Formulation of Geopolymer Cements from Two Clays Containing Kaolinite and Muscovite: Effect of Temperature on the Physicomechanical Properties of the Products  

作　　者：Mamadou Yaya Balde Diaka Sidibe Éric Severin Simo Bakam Chantale Djangang Njiomou Philippe Blanchart Mamadou Yaya Balde;Diaka Sidibe;Éric Severin Simo Bakam;Chantale Djangang Njiomou;Philippe Blanchart(Laboratory of Applied Inorganic Chemistry, University of Yaoundé 1, Yaoundé, Cameroon;Laboratory of Physical and Colloidal Chemistry, Gamal Abdel Nasser University of Conakry, Conakry, Guinée;Center for Waste Management Research (CREGED), Conakry, Guinea;Higher Institute of Mines and Geology of Boké (ISMGB), Boké, Guinea;Institute of Research for Ceramics (IRCER), Limoges, France)

机构地区：[1]Laboratory of Applied Inorganic Chemistry, University of Yaoundé 1, Yaoundé, Cameroon [2]Laboratory of Physical and Colloidal Chemistry, Gamal Abdel Nasser University of Conakry, Conakry, Guinée [3]Center for Waste Management Research (CREGED), Conakry, Guinea [4]Higher Institute of Mines and Geology of Boké (ISMGB), Boké, Guinea [5]Institute of Research for Ceramics (IRCER), Limoges, France

出　　处：《Journal of Materials Science and Chemical Engineering》2023年第12期34-45,共12页材料科学与化学工程（英文）

摘　　要：The paper talks about the elaboration of geopolymer with two types of kaolinite clays containing muscovite. The kaolinite materials were first calcined at different temperatures, and mixed with an activator solution, called liquid precursor, at a different solid/liquid mass ratio depending on their normal consistency to produce geopolymer binders. Results show that the geopolymer products obtained from the different clays have good physichomechanical properties: their open porosity and their water absorption rate decrease while their compressive strength and their apparent density increase with the increase in calcination temperature of the clays. The density of GABD binders varies between 2.92 and 2.47 g/cm³ and that of GARD binders between 1.86 and 2.16 g/cm³. Specimens in the GABD series have the best mechanical performance, ranging from 14.43 to 31.37 MPa, while those in the GARD series oscillate between 6.18 and 11.56 MPa. These properties make kaolinite materials from this region suitable for use as construction materials for adequate waterproof structures.The paper talks about the elaboration of geopolymer with two types of kaolinite clays containing muscovite. The kaolinite materials were first calcined at different temperatures, and mixed with an activator solution, called liquid precursor, at a different solid/liquid mass ratio depending on their normal consistency to produce geopolymer binders. Results show that the geopolymer products obtained from the different clays have good physichomechanical properties: their open porosity and their water absorption rate decrease while their compressive strength and their apparent density increase with the increase in calcination temperature of the clays. The density of GABD binders varies between 2.92 and 2.47 g/cm³ and that of GARD binders between 1.86 and 2.16 g/cm³. Specimens in the GABD series have the best mechanical performance, ranging from 14.43 to 31.37 MPa, while those in the GARD series oscillate between 6.18 and 11.56 MPa. These properties make kaolinite materials from this region suitable for use as construction materials for adequate waterproof structures.

关 键 词：Geopolymer Cements Kaolinitic Clays MUSCOVITE PERMEABILITY Mechanical Strength 

分 类 号：O61[理学—无机化学]