Influence of metakaolin purities on potassium geopolymer formulation: The existence of several networks

被引：107

作者：

Autef, A. ^{[1
]}

Joussein, E. ^{[2
]}

Poulesquen, A. ^{[3
]}

Gasgnier, G. ^{[4
]}

Pronier, S. ^{[5
]}

Sobrados, I. ^{[6
]}

Sanz, J. ^{[6
]}

Rossignol, S. ^{[1
]}

机构：

[1] Ecole Natl Super Ceram Ind, Grp Etud Mat Heterogenes, F-87068 Limoges, France

[2] Univ Limoges, GRESE EA 4330, F-87060 Limoges, France

[3] DTCD SPDE LCFI Marcoule, DEN, CEA, F-30207 Bagnols Sur Ceze, France

[4] Linerys Ceram Ctr, F-87000 Limoges, France

[5] Univ Poitiers, CNRS UMR 7285, Inst Chim Milieux & Mat Poitiers IC2MP, F-86022 Poitiers, France

[6] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2013年 / 408卷

关键词：

Geopolymer; Gel; TEM; Metakaolin; Reactivity; Formation mechanisms; SI-29; MAS-NMR; ALUMINOSILICATE GEOPOLYMERS; INORGANIC POLYMERS; THERMAL EVOLUTION; SILICA SOURCE; PART I; MICROSTRUCTURE; TEMPERATURE; STRENGTH; STATE;

D O I：

10.1016/j.jcis.2013.07.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Geopolymer materials are obtained by the alkaline activation of aluminosilicate sources, the best of which is metakaolin. However, every raw material is different, and very few comparative studies have been done on different metakaolin sources. The aim of this work is to develop methods for the prediction of the working properties of geopolymer materials based on the reactivity of the metakaolin employed. Infrared spectroscopy showed direct relationships between the wettability, the Si/Al ratio and the kinetics of conversion of Si-O-Si bonds to Si-O-Al bonds. Moreover, it was demonstrated that the presence of impurities and the reactivity of the metakaolin can generate the formation of one or several networks. Finally, a descriptive model of the mechanism of geopolymer formation was proposed that takes into account the quality of metakaolin used. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：43 / 53

页数：11

共 55 条

[1] Alkaline activation of metakaolin and calcium hydroxide mixtures: influence of temperature, activator concentration and solids ratio [J].

Alonso, S ;

Palomo, A .

MATERIALS LETTERS, 2001, 47 (1-2) :55-62

[2]

American Society for Testing and Materials (ASTM), 2017, ASTM D1633 Standard Test Methods for Compressive Strength of Molded Soil-Cement Cylinders

[3]

[Anonymous], J MAT CIVIL ENG ASCE

[4] Properties of blended cements with thermally activated kaolin [J].

Arikan, Metin ;

Sobolev, Konstantin ;

Ertuen, Tomris ;

Yeginobali, Asim ;

Turker, Pelin .

CONSTRUCTION AND BUILDING MATERIALS, 2009, 23 (01) :62-70

[5] Role of the silica source on the geopolymerization rate: A thermal analysis study [J].

Autef, A. ;

Joussein, E. ;

Gasgnier, G. ;

Rossignol, S. .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2013, 366 :13-21

[6] Role of the silica source on the geopolymerization rate [J].

Autef, A. ;

Joussein, E. ;

Gasgnier, G. ;

Rossignol, S. .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2012, 358 (21) :2886-2893

[7]

Autef A., EVIDENCE GE IN PRESS, DOI DOI 10.1007/S10971-013-3111-9

[8]

BACHIORRINI A, 1986, CR ACAD SCI II, V303, P1783

[9] Synthesis and thermal behaviour of potassium sialate geopolymers [J].

Barbosa, VFF ;

MacKenzie, KJD .

MATERIALS LETTERS, 2003, 57 (9-10) :1477-1482

[10] Formation of Ceramics from Metakaolin-Based Geopolymers. Part II: K-Based Geopolymer [J].

Bell, Jonathan L. ;

Driemeyer, Patrick E. ;

Kriven, Waltraud M. .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2009, 92 (03) :607-615

← 1 2 3 4 5 6 →