Reaction of Portland cement clinker with gaseous SO2 to form alite-ye'elimite clinker

Suhua Ma; Dashun Ge; Weifeng Li; Yueyang Hu; Zhiqiang Xu; Xiaodong Shen

doi:10.1016/j.cemconres.2018.11.021

Reaction of Portland cement clinker with gaseous SO₂ to form alite-ye'elimite clinker

Suhua Ma, Dashun Ge, Weifeng Li, Yueyang Hu, Zhiqiang Xu, Xiaodong Shen

College of Materials Science and Engineering

Nanjing Tech University

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

11 Scopus citations

Abstract

In this paper, an innovative method was proposed to synthesize an alite-ye'elimite clinker by adopting a secondary heat treatment step in a different sintering atmosphere after a traditional Portland cement (PC) clinker has been heated up at 1450 °C. It was found that a pure gaseous SO₂ or mixed gas containing the gaseous SO₂ used facilitated the decomposition of C₃S and the consumption of C₃A in the PC clinker. Simultaneously, anhydrite (CaSO₄), ye'elimite (3CaO·3Al₂O₃·CaSO₄, C₄A₃$) and ternesite (4CaO·2SiO₂·CaSO₄, C₅S₂$) coexisted in the alite-ye'elimite clinker, resulting from gas-solid reactions during sintering. The experimental results also showed that the compressive strength of the synthesized alite-ye'elimite cement was higher than that of PC. Moreover, its setting times were shorter than that of PC.

Original language	English
Pages (from-to)	299-308
Number of pages	10
Journal	Cement and Concrete Research
Volume	116
DOIs	https://doi.org/10.1016/j.cemconres.2018.11.021
State	Published - Feb 2019

Keywords

Alite
Gas-solid reaction
Hydration
Ye'elimite

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10.1016/j.cemconres.2018.11.021

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title = "Reaction of Portland cement clinker with gaseous SO2 to form alite-ye'elimite clinker",

abstract = "In this paper, an innovative method was proposed to synthesize an alite-ye'elimite clinker by adopting a secondary heat treatment step in a different sintering atmosphere after a traditional Portland cement (PC) clinker has been heated up at 1450 °C. It was found that a pure gaseous SO2 or mixed gas containing the gaseous SO2 used facilitated the decomposition of C3S and the consumption of C3A in the PC clinker. Simultaneously, anhydrite (CaSO4), ye'elimite (3CaO·3Al2O3·CaSO4, C4A3$) and ternesite (4CaO·2SiO2·CaSO4, C5S2$) coexisted in the alite-ye'elimite clinker, resulting from gas-solid reactions during sintering. The experimental results also showed that the compressive strength of the synthesized alite-ye'elimite cement was higher than that of PC. Moreover, its setting times were shorter than that of PC.",

keywords = "Alite, Gas-solid reaction, Hydration, Ye'elimite",

author = "Suhua Ma and Dashun Ge and Weifeng Li and Yueyang Hu and Zhiqiang Xu and Xiaodong Shen",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2019",

month = feb,

doi = "10.1016/j.cemconres.2018.11.021",

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T1 - Reaction of Portland cement clinker with gaseous SO2 to form alite-ye'elimite clinker

AU - Ma, Suhua

AU - Ge, Dashun

AU - Li, Weifeng

AU - Hu, Yueyang

AU - Xu, Zhiqiang

AU - Shen, Xiaodong

PY - 2019/2

Y1 - 2019/2

N2 - In this paper, an innovative method was proposed to synthesize an alite-ye'elimite clinker by adopting a secondary heat treatment step in a different sintering atmosphere after a traditional Portland cement (PC) clinker has been heated up at 1450 °C. It was found that a pure gaseous SO2 or mixed gas containing the gaseous SO2 used facilitated the decomposition of C3S and the consumption of C3A in the PC clinker. Simultaneously, anhydrite (CaSO4), ye'elimite (3CaO·3Al2O3·CaSO4, C4A3$) and ternesite (4CaO·2SiO2·CaSO4, C5S2$) coexisted in the alite-ye'elimite clinker, resulting from gas-solid reactions during sintering. The experimental results also showed that the compressive strength of the synthesized alite-ye'elimite cement was higher than that of PC. Moreover, its setting times were shorter than that of PC.

AB - In this paper, an innovative method was proposed to synthesize an alite-ye'elimite clinker by adopting a secondary heat treatment step in a different sintering atmosphere after a traditional Portland cement (PC) clinker has been heated up at 1450 °C. It was found that a pure gaseous SO2 or mixed gas containing the gaseous SO2 used facilitated the decomposition of C3S and the consumption of C3A in the PC clinker. Simultaneously, anhydrite (CaSO4), ye'elimite (3CaO·3Al2O3·CaSO4, C4A3$) and ternesite (4CaO·2SiO2·CaSO4, C5S2$) coexisted in the alite-ye'elimite clinker, resulting from gas-solid reactions during sintering. The experimental results also showed that the compressive strength of the synthesized alite-ye'elimite cement was higher than that of PC. Moreover, its setting times were shorter than that of PC.

KW - Alite

KW - Gas-solid reaction

KW - Hydration

KW - Ye'elimite

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U2 - 10.1016/j.cemconres.2018.11.021

DO - 10.1016/j.cemconres.2018.11.021

M3 - 文章

AN - SCOPUS:85058413999

SN - 0008-8846

VL - 116

SP - 299

EP - 308

JO - Cement and Concrete Research

JF - Cement and Concrete Research

ER -

Reaction of Portland cement clinker with gaseous SO₂ to form alite-ye'elimite clinker

Abstract

Keywords

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