安山岩骨料碱活性及抑制试验研究

Experimental Study on Alkali Activity and Inhibition of Andesite Aggregate

新建敦化至白河铁路DBSG-3标段因现用的玄武岩骨料单价过高,面临着使用具有碱-硅酸盐活性安山岩骨料的问题,本文以岩相法和快速砂浆棒法为基础,对安山岩骨料的碱活性进行了判定;同时进一步分析了掺入粉煤灰和减水剂对安山岩碱活性的抑制效果。

due to the high unit price of the currently used basalt aggregate in the dbsg-3 section of the new dunhua-baihe railway, andesite aggregate with alkali-silicate activity is faced with the problem of using it. Based on the lithofacies method and fast mortar bar method, the alkali activity of andesite aggregate is determined in this paper. Meanwhile, the inhibitory effect of fly ash and water reducer on the alkali activity of andesite was further analyzed.