In the constructing of duct grouting for post-tensioning bonded prestressed concrete, the suitable cement paste is the most essential and important factor to guarantee grouting quality.

在后张有粘结预应力砼孔道灌浆的施工中，良好性能的水泥浆体是保证灌浆质量的最基本、最重要的因素。

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In accordance with the characteristics of curved prestressed duct, the mixing ratio test of cement paste and quality assurance measurement of duct grouting construction are introduced.

针对曲线预应力孔道的特点，介绍水泥浆配合比试验和灌浆施工的质量保证措施。

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In addition, whereas barnacles just ooze out their cement, Crassicorophium processes its material in a spider-like spinning duct.

ECONOMIST: A species of crustacean makes silk underwater