SELF AGED EXPANDING AND PRESSURIZING GROUT AND NAILING METHOD USING IT

摘要

Provided are a self-aged expandable pressurizing grout material which is improved in expansion, solidification velocity and environmental-friendliness, and a nailing process using the grout material. The self-aged expandable pressurizing grout material comprises 5-30 wt% of a II-type anhydrous gypsum; 10-40 wt% of gypsum dihydrate; and the balance of a clinker comprising 4CaOÀ3Al2O3ÀSO3. Preferably the clinker comprises 4CaOÀ3Al2O3ÀSO3 in an amount of 50 wt% or more and less than 100 wt%; and 2CaOÀSiO2 in an amount of 50 wt% or less and more than 0.