| 摘要 |
<p>PURPOSE:To obtain titled agent capable of gradually and linearly developing expansive force, also with ultimate high-level expansivity, by incorporating blast furnace slag powder in a pulverized sintered matter prepared from calcareous material containing iron compound. CONSTITUTION:First (A) 100pts.wt. of a pulverized sintered matter prepared from a calcareous material containing, in the post-calcination stage, iron compound so as to be 0.1-25wt% on a Fe2O3 basis is blended, if required, with (B) <=30pts.wt. of gypsum. Subsequently, 100pts.wt. of the resulting mixture is incorporated with (C) <=50pts.wt. of blast furnace slag powder with a Blaine specific area 2,000-8,000cm<2>/g thus obtaining the objective breaking agent. EFFECT:Easy to set processing condition, also with good workability when processed. Furthermore, capable of developing expansive force at any rate according to regulating its components.</p> |
