| 摘要 |
<p>A rapid or instantaneous gelling cementitious composition comprises 0-80% of a hydraulic cement, 15-80% of water, 0.01-5% of an organic gelling agent e.g. an acrylic polymer or copolymer and 0-85% of a fine bulk filler, e.g. flyash. The preferred compositions exhibit no slump but are thixotropic and may be pumped to a point of use, e.g. in an underground mine, where containment of a liquid grout would be difficult.</p> |
