Production of sodium silicate powder from waste glass cullet for alkali activation of alternative binders
By R. Vinai, M. Soutsos. Cement and Concrete Research, 2019
253 citations recorded by the source corpus.
Abstract A simple process to produce sodium silicate powder from glass cullet has been developed. A mixture of glass powder, sodium hydroxide powder, and water was heated at temperatures of 150 to 330 °C. The effects of glass to NaOH ratio, temperature and duration, inclusion of water and fineness of NaOH were investigated. Fly ash and fly ash/GGBS blends were the precursors for alkali activated binder (AAB) mortars produced with this sodium silicate. Compressive strengths were similar to or better than those obtained with commercially available sodium silicate and sodium hydroxide solutions. FT-IR tests suggested that the reactivity of the glass derived sodium silicate powder was related to the number of non-bridging oxygen atoms in the silicate structure. Cost comparison between AAB and Portland cement concretes gave similar results for normal strength concretes (35 MPa). AAB concretes with higher strengths (50 and 70 MPa) can be cheaper than equivalent traditional concrete.
Subfields: Building and Construction, Civil and Structural Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/38fb3526451b8bc4cca37c80602b1390f107bb41
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In Building and Construction
- Wengui Li
- Vivian W. Y. Tam
- Zhuo Tang
- Mariam Abdulkareem
- Jouni Havukainen
- J. Nuortila‐Jokinen
- Mika Horttanainen
- Jorge de Brito
In Civil and Structural Engineering
- Wengui Li
- Vivian W. Y. Tam
- Zhuo Tang
- Mariam Abdulkareem
- Jouni Havukainen
- J. Nuortila‐Jokinen
- Mika Horttanainen
- Caihong Xue
In Materials Chemistry
- Mariam Abdulkareem
- Vivian W. Y. Tam
- Jouni Havukainen
- J. Nuortila‐Jokinen
- Zhuo Tang
- Mika Horttanainen
- Wengui Li
Citations in the corpus
- Advanced progress in recycling municipal and construction solid wastes for manufacturing sustainable construction materials (2020, background): “, 2019), and alkali activators (Vinai and Soutsos, 2019), in the context of geopolymer.”
- Environmental and economic perspective of waste-derived activators on alkali-activated mortars (2021, methodology): “By and large, AABs are produced by reacting solid aluminosilicate raw materials (precursor) with an alkaliactivator to form a hardened binder (Tong et al., 2018; Vinai and Soutsos, 2019).”