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Properties of Cement Mortar Using Limestone Sludge Powder Modified with Recycled Acetic Acid

Author

Listed:
  • Hwa-Sung Ryu

    (Hanyang Experiment and Consulting Co., Hanyang University, Ansan 15588, South Korea)

  • Deuck-Mo Kim

    (Hanyang Experiment and Consulting Co., Hanyang University, Ansan 15588, South Korea)

  • Sang-Heon Shin

    (Hanyang Experiment and Consulting Co., Hanyang University, Ansan 15588, South Korea)

  • Wan-Ki Kim

    (Department of Architectural Engineering, Hyupsung University, Hwaseong, 445-745, South Korea)

  • Seung-Min Lim

    (Innovative Durable Building and Infrastructure Research Center, Hanyang University, Ansan 15588, South Korea)

  • Won-Jun Park

    (Department of Architectural Engineering, Kangwon National University, Samcheok 25913, South Korea)

Abstract

One of the various methods of manufacturing low-carbon cement is substituting limestone powder as a raw material or admixture. Limestone sludge powder (LSSP) has the same composition as that of limestone powder. The surface characteristics of LSSP powder modified with recycled acetic acid (RAA) and the characteristics of cement using this modified LSSP as a substitute were investigated in this study. The surface of LSSP modified with RAA was converted into calcium acetate and had a large grain size. When conventional LSSP was used as a substitute for cement, the initial strength increased owing to improved pore filling; however, the strength after 28 days of aging was lower than that of non-substituted cement. In the case of modified LSSP being replaced with cement at up to 10% of the cement weight, however, the calcium acetate on its surface increased the amount of hydration products in the cement, thereby increasing both the initial and the long-term strength.

Suggested Citation

  • Hwa-Sung Ryu & Deuck-Mo Kim & Sang-Heon Shin & Wan-Ki Kim & Seung-Min Lim & Won-Jun Park, 2019. "Properties of Cement Mortar Using Limestone Sludge Powder Modified with Recycled Acetic Acid," Sustainability, MDPI, vol. 11(3), pages 1-10, February.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:3:p:879-:d:204252
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