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A platform for research: civil engineering, architecture and urbanism
Study on the properties of artificial flood-prevention stone made by Yellow River silt
HighlightsYellow River silt has a certain activity, whose activity rate is 20.44%.The addition of slag enhanced the strength of artificial flood-prevention stone.The optimal mix proportion was achieved when using the compound alkali-activator.C-S-H gel is the main alkali-activated product of artificial flood-prevention stone.
AbstractIn the Yellow River Basin, the source of flood-prevention tone is scarce. The purpose of this study is to investigate the feasibility of producing a kind of artificial flood-prevention stone by using Yellow River silt via alkali-activated method. The effects of alkali dosage, slag content and curing age on the compressive strength of artificial flood-prevention stone were studied. The results showed that the specimen made from optimal mix proportion can meet the requirement of flood-prevention stone. The main product in alkali-activated process is C-S-H gel confirmed by microcosmic tests such as SEM/EDS, TG/DTG and so on. CaCO3 is generated by the carbonation of partial C-S-H gel and residual Ca(OH)2. C-S-H gel and CaCO3 have common contribution to strength. In addition, frost resistance of the artificial flood-prevention stone at the age of 90days was evaluated by freeze-thaw cycle method. The porosity and pore size distribution were tested by Mercury intrusion porosimetry (MIP) to explicate the change before and after freeze-thaw cycle. As a whole, it is feasible to produce artificial flood-prevention stone by using the Yellow River silt.
Study on the properties of artificial flood-prevention stone made by Yellow River silt
HighlightsYellow River silt has a certain activity, whose activity rate is 20.44%.The addition of slag enhanced the strength of artificial flood-prevention stone.The optimal mix proportion was achieved when using the compound alkali-activator.C-S-H gel is the main alkali-activated product of artificial flood-prevention stone.
AbstractIn the Yellow River Basin, the source of flood-prevention tone is scarce. The purpose of this study is to investigate the feasibility of producing a kind of artificial flood-prevention stone by using Yellow River silt via alkali-activated method. The effects of alkali dosage, slag content and curing age on the compressive strength of artificial flood-prevention stone were studied. The results showed that the specimen made from optimal mix proportion can meet the requirement of flood-prevention stone. The main product in alkali-activated process is C-S-H gel confirmed by microcosmic tests such as SEM/EDS, TG/DTG and so on. CaCO3 is generated by the carbonation of partial C-S-H gel and residual Ca(OH)2. C-S-H gel and CaCO3 have common contribution to strength. In addition, frost resistance of the artificial flood-prevention stone at the age of 90days was evaluated by freeze-thaw cycle method. The porosity and pore size distribution were tested by Mercury intrusion porosimetry (MIP) to explicate the change before and after freeze-thaw cycle. As a whole, it is feasible to produce artificial flood-prevention stone by using the Yellow River silt.
Study on the properties of artificial flood-prevention stone made by Yellow River silt
Wang, Baomin (author) / Li, Gaonian (author) / Han, Junnan (author) / Zheng, Yue (author) / Liu, Hui (author) / Song, Wanzeng (author)
Construction and Building Materials ; 144 ; 484-492
2017-03-27
9 pages
Article (Journal)
Electronic Resource
English
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