| 摘要 |
<p>PURPOSE:To provide an inexpensive hydraulic material improved in fluidity without the need for wholly relying on any water-reducing agent or expensive means involving special processings. CONSTITUTION:A specified amount of solid particles A 5-50mum in mean diameter (e.g. Portland cement, mixed cement containing the same) is either wholly or partially coated with at least one layer of solid particles B (e.g. vitreous silica- contg. silica fume) capable of coating the particles A through agglomeration on the surface thereof in water and having a mean diameter 1/5 times that of the particles A, followed by agitation in such an amount of water as to account for 60wt.% of the sum of the particles A and B, thus obtaining the objective hydraulic material coated with the fine particles and improved in fluidity.</p> |
