Experimental and mechanistic study on the water resistance of sodium methylsilicate-modified raw soil

WANG Wei; YANG Yang

doi:10.20265/j.cnki.issn.1007-2993.2024-0524

Volume 40 Issue 1

Feb. 2026

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WANG Wei, YANG Yang. Experimental and mechanistic study on the water resistance of sodium methylsilicate-modified raw soil[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(1): 132-140. doi: 10.20265/j.cnki.issn.1007-2993.2024-0524

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WANG Wei, YANG Yang. Experimental and mechanistic study on the water resistance of sodium methylsilicate-modified raw soil[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(1): 132-140. doi: 10.20265/j.cnki.issn.1007-2993.2024-0524

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Experimental and mechanistic study on the water resistance of sodium methylsilicate-modified raw soil

doi: 10.20265/j.cnki.issn.1007-2993.2024-0524

WANG Wei^{1, 2
,},
YANG Yang^{1, 2
,}

1.
School of Architecture, Inner Mongolia University of Technology, Hohhot 010051, Nei Mongol, China
2.
Inner Mongolia Key Laboratory of Grassland Human Settlement System and Low-Carbon Construction Technology, Hohhot 010051, Nei Mongol, China

Received Date: 2024-11-12
Accepted Date: 2025-06-26
Rev Recd Date: 2025-04-23
Publish Date: 2026-02-06

Abstract

Abstract

This study investigates the reinforcement mechanism of sodium methylsilicate (SM) on the water resistance of raw soil materials using surface coating and internal incorporation modification methods, with raw soil from central Nei Mongol as the base material. Through 60-minute static water immersion and 120-minute dynamic scouring tests, the following results were obtained: (1) Mechanical properties: Surface-coated and internally incorporated specimens demonstrated 16.67% and 47.66% higher average compressive strength, respectively, compared to the control group. (2) Hydrostatic performance: The average water absorption rates were 1.57% and 2.17% for surface-coated and internally incorporated specimens, with corresponding softening coefficients reaching 0.80 and 0.81. (3) Scouring resistance: The average water absorption rates measured 0.97% and 2.11%, with softening coefficients of 0.55 and 0.63, respectively. (4) Microscopic mechanism: Surface coating modification forms an external encapsulated waterproof layer, while internal incorporation modification generates polysiloxane films through SM-soil particle interactions, simultaneously enhancing both waterproofing capability and structural stability.
- modified raw soil,
- compressive strength,
- water resistance,
- sodium methylsilicate

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References(20)

References

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Experimental and mechanistic study on the water resistance of sodium methylsilicate-modified raw soil

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