首页|Effects of freezing-thawing cycles on mechanical properties of slurry‑like mud treated by physicochemical combination method
Effects of freezing-thawing cycles on mechanical properties of slurry‑like mud treated by physicochemical combination method
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NETL
NSTL
Springer Nature
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.
School of Civil Engineering, Wuhan University, Wuhan 430072, China
School of Civil Engineering, Wuhan University, Wuhan 430072, China||State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China||Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering of the Ministry of Education, Wuhan University, Wuhan 430072, China
NETL
NSTL
Springer Nature
