锦屏一级水电站石英砂岩碱活性试验研究

Jinping Ⅰ Hydropower Station Silicarenite Alkaline Activity Tests

碱活性检验结果表明:锦屏一级水电站石英砂岩具有潜在的碱硅酸反应(ASR)活性。本文从抑制ASR的能力、抑制ASR膨胀的程度以及抑制ASR膨胀的工程安全性三个方面对掺粉煤灰抑制石英砂岩ASR的有效性进行了评估,结果表明,掺20%的粉煤灰可以有效地抑制锦屏石英砂岩的ASR膨胀。

The alkaline activity tests indicate that Jinping Ⅰ Hydropower Station silicarenite has potential alkaline silicic acid reaction（ASR） activity.In this paper effectiveness of admixing fly ash for inhibition of silicarenite ASR is assessed from its capability of inhibition of sill carenite ASR,the expansion degree and the expansion to safety of the project. The study results demonstrate that admixing 20% fly ash can effectively inhibit Jinping Ⅰ Hydropower Station silicarenite ASR expansion.