Szukana fraza: [Abstract = "In order to describe chemical and physical properties of brown coal fly\-ash from Konin region, analysis of X\-ray radiography and scanning microscopy was used. The article aims to present the possibility of application activated brown coal fly\-ash for hydraulic binding agents production, especially \- to stabilize foundation soil. Findings on bearing capacity \(CBR\) and dynamics of growing compressive strength \(Rc\) of soil and binders mixture, prove its suitability for communication engineering."]