南水北调中线唐河倒虹吸混凝土细骨料的改选

The change of fines used for Inverted Siphon of the Tang River of The middle Route Project (MRP) for South-to-North Water Transfer

唐河倒虹吸是南水北调工程中的一座大型河渠交叉建筑物。初步设计报告混凝土浇筑细骨料为唐河砂子,但经检验唐河砂子具有碱活性。为确保混凝土的质量建管处多次组织有关专家进行分析论证,并作了大量实验,最后改用了沙河砂子。

The Inverted Siphon Project of the Tang River is a large-scaled river-graff-cross building of South-to-North Water Transfer. In the initial design report, fines used to make concrete is sand from the Tang River. However, after examining, it is found that the sand from the Tang River is based-activity. To assure the quality of the concrete, the construction administration organized related experts several times to analysis, argue, and test. At last, it is changed to use sand from the Sha River to make concrete.