The effective foam concrete with the additive of silica fume

The results of investigation of the influence of silica ^ fume on the strength, heat conductivity and moisture of insulating foam concrete of non-autoclave curing. With the help of X-ray diffraction and electron microscopy studies of cement stone set changing its phase composition and structure of tumors when introduction of ultra disperse additive. It is revealed that the introduction of silica fume together with hyper softener based on polycarboxylates ”MS-Power-Flow-3100” can increase the compressive strength of the foam concrete compared to the control samples. Thus, the thermal conductivity of the material varies slightly with additives. Furthermore the use of the above additives leads to lower cost of the finished product and utilization of large-tonnage waste of the steel industry. These studies have confirmed the feasibility of joint introduction silica fume and hyper softener in the composition of insulating foam concrete of non-autoclave curing.