| 摘要 |
<p>PURPOSE:To provide an inexpensive grouting material for grouting suitable for uses such as redrilling. CONSTITUTION:The objective grouting material comprises a hydraulic ultrafine particulate material, composed of 40-90 pts.wt. granulated slag, 5-40 pts.wt. cement clinker and 3-20 pts.wt. gypsum and having 8000-15000cm<2>/g Blaine value and nonhydraulic ultrafine particulate material, containing one or two or more selected from the group of limestone, annealed slag, quartzite and clay and having a higher Blaine value than that of the hydraulic ultrafine particulate material. Since the grouting material is excellent in properties of developing the early strength with hardly any change in strength thereafter and a desired grouting strength can be obtained according to the blending, this inexpensive grouting material applicable to various soil improving works including redrilling use is provided.</p> |
