The influence of sodium hydrogen carbonate on the hydration of cement

J. G. Jang; H. J. Kim; S. M. Park; H. K. Lee

doi:10.1016/j.conbuildmat.2015.07.121

The influence of sodium hydrogen carbonate on the hydration of cement

J. G. Jang
, H. J. Kim
, S. M. Park
, H. K. Lee

Korea Advanced Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

Abstract The presence of Ca(OH)₂ may adversely influence resistance to sulfates, while its absence reduces the pH, leading to corrosion of the steel in reinforced concrete. Test results of the present study showed that adding NaHCO₃ allowed carbonation to occur uniformly within the cement paste, resulting in the consumption of Ca(OH)₂. Despite the consumption of Ca(OH)₂, the pH was found to increase by production of NaOH. Strength test results showed that an addition of NaHCO₃ of less than 5% enhanced the strength, but that exceeding 5% had an adverse effect. The results here provide new insight into potential means to improve the durability of concrete.

Original language	English
Article number	6936
Pages (from-to)	746-749
Number of pages	4
Journal	Construction and Building Materials
Volume	94
DOIs	https://doi.org/10.1016/j.conbuildmat.2015.07.121
State	Published - 21 Jul 2015
Externally published	Yes

Keywords

Carbonation
Cement
Durability
pH
Sodium hydrogen carbonate
Strength

Access to Document

10.1016/j.conbuildmat.2015.07.121

Cite this

@article{96691758c9cd4b25a3eb8abc828906ec,

title = "The influence of sodium hydrogen carbonate on the hydration of cement",

abstract = "Abstract The presence of Ca(OH)2 may adversely influence resistance to sulfates, while its absence reduces the pH, leading to corrosion of the steel in reinforced concrete. Test results of the present study showed that adding NaHCO3 allowed carbonation to occur uniformly within the cement paste, resulting in the consumption of Ca(OH)2. Despite the consumption of Ca(OH)2, the pH was found to increase by production of NaOH. Strength test results showed that an addition of NaHCO3 of less than 5\% enhanced the strength, but that exceeding 5\% had an adverse effect. The results here provide new insight into potential means to improve the durability of concrete.",

keywords = "Carbonation, Cement, Durability, pH, Sodium hydrogen carbonate, Strength",

author = "Jang, \{J. G.\} and Kim, \{H. J.\} and Park, \{S. M.\} and Lee, \{H. K.\}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2015",

month = jul,

day = "21",

doi = "10.1016/j.conbuildmat.2015.07.121",

language = "English",

volume = "94",

pages = "746--749",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - The influence of sodium hydrogen carbonate on the hydration of cement

AU - Jang, J. G.

AU - Kim, H. J.

AU - Park, S. M.

AU - Lee, H. K.

PY - 2015/7/21

Y1 - 2015/7/21

N2 - Abstract The presence of Ca(OH)2 may adversely influence resistance to sulfates, while its absence reduces the pH, leading to corrosion of the steel in reinforced concrete. Test results of the present study showed that adding NaHCO3 allowed carbonation to occur uniformly within the cement paste, resulting in the consumption of Ca(OH)2. Despite the consumption of Ca(OH)2, the pH was found to increase by production of NaOH. Strength test results showed that an addition of NaHCO3 of less than 5% enhanced the strength, but that exceeding 5% had an adverse effect. The results here provide new insight into potential means to improve the durability of concrete.

AB - Abstract The presence of Ca(OH)2 may adversely influence resistance to sulfates, while its absence reduces the pH, leading to corrosion of the steel in reinforced concrete. Test results of the present study showed that adding NaHCO3 allowed carbonation to occur uniformly within the cement paste, resulting in the consumption of Ca(OH)2. Despite the consumption of Ca(OH)2, the pH was found to increase by production of NaOH. Strength test results showed that an addition of NaHCO3 of less than 5% enhanced the strength, but that exceeding 5% had an adverse effect. The results here provide new insight into potential means to improve the durability of concrete.

KW - Carbonation

KW - Cement

KW - Durability

KW - pH

KW - Sodium hydrogen carbonate

KW - Strength

UR - https://www.scopus.com/pages/publications/84937579123

U2 - 10.1016/j.conbuildmat.2015.07.121

DO - 10.1016/j.conbuildmat.2015.07.121

M3 - Article

AN - SCOPUS:84937579123

SN - 0950-0618

VL - 94

SP - 746

EP - 749

JO - Construction and Building Materials

JF - Construction and Building Materials

M1 - 6936

ER -

The influence of sodium hydrogen carbonate on the hydration of cement

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this