Examining the Binding Mechanism of Chloride Ions in Sea Sand Mortar

DOI

10.2991/icache-16.2016.2How to use a DOI?

Keywords

sea sand mortar, water soluble chloride ions, micro structures, Friedel's salt

Abstract

The adsorption and binding mechanisms of chloride ion in sea sand mortars were investigated through measuring the water-soluble chloride ion content in this paper. In addition,the microstructure of Friedel's salt were characterized by three approaches : X-ray diffraction (XRD), thermal analysis method (TG/DTA) and scanning electron microscopy (SEM). The results show that water soluble chloride ion concentration in the sea sand mortar is closely related to the extraction temperature. The water soluble chloride ion concentration increases with the extraction temperature increasing. When extraction temperature is 65 , the concentration of water soluble chloride ion is about the double of mortars at 15 . Physically bound chloride ion in fly ash mortar shows low dissolution in lower temperatures. In the sea sand mortar, the endothermic peak of Friedel's salt does not appear on the TG/DTA curve, while the existence of Friedel's salt was determined by SEM and XRD picture. This is probably owing to the small amount of instable Friedel's salt content in the sea sand mortar.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Nengjun Gong
AU  - Xintang Wang
PY  - 2016/11
DA  - 2016/11
TI  - Examining the Binding Mechanism of Chloride Ions in Sea Sand Mortar
BT  - Proceedings of the 2016 2nd International Conference on Architectural, Civil and Hydraulics Engineering (ICACHE 2016)
PB  - Atlantis Press
SP  - 6
EP  - 11
SN  - 2352-5401
UR  - https://doi.org/10.2991/icache-16.2016.2
DO  - 10.2991/icache-16.2016.2
ID  - Gong2016/11
ER  -