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This paper aims to determine the efficacy of LiNO3 on mitigating expansion of mortar bars and microbars prepared with four types of alkali-silica reactive aggregates.Results showed that,for specimens prepared with Zeolited perlite,LiNO3 exhibited good inhibition effects on ASR; however the content of LiNO3 was insufficient,later expansion may be even greater than those without lithium specimens.