Ceramics International

, volume 42 , issue 13 , pages 14416-14422

Effects of Si/Al ratio on the structure and properties of metakaolin based geopolymer

He P. ¹

Mei-Rong Wang ²

Shuai Fu ¹

Dechang Jia ¹

Shu Yan ¹

Jingkun Yuan ¹

Jiahuan Xu ³

Pengfei Wang ⁴

Yu Zhou ¹

Hide authors affiliations Show authors affiliations: 4 affiliations

Institute for Advanced Ceramics Harbin Institute of Technology Harbin China |

School of Materials Science and Engineering, Harbin Institute of Technology, Weihai, China |

School of Mathematics and Physics, Jiangsu University of Science and Technology, Zhenjiang, China |

⁴

CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of science and technology of China, Hefei, China |

Publication type: Journal Article

Publication date: 2016-10-01

Elsevier

Ceramics International

scimago Q1

wos Q1

SJR: 1.034

CiteScore: 9.1

Impact factor: 5.6

ISSN: 02728842, 18733956

DOI: 10.1016/j.ceramint.2016.06.033

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Materials Chemistry

Surfaces, Coatings and Films

Ceramics and Composites

Electronic, Optical and Magnetic Materials

Process Chemistry and Technology

Abstract

Geopolymer with Si/Al ratios from 2 to 4 were prepared by adding different contents of fused silica into geopolymer matrix. Effects of Si/Al ratios on the structure, mechanical properties and chemical stability in air of the obtained geopolymer were systematically investigated. The results showed that all the geopolymer samples were XRD amorphous. Geopolymer with Si/Al ratios of 2 and 2.5 showed similar structure and property and they were classed as KGP-I; and geopolymer with Si/Al ratios of 3, 3.5 and 4 were similar and they were class as KGP-II. In alkaline solution, reactivity of fused silica were higher than that of metakaolin, resulting in higher content of both residual metakaolin and free alkaline cation in KGP-II than in KGP-I. Fused silica partially reacted with the alkaline solution in KGP-II indicating chemical interfacial bonding between silica and binder phase. With the increase in Si/Al ratios, KGP-II especially for geopolymer with Si/Al of 4 showed much higher mechanical properties than KGP-I due to the increased Si-O-Si bonds and residual silica as reinforcement. However, KGP-II showed worse chemical stability in air than KGP-I, with the presence of efflorescence on the surface, which was attributed to their higher residual free K+.

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Katholieke Universiteit Leuven

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P. H. et al. Effects of Si/Al ratio on the structure and properties of metakaolin based geopolymer // Ceramics International. 2016. Vol. 42. No. 13. pp. 14416-14422.

GOST all authors (up to 50) Copy

P. H., Wang M., Fu S., Jia D., Yan S., Yuan J., Xu J., Wang P., Zhou Yu. Effects of Si/Al ratio on the structure and properties of metakaolin based geopolymer // Ceramics International. 2016. Vol. 42. No. 13. pp. 14416-14422.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1016/j.ceramint.2016.06.033

UR - https://doi.org/10.1016/j.ceramint.2016.06.033

TI - Effects of Si/Al ratio on the structure and properties of metakaolin based geopolymer

T2 - Ceramics International

AU - P., He

AU - Wang, Mei-Rong

AU - Fu, Shuai

AU - Jia, Dechang

AU - Yan, Shu

AU - Yuan, Jingkun

AU - Xu, Jiahuan

AU - Wang, Pengfei

AU - Zhou, Yu

PY - 2016

DA - 2016/10/01

PB - Elsevier

SP - 14416-14422

IS - 13

VL - 42

SN - 0272-8842

SN - 1873-3956

ER -

BibTex |

Cite this

BibTex (up to 50 authors) Copy

@article{2016_P.,

author = {He P. and Mei-Rong Wang and Shuai Fu and Dechang Jia and Shu Yan and Jingkun Yuan and Jiahuan Xu and Pengfei Wang and Yu Zhou},

title = {Effects of Si/Al ratio on the structure and properties of metakaolin based geopolymer},

journal = {Ceramics International},

year = {2016},

volume = {42},

publisher = {Elsevier},

month = {oct},

url = {https://doi.org/10.1016/j.ceramint.2016.06.033},

number = {13},

pages = {14416--14422},

doi = {10.1016/j.ceramint.2016.06.033}

}

MLA

Cite this

MLA Copy

P., He, et al. “Effects of Si/Al ratio on the structure and properties of metakaolin based geopolymer.” Ceramics International, vol. 42, no. 13, Oct. 2016, pp. 14416-14422. https://doi.org/10.1016/j.ceramint.2016.06.033.

Publisher

Elsevier

Journal

Ceramics International

scimago Q1

wos Q1

SJR

1.034

CiteScore

9.1

Impact factor

5.6

ISSN

02728842 (Print)

18733956