球状化処理したホタテ貝殻を混入したセメントペーストの流動性評価  [in Japanese] Flowability of cement paste using spherical particles prepared from scallop shell  [in Japanese]

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Author(s)

Abstract

Fly ash, typically used in very high-strength concrete mixes, does several things. It increases workability at a given water-cement ratio because of its "ball-bearing" effect, thus allowing a reduction of mixing water. Upon recrystallization from a scallop shell dissolved in HNO_3 vaterite-type CaCO_3 particles precipitated as spherical crystals. Because vaterite particles are spherical shaped, they showed a ball bearing effect that allows concrete to be produced using less water. The flowability gain derived from 10 to 30% vaterite particles (by weight of cementitious materials) was comparable to that of cement containing fly ash.

Journal

  • Research reports Hakodate Technical college

    Research reports Hakodate Technical college (41), 57-61, 2007

    Hakodate National College of Technology

Codes

  • NII Article ID (NAID)
    110006390153
  • NII NACSIS-CAT ID (NCID)
    AN00204755
  • Text Lang
    JPN
  • Journal Type
    大学紀要
  • ISSN
    02865491
  • NDL Article ID
    8720774
  • NDL Source Classification
    ZV1(一般学術誌--一般学術誌・大学紀要)
  • NDL Call No.
    Z22-838
  • Data Source
    NDL  NII-ELS 
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