Effect of Fine Sand of Blast-Furnace Slag on Freeze and Thaw Resistance, Sulfate Resistance and Sulfuric Acid Resistance of Mortar

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  • 凍結融解抵抗性，硫酸塩抵抗性および硫酸抵抗性に及ぼす高炉スラグ細骨材の影響
  • トウケツ ユウカイ テイコウセイ,リュウサンエン テイコウセイ オヨビ リュウサン テイコウセイ ニ オヨボス コウロ スラグサイコツザイ ノ エイキョウ

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Abstract

<p>The effect of fine sand of blast-furnace slag (SBFS) on freeze-thaw resistance, sulfate resistance, and sulfuric acid resistance in mortar whose aggregate is replaced in part or in full with blast furnace slag (SBFS) was investigated. Evaluation carried out on small test specimens confirmed that freeze-thaw resistance, sulfate resistance, and sulfuric acid resistance all improve as the SBFS substitution rate increases. However, increased porosity with a larger proportion of pores sized 50 nm or larger was also observed. In the case of the use of molten slag from municipal solid waste (SMSW), no improvement in freeze-thaw resistance was observed with increases in SBFS substitution rate.</p>

Journal

  • Journal of MMIJ

    Journal of MMIJ 133 (7), 151-156, 2017

    The Mining and Materials Processing Institute of Japan

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