Densified silica fume is the most common type of silica fume used by concrete manufacturers, 85%~96% SiO2 content, 550-700kg/m3 bulk density, divided into Grade 85D, Grade 90D, Grade 92D, Grade 94D, Stopień 94 Contains Zirconia, and Grade 96D.It is widely used in various concrete construction projects. Densified silica fume is made by treating undensified silica … Continue reading Zlebiona opara krzemionkowa