Isneini, mohd and Sagawa, Yasutaka and Hamada, Hidenori and Daisuke, Yamamoto An Experimental Study on Mitigating Alkali Silica Reaction by Using Lithium Hydroxide Monohydrate. international conference on construction and building engineering (IconBuild 2017). (Submitted)

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Abstract

The ASR suppression effect of lithium hydroxide monohydrate (LiOH.H2O) in mitigating ASR was evaluated by both mortar bar test and concrete prism test. Mortar bars were made based on JIS A 1146. Meanwhile concrete prisms were cast based on RILEM AAR-3. Mortar and concrete mixtures used reactive aggregates in pessimum proportion. The results indicated that concrete (L1) with reactive aggregates were immersed in 4M/l LiOH.H2O solution can reduce expansion. Then, concrete (L3) with reactive aggregates were covered with cement paste made with 4M/l LiOH.H2O and were immersed in 4M/l LiOH.H2O solution can reduce expansion. Treatment of reactive aggregates with 4M/l LiOH.H2O in controlled room at 80oC for 5 days can reduce expansion for andesite-1, and at 80oC for 10 days can reduce expansion for andesite-2. The LiOH.H2O results showed that maximum absorption LiOH.H2O of coarse aggregates used andesite-2 = 1.75 mol/l at temperature 80oC. Then, effective immersing period for passivation of aggregates was at day 7.

Item Type:	Article
Subjects:	T Technology > TH Building construction
Divisions:	Fakultas Teknik (FT) > Prodi Teknik Sipil
Depositing User:	Dr.Eng Mohd isneini
Date Deposited:	02 Jun 2017 07:09
Last Modified:	02 Jun 2017 07:09
URI:	http://repository.lppm.unila.ac.id/id/eprint/1901

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