Gas permeability of partially saturated cement-based materials considering water sensitivity

被引：0

作者：

Zhu, Pinghua ^{[1
]}

Zhang, Xudong ^{[1
,2
]}

Song, Yang ^{[1
,2
]}

Sheng, Yanmin ^{[2
]}

Zhao, Li ^{[2
]}

Ge, Pei ^{[2
]}

Wang, Chuanrui ^{[3
]}

机构：

[1] Changzhou Univ, Sch Urban Construct, Changzhou 213164, Peoples R China

[2] Changzhou Inst Technol, Sch Civil Engn Architecture, Changzhou 213032, Peoples R China

[3] Univ Lille, CNRS, Cent lille, LaMcube, Lille, France

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2024年 / 450卷

基金：

中国国家自然科学基金;

关键词：

Cement-based materials; Gas permeability; Nuclear magnetic resonance; Water sensitivity; Partially saturated; PORE STRUCTURE CHARACTERIZATION; QUANTITATIVE CHARACTERIZATION; LIQUID WATER; CONCRETE; CHLORIDE; PASTE; IONS; DIFFUSIVITY; PARAMETERS; POROSITY;

D O I：

10.1016/j.conbuildmat.2024.138641

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Gas permeability is a crucial factor influencing the durability of cement-based materials, which are usually in a partially saturated state. This study examines the impact of the water-to-cement (w/c) ratio, water saturation and water sensitivity on the gas permeability of cement-based materials using Nuclear Magnetic Resonance (NMR) and Mercury Intrusion Porosimetry (MIP). The results indicate that the gas permeability of cement-based materials is strongly related to their porosity and pore size distribution. Relative gas permeability is directly influenced by water saturation and the initial state of the materials, with a noticeable hysteresis effect observed. Furthermore, the water sensitivity of cement-based materials results in no evident, but a slight decrease in gas permeability during water saturation.

引用

页数：16

共 50 条

[41] Alternatives for Fresh Water in Cement-Based Materials: A Review
Yousuf, Sumra
Shafigh, Payam
Muda, Zakaria Che
Katman, Herda Yati Binti
Latif, Abid
WATER, 2023, 15 (15)
[42] Radial gas-permeability measurement in cement-based materials under steady-state flow
Qian, Rusheng
Shi, Jiashun
Liu, Guojian
Pang, Bo
Liu, Zhiyong
She, Wei
Zhang, Yunsheng
FLOW MEASUREMENT AND INSTRUMENTATION, 2021, 79
[43] Water Repellent Treatment on Surface of Cement-based Materials
Zhang Peng
Zhao Tiejun
Wittmann, F. H.
PROCEEDINGS OF SHANGHAI INTERNATIONAL CONFERENCE ON TECHNOLOGY OF ARCHITECTURE AND STRUCTURE, PT II, 2009, : 599 - 608
[44] The influence of iron on water radiolysis in cement-based materials
Bouniol, P.
JOURNAL OF NUCLEAR MATERIALS, 2010, 403 (1-3) : 167 - 183
[45] Modelling of permeability in cement-based materials .1. Uncracked medium
Breysse, D
Gerard, B
CEMENT AND CONCRETE RESEARCH, 1997, 27 (05) : 761 - 775
[46] Characterization and permeability of cement-based materials containing calcium fluoride sludge
Lin, Wei-Ting
CONSTRUCTION AND BUILDING MATERIALS, 2019, 196 : 564 - 573
[47] Effect of pore shape on the thermal conductivity of partially saturated cement-based porous composites
Li, Hedong
Zeng, Qiang
Xu, Shilang
CEMENT & CONCRETE COMPOSITES, 2017, 81 : 87 - 96
[48] Modeling Anomalous Moisture Transport in Cement-Based Materials with Kinetic Permeability
Zhang, Zhidong
Angst, Ueli
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 2020, 21 (03)
[49] Effect of Inorganic Surface Treatment on Air Permeability of Cement-Based Materials
Pan, Xiaoying
Shi, Caijun
Jia, Lufeng
Zhang, Jiake
Wu, Linmei
JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2016, 28 (03)
[50] Capillary imbibition in cement-based materials with time-dependent permeability
Hall, Christopher
CEMENT AND CONCRETE RESEARCH, 2019, 124

← 1 2 3 4 5 →