シラスの工業的利用に関する研究 (第4報) : シラスモルタルの強度におよぼすリン酸アルミニウムの影響

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タイトル別名
  • Studies on the industrial application of "Shirasu" (Report 4) : effects of Al(H_2PO_4)_3 on the strength of Shirasu mortar bodies
  • シラスモルタルの強度におよぼすリン酸アルミニウムの影響
  • シラスモルタル ノ キョウド ニ オヨボス リンサン アルミニウム ノ エイキョウ

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抄録

Shirasu, and slaked lime were mixed with dilute aluminium phorphate water solution and then poured into mold or press molded. The mortar bodies were prepared as follow; mixing ratio of shirasu:slaked lime= 0.5:1, 1:1, 2:1, mixing water 75~148%, addition of Al(H_2PO_4)_3 0.5~2%. Results are as folloｗ; apparent density 2.18~2.39, bulk density 1.35~1.51, apparent porosity 34.1~40.9%, water absorption 66.0~74.3% and bending strength of 28 days curing in the atomsphere 45.2~80.0kg/cm^2. The pressed molded mortar were prepared as follow; mixing ratio of shirasu:slaked lime=0.5:1, 1:1, 2:1, mixing water 50~60, addition of Al(H_2PO_4)_3 0~5.0%, press-molding pressure 50kg/cm^2. Results are as follow; apparent density 2.26~2.49, bulk density 1.44~1.65, apparent porosity 31.8~40.4%, water absorption 19.7~36.3% and compressive strength of 28 days curing in the atomosphere 39.9~88.2kg/cm^2.

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