EXPANSION OF SILICEOUS AGGREGATE IN LiOH SOLUTION

摘要

The absorption water of products of alkali-silica reaction has been studied in this paper, the absorption water ability is KOH>NaOH> LiOH. The expansion action of siliceous aggregate has been investigared in different environment such as LiOH, KOH, LiOH+KOH. LiOH-silica reaction produced compact texture and less-expansive product L-S-H that was around unreacted aggregate and protected the reactive aggregate from further attack by alkalis. The LiOH-silica reaction itself doesn't cause expansion and cracking of concrete, LiOH can inhibit the expansion due to ASR.