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Effects of freezing–thawing cycles on mechanical properties of slurry-like mud treated by physicochemical combination method
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Effects of freezing–thawing cycles on mechanical properties of slurry-like mud treated by physicochemical combination method
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Journal Article
Effects of freezing–thawing cycles on mechanical properties of slurry-like mud treated by physicochemical combination method
2025
Overview
The physicochemical combination method (PCCM) is a new integrated method for treating and reusing large volumes of slurry-like mud (MS). To study the effects of freezing–thawing (FT) cycles on the mechanical properties of MS treated by the PCCM, unconfined compression tests (UCTs) and microstructural tests are both conducted on PCCM-treated MS samples with different combinations of FT cycles, initial water contents (
w
ei
), and cementitious binder contents (
w
c
). The experimental results indicate that the unconfined compressive strength (
UCS
) and the elastic modulus (
E
) of PCCM-treated MS decrease exponentially when the FT cycles increase from 0 to 15. For the PCCM-treated MS samples subjected to 15 FT cycles, the reduction degree of their strength, as well as deformation resistance, is more sensitive to the variation of
w
c
compared to that of
w
ei
. Meanwhile, the
UCS
and
E
of PCCM-treated MS samples are higher than those of the corresponding MS samples treated by the conventional cement solidification method (CCSM). The superior resistance to FT cycles of PCCM-treated MS is attributed to the presence of APAM, which not only facilitates the aggregation of soil particles but also enhances the dewatering efficiency of MS. Notably, the
E
/
UCS
value of CCSM-treated MS is 1.25 times larger than that of PCCM-treated MS, indicating the application of PCCM can significantly enhance the toughness of the treated MS.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
