Abstract
Aiming to solve the problem of hard to fill duct completely, the reasons are discussed. Water-cement ratio and admixture are the main influence factors to bleeding rate. There is a minimum grout bleeding rate when water-cement ratio is 0.38 and admixtures are added. The best treatment measure to grout leakage is to flushing out the grout and re-grouting via the on-site grouting test.
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