Abstract Self compacting concrete (SCC) is a new construction material in the world. The aim of this research is to construct self compacting concrete with high compressive strength using combination of nano silica and micro silica. For this purpose, nano silica, micro silica, Portland cement type 2, superplasticizer (SP), and gravel and sand have been used. Three different groups of samples wi...

The article presents a study of changes in the mineralogical composition cement when adding microsilica different concentrations using diffractometer DRON-3 with СuCa-radiation, β-filter. X-ray phase analysis on semi-quantitative basis was carried out powder sample diffractograms method equal weights and artificial mixtures. work examines effects at microstructural level. aim to improve physico...

A current problem in the construction industry is lack of complex, scientifically based technological materials and design solutions for universal types building materials, products, structures, especially terms structures operating under conditions aggressive chloride exposure. The aim study was to compare evaluate differences durability conventional variotropic concretes made using three diff...

Utilization of pozzolanic materials (fly ash, slag, zeolite, metakaolin, microsilica and more) in the manufacturing of cement and concrete has increased considerably over the last decades. Another option is to use concrete containing sulfate resisting cement. This could help minimize the harmful impacts on concrete exposed to an aggressive environment. The issue of the deteriorative impact of t...

Abstract: Efforts have been carried out in order to use microsilica to develop a forsterite bond rather than other types of binders in the basic refractory castables. According to the higher drying rate and sinterability of colloidal silica, it has been proposed in the recent years. In the present work, effects of replacement of microsilica by colloidal silica evolution of forsterite bond have ...