Influence of Hydrostatic Pressure and Cationic Type on the Diffusion Behavior of Chloride in Concrete

被引:15
作者
Liu, Huanqiang [1 ,2 ]
Jiang, Linhua [1 ]
机构
[1] Hohai Univ, Coll Mech & Mat, Nanjing 210098, Peoples R China
[2] North China Univ Water Resources & Elect Power, Sch Civil Engn & Transportat, Zhengzhou 450011, Peoples R China
关键词
hydrostatic pressure; diffusion source solutions; cation; chloride diffusion coefficient; PORE SOLUTION; SALT-TYPE; IONS; CORROSION; PENETRATION; BINDING; REINFORCEMENT;
D O I
10.3390/ma14112851
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The durability of the concrete in underground and marine engineering is affected by the underground and ocean environment. Chloride diffusion coefficient under hydrostatic pressure is a key parameter of concrete durability design under corresponding conditions. Therefore, this paper studies the diffusion behavior of chloride in different diffusion source solutions by experiment and simulation. Based on the experimental results, this paper proposes a new chloride diffusion model under the coupling effect of diffusion and convection. The interaction of ions and compounds in the diffusion source solutions, concrete pore fluid, and concrete material are considered in the new chloride diffusion model. The experimental results show that chloride diffusion rate is significantly affected by hydrostatic pressure, which increases with the increase of hydrostatic pressure. The chloride diffusion coefficient shows a certain difference in difference diffusion source solutions. The chloride diffusion coefficient in divalent cationic diffusion source solutions is the largest, the chloride diffusion coefficient in the divalent and monovalent cationic compound ones is in the middle, and the chloride diffusion coefficient in the monovalent cationic ones is the smallest. There is a linear relationship between the chloride diffusion coefficient and the hydrostatic pressure whether in single or combined cationic diffusion source solutions.
引用
收藏
页数:20
相关论文
共 64 条
[1]  
AH Metwally, 2010, CORROS SCI, V52, P292, DOI [10.1016/j.corsci.2009.09.004, DOI 10.1016/J.CORSCI.2009.09.004]
[2]   Characterization of chloride penetration in hydraulic concrete structures exposed to different heads of seawater: Using hydraulic pressure tank [J].
Alfatlawi, Thair Jabar Mizhir ;
Alsultani, Riyadh Abdulabbas Ali .
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH, 2019, 22 (03) :939-946
[3]   THE EFFECT OF CHLORIDE-ION SOURCE ON THE FREE CHLORIDE-ION PERCENTAGES IN OPC MORTARS [J].
ALHUSSAINI, MJ ;
SANGHA, CM ;
PLUNKETT, BA ;
WALDEN, PJ .
CEMENT AND CONCRETE RESEARCH, 1990, 20 (05) :739-745
[4]  
[Anonymous], 1999, CHINESE MIGRATION CO
[5]  
[Anonymous], 1995, ACCELERATED CHLORIDE
[6]  
[Anonymous], 2017, STM C.496/C.496M, P1, DOI [10.1520/C0039, DOI 10.1520/C0039]
[7]   Towards more sustainable coastal development in the Arabian Gulf: Opportunities for ecological engineering in an urbanized seascape [J].
Burt, John A. ;
Bartholomew, Aaron .
MARINE POLLUTION BULLETIN, 2019, 142 :93-102
[8]  
Chen C., 2009, LOW TEMP ARCHIT TECH, V9, P1
[9]  
Cheng X.L., 2014, APPL COMSOL MULTIPHY
[10]   Influence of cation types on the stability of bound chloride ions in cement mortar simultaneously under electric field and SO42- attack [J].
Chu, Hongqiang ;
Pan, Congling ;
Guo, Ming-Zhi ;
Cao, Li ;
Zhu, Zhengyu ;
Song, Zijian ;
Jiang, Linhua .
CONSTRUCTION AND BUILDING MATERIALS, 2020, 245