Influence of Mixing Method and Mixing Ratio of Imitation Dry Sludge Powder on Compressive Strength of Geopolymer Mortar
So Goto1, Akihiro Maegawa2, Toshitsugu Inukai3, Shogo Yamamoto3, Takashi Hirose4
1. Graduate School of Environmental Studies Dept. of Environmental Engineering and Architecture, Nagoya Univ., Aichi, Japan.
2. Mie Prefecture Industrial Research Institute, Mie, Japan.
3. Dept. of Architecture, National Institute of Technology, Gifu College, Gifu, Japan.
4. Maruji Concrete Industrial Co., Ltd, Gifu, Japan.
Abstract: This study experimentally examined how the mixing method of geopolymer mortar by the powder addition method and the aqueous solution addition method and the mixing ratio of imitation dry sludge powder affect the compressive strength of resultant geopolymer mortar. It was found that regardless of the type of fly ash, the mixing method and the addition method of Na2SiO3 had no effect on the flow value, air content, and compressive strength. While using 3.0 mol/L Na2SiO3 aqueous solution, a maximum compressive strength of approximately 35 N/mm2 was obtained at normal temperatures, when the fly ash used has a specific surface area of approximately 7000 cm2/g and the mixing ratio of imitation dry sludge powder is up to 10.0%.
Keywords: Geopolymer, Sodium metasilicate, Mixing method, Sludge, Anhydrous citric acid, Compressive strength.
Pages: 170 – 185 | Full PDF Paper