凍結融解による岩石の風化を理解させるためのモデル実験におけるモルタルの利用可能性  [in Japanese] Potential of Mortar as an Experimental Material to Aid in the Understanding of Rock Weathering through Freezing and Thawing  [in Japanese]

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Abstract

<p>本研究は,岩石の凍結融解による風化の実験手法における新たな試料としてモルタルを提案し,その試料の作製方法の検討を行った.試料の作製は,岩石カッターで試料を切り出す方法とシリコンゴムシートの型枠で試料を打設する方法とで実施した.本研究では,先行研究で提案された凍結融解工程と破断荷重測定工程による破断荷重を調べる実験を行った.その結果,岩石カッターを用いず,型枠で試料を打設して作製した試料の場合には,含水試料と乾燥試料の破断荷重の違いを明瞭に識別でき,岩石の凍結融解による風化のモデル実験の試料としてふさわしい素材であることが明らかとなった.</p>

<p>We carried out an educational experiment to test if mortar pieces aid in the understanding of rock weathering through freezing and thawing. We applied pieces of mortar instead of Shikotsu welded tuff, which has been problematic in terms of mechanical strength. We employed two different methods of preparing the mortar pieces: cutting mortar with a diamond cutter, and pouring mortar into a silicon sheet form. Half of the respective mortar pieces were soaked in water. After freezing and thawing of the pieces, we examined their breaking loads. We found that the breaking loads of the wet pieces made with the cutter were indistinguishable from those of the dry pieces. On the other hand, in the case of those mortar pieces made with the silicon sheet form, clear difference were demonstrated between the breaking loads of wet pieces and dry ones. Thus, we concluded that mortar pieces made with a silicon sheet form are fit to use in this experiment.</p>

Journal

  • Education of Earth Science

    Education of Earth Science 70(1), 15-22, 2017

    Japan Society of Earth Science Education

Codes

  • NII Article ID (NAID)
    130007438904
  • NII NACSIS-CAT ID (NCID)
    AN00141043
  • Text Lang
    JPN
  • ISSN
    0009-3831
  • NDL Article ID
    028389042
  • NDL Call No.
    Z15-168
  • Data Source
    NDL  J-STAGE 
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