix examined using thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM). addition decreased shrinkage in this reduction showed a ...

Every year a large amount of coal fly ash (CFA) is generated and dumped in ponds. Fly has numerous toxic heavy metals, which leads to water pollution due the percolation these metals. Heavy metal toxicity become major issue for whole globe. Moreover, CFA several value-added minerals, such as silica, alumina, ferrous amounts. Therefore, synthesis silica nanoparticles from their application remov...

Stable foams that can resist disproportionation for extended periods of time have important applications in a wide range technological and consumer materials. Yet, legislative initiatives limit the surface active materials be used environmental impact reasons. There is need technologies to efficiently produce multiphase using more eco-friendly components, such as particles, which traditional th...

An efficient and environmentally benign   method for the synthesis of aryl iodides have been developed by diazotization of aromatic amines with NaNO2 and nanosilica periodic acid (nano-SPIA) as a green catalyst via grinding followed by a sandmeyer iodination by KI under solvent-free conditions at room temperature. The ensuing aryl diazonium salts supported on nano-SPIA were sufficiently stable ...