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Cited 6 time in webofscience Cited 7 time in scopus
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Investigating the Effects of Polyaluminum Chloride on the Properties of Ordinary Portland Cementopen access

Authors
Kim, TaewanKang, ChoonghyunHong, SungnamSeo, Ki-Young
Issue Date
Oct-2019
Publisher
MDPI
Keywords
polyaluminum chloride; ordinary portland cement; Friedel' s salt; chloride ion
Citation
MATERIALS, v.12, no.20
Indexed
SCIE
SCOPUS
Journal Title
MATERIALS
Volume
12
Number
20
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/8655
DOI
10.3390/ma12203290
ISSN
1996-1944
Abstract
This study investigates the mechanical and microstructural properties of paste comprising ordinary Portland cement (OPC) added with polyaluminum chloride (PACl). The properties of the resulting mixture are analyzed using compressive strength, X-ray diffraction, scanning electron microscopy (SEM), mercury intrusion porosimetry, and thermogravimetric analysis. The results show that the addition of PACl improves the mechanical properties of OPC paste, that calcium-(aluminum)-silicate-hydrate (C-(A)-S-H) gel and Friedel's salt are the major products forming from the reaction with the aluminum and chloride ions in PACl, and that the portlandite content decreases. Moreover, the size and number of micropores decrease, and compressive strength increases. All these phenomena are amplified by increasing PACl content. SEM images confirm these findings by revealing Friedel's salt in the micropores. Thus, this work confirms that adding PACl to OPC results in a mixture with superior mechanical and microstructural properties.
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