Effect of natural graphite additions on the microstructural and mechanical behavior of metakaolin based geopolymer materials

被引：17

作者：

Nadi, M. ^{[1
]}

Allaoui, D. ^{[3
]}

Majdoubi, H. ^{[2
]}

Hamdane, H. ^{[1
]}

Haddaji, Y. ^{[1
]}

Mansouri, S. ^{[2
]}

Tamraoui, Y. ^{[2
]}

Manoun, B. ^{[2
,3
]}

Hannache, H. ^{[2
]}

Oumam, M. ^{[1
]}

机构：

[1] Hassan II Univ, Fac Sci Ben MSik, Lab Engn & Mat LIMAT, Bd Commandant Driss Al Harti, Casablanca 20670, Morocco

[2] Mohammed VI Polytech Univ, Mat Sci & Nanoengn Dept, Lot 660, Ben Guerir 43150, Morocco

[3] Univ Hassan 1er, Lab Rayonnement Matiere & Instrumentat RMI, FST Settat, Settat, Morocco

来源：

JOURNAL OF BUILDING ENGINEERING | 2023年 / 78卷

关键词：

Geopolymer; Natural graphite; Mechanical properties; Microstructural properties; QUANTITATIVE-ANALYSIS; STRENGTH; CALCITE; MORTAR;

D O I：

10.1016/j.jobe.2023.107562

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This investigation aims to develop a metakaolin (MK) based geopolymer composite reinforced with natural graphite (NG). The microstructural, mechanical, and physical properties of geopolymer composites were evaluated in relation to the NG addition (0-70 wt%). Several methods including XRD, FTIR, TGA, SEM/EDS, compressive strength and setting time were applied to investigate the influence of NG inclusion on the MK-based geopolymer matrix. According to the results, the microstructural characterization revealed that the graphite sheets are integrated in the geopolymer network and that the amount of carbon rises with the progressive NG additions while having a substantial influence on the densification of the geopolymer composites. The mechanical parameters of the elaborated geopolymer composite indicated that the optimal amount of NG is 30 wt%, which boosts the compressive strength by 49% above the reference composite based on the high mechanical properties of graphite. The use of NG for optimal mix proportion extended the setting time of the geopolymer composite paste by 663 min as compared to the reference geopolymer paste. These findings demonstrated that the developed geopolymer composite offers an economic and environmental potential in several potential fields.

引用

页数：12

共 59 条

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