Mechanical Behavior of Stabilizing Materials Using Silicate Mineral Powder

摘要

This study aims to develop eco-friendly materials that can reduce the high unit weight of carbonate cement, as typical ground improvement material, and the release of harmful substances. Silicate binder, which is an inorganic matter based on a silicate mineral, includes kaolin, illite and metakaolin. A silicate mineral is made into silicate binder through continuous weathering. Most clay minerals belong to this silicate binder. This study conducted a preliminary study on the strength properties of feldspar powder with high activity. A specimen was made using various silicate material sources such as feldspar, metakaolin, silica fume, illite, dolomite and silica stone. This study analyzed the uniaxial compressive strength according to the type and particle size of silicate binder. The analysis result showed that the uniaxial compressive strength of a specimen using feldspar powder as silicate binder was highest. In particular, the compressive strength of a specimen where silicate powder was added as binder was higher compared to normal cement. This means that feldspar powder with high activity can be utilized as an eco-friendly resource that can replace cement.