Influence of sodium gluconate on the performance and hydration of Portland cement

Suhua Ma; Weifeng Li; Shenbiao Zhang; Dashun Ge; Jin Yu; Xiaodong Shen

doi:10.1016/j.conbuildmat.2015.05.068

Influence of sodium gluconate on the performance and hydration of Portland cement

Suhua Ma, Weifeng Li, Shenbiao Zhang, Dashun Ge, Jin Yu, Xiaodong Shen

College of Materials Science and Engineering

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

96 Scopus citations

Abstract

Sodium gluconate is commonly used to delay the setting of cement and concrete. This study investigated the effects of sodium gluconate on the physical properties and structure of Portland cement. Sodium gluconate improved the compressive strength at 3 and 28 days, delayed cement setting and increased the fluidity of the Portland cement mortar. Less than 0.03% sodium gluconate promoted the formation of ettringite (AFt) at early age. A dosage of 1.0% sodium gluconate significantly inhibited the reaction between C₃A and CaSO₄·2H₂O. Sodium gluconate delayed the hydration reaction of C₃S, which increased the duration of the induction period. Sodium gluconate had only a slight effect on the hydration reaction of the ferrite phase. The pore distribution and porosity of the cement paste were not improved due to the decrease in hydration.

Original language	English
Pages (from-to)	138-144
Number of pages	7
Journal	Construction and Building Materials
Volume	91
DOIs	https://doi.org/10.1016/j.conbuildmat.2015.05.068
State	Published - 1 May 2015

Keywords

Physical properties
Portland cement
Sodium gluconate
Structure development

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10.1016/j.conbuildmat.2015.05.068

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title = "Influence of sodium gluconate on the performance and hydration of Portland cement",

abstract = "Sodium gluconate is commonly used to delay the setting of cement and concrete. This study investigated the effects of sodium gluconate on the physical properties and structure of Portland cement. Sodium gluconate improved the compressive strength at 3 and 28 days, delayed cement setting and increased the fluidity of the Portland cement mortar. Less than 0.03% sodium gluconate promoted the formation of ettringite (AFt) at early age. A dosage of 1.0% sodium gluconate significantly inhibited the reaction between C3A and CaSO4·2H2O. Sodium gluconate delayed the hydration reaction of C3S, which increased the duration of the induction period. Sodium gluconate had only a slight effect on the hydration reaction of the ferrite phase. The pore distribution and porosity of the cement paste were not improved due to the decrease in hydration.",

keywords = "Physical properties, Portland cement, Sodium gluconate, Structure development",

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T1 - Influence of sodium gluconate on the performance and hydration of Portland cement

AU - Ma, Suhua

AU - Li, Weifeng

AU - Zhang, Shenbiao

AU - Ge, Dashun

AU - Yu, Jin

AU - Shen, Xiaodong

PY - 2015/5/1

Y1 - 2015/5/1

N2 - Sodium gluconate is commonly used to delay the setting of cement and concrete. This study investigated the effects of sodium gluconate on the physical properties and structure of Portland cement. Sodium gluconate improved the compressive strength at 3 and 28 days, delayed cement setting and increased the fluidity of the Portland cement mortar. Less than 0.03% sodium gluconate promoted the formation of ettringite (AFt) at early age. A dosage of 1.0% sodium gluconate significantly inhibited the reaction between C3A and CaSO4·2H2O. Sodium gluconate delayed the hydration reaction of C3S, which increased the duration of the induction period. Sodium gluconate had only a slight effect on the hydration reaction of the ferrite phase. The pore distribution and porosity of the cement paste were not improved due to the decrease in hydration.

AB - Sodium gluconate is commonly used to delay the setting of cement and concrete. This study investigated the effects of sodium gluconate on the physical properties and structure of Portland cement. Sodium gluconate improved the compressive strength at 3 and 28 days, delayed cement setting and increased the fluidity of the Portland cement mortar. Less than 0.03% sodium gluconate promoted the formation of ettringite (AFt) at early age. A dosage of 1.0% sodium gluconate significantly inhibited the reaction between C3A and CaSO4·2H2O. Sodium gluconate delayed the hydration reaction of C3S, which increased the duration of the induction period. Sodium gluconate had only a slight effect on the hydration reaction of the ferrite phase. The pore distribution and porosity of the cement paste were not improved due to the decrease in hydration.

KW - Physical properties

KW - Portland cement

KW - Sodium gluconate

KW - Structure development

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DO - 10.1016/j.conbuildmat.2015.05.068

M3 - 文章

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SN - 0950-0618

VL - 91

SP - 138

EP - 144

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Influence of sodium gluconate on the performance and hydration of Portland cement

Abstract

Keywords

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