ASTM C 1260によるフライアッシュ含有モルタルの安山岩に対するASR抑制効果の評価  [in Japanese] An Assessment on Mitigating Effect of ASR in Fly Ash-Bearing Mortars with Andesite Stones by ASTM C 1260  [in Japanese]

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Author(s)

Abstract

Volcanic rocks such as andesite have popularly been used for aggregates in the Hokuriku District. Therefore, the andesitic aggregates have contributed to a steady occurrence of alkali-silika reaction (ASR) in concrete. Taking into account the effective utilization of local materials, so-called “Chisan-chisho”, both the reduction in the environmental impact and the rationalization of natural resources, positive countermeasures for mitigating ASR by using blended cements with fly ash (FA) or blast-furnace slag (BFS) are most expected. This paper examines the mitigating effects of mineral admixtures on ASR of mortars by the accelerated mortar-bar test (ASTM C 1260). As the result of test, the replacement with FA or BFS at normal percentages recommended by JIS A 5308 decreased significantly the expansion of mortar bars using reactive andesitic aggregates in the Noto peninsula. Especially, a high-quality fine FA produced in the Hokuriku District is hopeful in its practical use of concrete mixtures. Furthermore the ASR mitigating effects by mineral admixtures are assessed with a good performance by the test method “ASTM C 1260”.

Journal

  • Journal of the Society of Materials Science, Japan

    Journal of the Society of Materials Science, Japan 62(8), 498-503, 2013

    The Society of Materials Science, Japan

Codes

  • NII Article ID (NAID)
    130003367208
  • NII NACSIS-CAT ID (NCID)
    AN00096175
  • Text Lang
    JPN
  • ISSN
    0514-5163
  • NDL Article ID
    024846163
  • NDL Call No.
    Z14-267
  • Data Source
    NDL  J-STAGE 
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