Journal
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
Volume 32, Issue 6, Pages 1388-1391Publisher
JOURNAL WUHAN UNIV TECHNOLOGY
DOI: 10.1007/s11595-017-1757-9
Keywords
smelting waste slag of non-ferrous metal; geopolymer; compressive strength; microstructure analysis
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Funding
- Key Project of National Natural Science Foundation of China [51472040]
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The geopolymer samples were prepared with smelting waste slag of non-ferrous metal as the raw material and water glass as the activator. The effect of modulus of water glass and water binder ratio on the compressive strength was studied. The results show that the strength of the geopolymer activated by water glass with modulus of 1.1 and water binder ratio of 0.28 can maintain an increasing trend in the 90 curing days. Through the analyses with XRD, SEM (EDS), and FTIR, the main reaction products are found to be geopolymer gels, which bond the crystalline minerals to provide strength. The molecular chains of amorphous phase in slag become shorter after depolymerization-polycondensation.
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