三峡工程混凝土骨料碱活性检验研究

Study on the aggregate alkaline activity test for the Three Gorges Project

三峡工程混凝土骨料碱活性检验项目是在以往大量长期的研究工作的基础上进行的复核检验。研究采用了化学法、38℃和 5 0℃养护砂浆棒长度法、水泥碱含量高达 1.5 %条件下 5 0℃养护砂浆棒长度法、压蒸法等方法进行检测 ,以便充分揭示三峡工程天然骨料和人工骨料是否存在活性。通过对检测结果的分析 ,对三峡二期工程混凝土骨料的选用提出了科学的建议。

The alkaline activity test on the concrete aggregate for Three Gorges Project is a re check test on the basis of the great number of long term research results. The chemical method, mortar bar length method and autoclave test are adopted in the study, in order to fully discover the activity of natural and artificial aggregates for the Three Gorges Project. On the basis of the analysis on the test results, some scientific suggestions have been put forward for the selection of concrete aggregate for the second stage of the Three Gorges Project.