Potential for Development of Alkali-Silica Reaction in the Presence of Airfield Deicing Chemicals
Potential for Development of Alkali-Silica Reaction in the Presence of Airfield Deicing Chemicals
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机场除冰化学品存在下碱-硅反应的发展潜力
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
J. Lovell
中科院分区：
文献类型：
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作者：
P. Rangaraju;Ketan R. Sompura;J. Olek;S. Diamond;J. Lovell
本文着重于一些初步的研究进行调查的作用，以碱基机场融雪剂引起碱-硅反应（ASR）在机场道面混凝土。在这项研究中使用了修改的ASTM C 1260测试程序，其中用活性骨料制备的砂浆棒浸入除冰剂浸泡溶液而不是1 N氢氧化钠溶液中。此外，还对含有反应性骨料的砂浆棒进行了标准ASTM C 1260测试。在改进的ASTM C 1260试验中经受除冰剂溶液的砂浆棒的膨胀等于或显著大于在标准试验中暴露于1 N氢氧化钠浸泡溶液的砂浆棒的膨胀。根据这项研究的结果，似乎碱基机场除冰剂在启动和加速ASR方面具有相当大的潜力。在使用非反应性骨料的平行研究中，在标准或修改的ASTM C 1260试验中均未观察到显著膨胀。
This paper focuses on some preliminary studies conducted to investigate the role of alkali-based airfield deicers in causing alkali-silica reaction (ASR) in airfield pavement concrete. A modified ASTM C 1260 test procedure was used in this study, in which mortar bars prepared with reactive aggregate were immersed in deicer soak solution instead of 1 N sodium hydroxide solution. In addition, standard ASTM C 1260 tests were also conducted on mortar bar containing reactive aggregate. Expansion of mortar bars subjected to deicer solutions in the modified ASTM C 1260 test was either equivalent or significantly greater than expansion of mortar bars exposed to the 1 N sodium hydroxide soak solution in the standard test. Based on the findings from this study, it appears that the alkali-based airfield deicers have considerable potential in initiating and accelerating ASR. In parallel studies with a non-reactive aggregate, no significant expansions were observed either in the standard or modified ASTM C 1260 test.