Unfrozen Water Content and Developmental Mechanisms at the Structure–Soil-Stone Mixture Interface in Seasonally Frozen Regions

DOI

10.2991/978-94-6463-688-8_11How to use a DOI?

Keywords

Soil-rock mixture; Structure interface; NMR; Unfrozen water; Melt; 3D printing technology

Abstract

The rise in temperature induces alterations in the unfrozen water content(ω_u) at the soil-rock mixture and concrete interface, leading to a subsequent deterioration in interfacial strength. In this study, rough concrete surfaces were fabricated via 3D printing technology, and composite specimens comprising soil-rock mixtures and concrete with varying stone contents were prepared. The nuclear magnetic resonance (NMR) experiments were conducted to investigate the variation in unfrozen water content at the interface during the positive melting phase. The T₂ cut-off value was subsequently determined, allowing for the classification of pore water types, followed by an analysis of the developmental patterns of each type. The results reveal that the interfacial ω_u undergoes three distinct phases of change in response to varying rock content during the melting process. Analysis of the T₂ distribution identified 4.5 ms as the cut-off value separating bound water from capillary water in this specimen. The development of both bound and capillary water predominantly occurs below 0℃, with the growth rate of capillary water exceeding that of bound water. However, the content of bound water consistently remains higher than that of capillary water throughout the process.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xiaolong Chen
AU  - Wen Sun
PY  - 2025
DA  - 2025/04/30
TI  - Unfrozen Water Content and Developmental Mechanisms at the Structure–Soil-Stone Mixture Interface in Seasonally Frozen Regions
BT  - Proceedings of the 2024 6th International Conference on Civil Architecture and Urban Engineering (ICCAUE 2024)
PB  - Atlantis Press
SP  - 96
EP  - 102
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-688-8_11
DO  - 10.2991/978-94-6463-688-8_11
ID  - Chen2025
ER  -