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。
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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