| 摘要 |
<p>Most of the interstitial water is removed from the resin before it is transferred to a conditioning container. A fluid paste is prepared that is formulated in such a way that the total water in the paste plus any residual water will harden the paste but is not sufficient to totally hydrate the cement. This is injected and mixed with the resin which is then allowed to harden. The resin's residual water level is reduced to 2 to 5 wt.%. The paste contains cement, granulated sand and quartz, additives and water. The paste has a water:cement ratio 0.21:1 by weight. The sand and quartz have a range of particle sizes, the maximum size being 1200 mu m. The cement has a high tricalcium silicate content and a low aluminate content. Additives can include fumed silica, plastifiers, gelling agents and stabilizing additives. Mixing is carried out using a rotating blade which is sacrificed in the hardened matrix.</p> |
