Under the conditions of higher water-cement ratio, a certain consistency FDN high-range water reducer and hermetic surrounding, the cement paste did not set in a long time.

• 研究结果表明，拉索内灌浆离析，使浆体中的水分、FDN高效减水剂等富集于拉索上段；在较大水灰比，一定浓度FDN高效减水剂及密闭条件下，水泥浆体会长时间不凝结。