Study on the physical and chemical properties of Portland cement with THEED

Suhua Ma; Weifeng Li; Xiaodong Shen

doi:10.1016/j.conbuildmat.2019.03.109

Study on the physical and chemical properties of Portland cement with THEED

Suhua Ma, Weifeng Li, Xiaodong Shen

College of Materials Science and Engineering

Nanjing Tech University

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

21 Scopus citations

Abstract

N,N,N’,N’-Tetrakis-(2-hydroxyethyl)ethylenediamine (C ₁₀ H ₂₄ N ₂ O ₄ ,THEED) is a different type of alkanolamine. In this work, the physical and chemical effects of small amounts of THEED added to Portland cement were investigated. THEED can be used as an accelerator for the setting of Portland cement. The compressive strengths of standard test mortars moist-cured for 1, 3, 28 and 90 days were enhanced in some cases by the addition of THEED. THEED promoted conversion of ettringite (AFt) to monosulfoaluminate (AFm). THEED had notable effects on the morphology of AFt and C-S-H at the early age, especially on the growth direction of portlandite(Ca(OH) ₂ ) crystals.

Original language	English
Pages (from-to)	617-626
Number of pages	10
Journal	Construction and Building Materials
Volume	213
DOIs	https://doi.org/10.1016/j.conbuildmat.2019.03.109
State	Published - 20 Jul 2019

Keywords

Hydration kinetics
Microstructure
Physical properties
Portland cement
THEED

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10.1016/j.conbuildmat.2019.03.109

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title = "Study on the physical and chemical properties of Portland cement with THEED",

abstract = " N,N,N{\textquoteright},N{\textquoteright}-Tetrakis-(2-hydroxyethyl)ethylenediamine (C 10 H 24 N 2 O 4 ,THEED) is a different type of alkanolamine. In this work, the physical and chemical effects of small amounts of THEED added to Portland cement were investigated. THEED can be used as an accelerator for the setting of Portland cement. The compressive strengths of standard test mortars moist-cured for 1, 3, 28 and 90 days were enhanced in some cases by the addition of THEED. THEED promoted conversion of ettringite (AFt) to monosulfoaluminate (AFm). THEED had notable effects on the morphology of AFt and C-S-H at the early age, especially on the growth direction of portlandite(Ca(OH) 2 ) crystals.",

keywords = "Hydration kinetics, Microstructure, Physical properties, Portland cement, THEED",

author = "Suhua Ma and Weifeng Li and Xiaodong Shen",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = jul,

day = "20",

doi = "10.1016/j.conbuildmat.2019.03.109",

language = "英语",

volume = "213",

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journal = "Construction and Building Materials",

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TY - JOUR

T1 - Study on the physical and chemical properties of Portland cement with THEED

AU - Ma, Suhua

AU - Li, Weifeng

AU - Shen, Xiaodong

PY - 2019/7/20

Y1 - 2019/7/20

N2 - N,N,N’,N’-Tetrakis-(2-hydroxyethyl)ethylenediamine (C 10 H 24 N 2 O 4 ,THEED) is a different type of alkanolamine. In this work, the physical and chemical effects of small amounts of THEED added to Portland cement were investigated. THEED can be used as an accelerator for the setting of Portland cement. The compressive strengths of standard test mortars moist-cured for 1, 3, 28 and 90 days were enhanced in some cases by the addition of THEED. THEED promoted conversion of ettringite (AFt) to monosulfoaluminate (AFm). THEED had notable effects on the morphology of AFt and C-S-H at the early age, especially on the growth direction of portlandite(Ca(OH) 2 ) crystals.

AB - N,N,N’,N’-Tetrakis-(2-hydroxyethyl)ethylenediamine (C 10 H 24 N 2 O 4 ,THEED) is a different type of alkanolamine. In this work, the physical and chemical effects of small amounts of THEED added to Portland cement were investigated. THEED can be used as an accelerator for the setting of Portland cement. The compressive strengths of standard test mortars moist-cured for 1, 3, 28 and 90 days were enhanced in some cases by the addition of THEED. THEED promoted conversion of ettringite (AFt) to monosulfoaluminate (AFm). THEED had notable effects on the morphology of AFt and C-S-H at the early age, especially on the growth direction of portlandite(Ca(OH) 2 ) crystals.

KW - Hydration kinetics

KW - Microstructure

KW - Physical properties

KW - Portland cement

KW - THEED

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U2 - 10.1016/j.conbuildmat.2019.03.109

DO - 10.1016/j.conbuildmat.2019.03.109

M3 - 文章

AN - SCOPUS:85064312790

SN - 0950-0618

VL - 213

SP - 617

EP - 626

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Study on the physical and chemical properties of Portland cement with THEED

Abstract

Keywords

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