Potential of using granite waste as raw material for geopolymer synthesis

Tchadjié, Léonel N.; Djobo, Jean Noël Yankwa; Ranjbar, Navid; Tchakouté, Hervé K.; Kenne, B.B.D.; Elimbi, A.; Njopwouo, D.

doi:10.1016/j.ceramint.2015.10.091

Cited by 167 publications

(61 citation statements)

References 36 publications

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“…This value is nearly 33.2 MPa obtained by Tchadjié et al (2016). In that study, rice husk ash was used as silica source to prepare hardener which was used to synthesize of metakaolin-based geopolymer cement.…”

Section: Characterization Of Metakaolin-based Geopolymer Cementsmentioning

confidence: 98%

Utilization of sodium waterglass from sugar cane bagasse ash as a new alternative hardener for producing metakaolin-based geopolymer cement

et al. 2017

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Section: Characterization Of Metakaolin-based Geopolymer Cementsmentioning

confidence: 98%

Utilization of sodium waterglass from sugar cane bagasse ash as a new alternative hardener for producing metakaolin-based geopolymer cement

et al. 2017

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Section: Compressive Strengthmentioning

confidence: 99%

“…The water resistance of geopolymer cement has been defined as one of the key tests for assessing the use of this material [19]. Tchadjié et al [19] attempted to investigate the water resistance of geopolymer mortars from granite waste as aluminosilicate source. They reported that the compressive strengths of some specimens cured at room temperature during 28 days were about 21.25 and 40 MPa, but after soaking in water, they observed the formation of cracks and meanwhile, the other crumble within 48 h of immersion period.…”

Section: Compressive Strengthmentioning

confidence: 99%

“…The mechanical and microstructural properties of the metakaolin-phosphate-based geopolymer cements have already been conducted yielding suitable properties [8][9][10][11][12]. The water resistance of alkaline-based geopolymers using granite waste as an aluminosilicate source was studied by Tchadjié et al [19]. They reported that water affected negatively the compressive strength of the granite-based geopolymer cements.…”

Section: Introductionmentioning

confidence: 99%

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Water resistance and thermal behavior of metakaolin-phosphate-based geopolymer cements

Bewa

Tchakouté

Fotio

et al. 2018

Journal of Asian Ceramic Societies

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The main target of this work was to investigate the thermal behavior and water resistance of geopolymer cement made from metakaolin as an aluminosilicate source using phosphoric acid solution (10 M) as a hardener. The obtained geopolymer cements were cured at room temperature for 28 days, the one part was treated at 200°C, 400°C, 600°C, 800°C and 1000°C, and the others were soaked in water for 28 days. The geopolymer cements were characterized by microstructural properties using X-ray diffractometry, infrared spectroscopy, microstructure, physical property based on water resistance and thermo-mechanical properties (thermal analysis, compressive strength). The results show that the compressive strength of the unheated geopolymer cement was 87.96 MPa. The ones soaked in water revealed a strength of 40.71 MPa. This indicates that the specimens soaked in water lose about 54% of their strengths. The X-ray patterns of heated geopolymer cements showed the formation of crystalline phases even at relatively low temperatures. It was typically found that the compressive strength of metakaolin-phosphate-based geopolymer cements decreases due to the hydrolysis of Si-O-P bonds in the presence of water. ARTICLE HISTORY

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“…Many previous works have reported the formation of geopolymer materials from calcined clays [9] [10], granulated blast furnace slag and fly ash as industrial by-products or wastes [11] [12], volcanic ashes [13] [14] [15], ground perlite [16], ground aplite rock [17], granite waste [18], Taftan and esite and Shahindej [19], alkali-feldspars [20] [21], a pumice-type natural pozzolan [22], basaltic ash [23].…”

Section: Introductionmentioning

confidence: 99%

Preliminary Study of Alkali Activation of Basalt: Effect of NaOH Concentration on Geopolymerization of Basalt

Saraya¹,

El-Fadaly²

2017

MSCE

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The main objective of this study is to examine the possibility of using fresh basalt powder in the preparation of geopolymer pastes. Four NaOH concentrations of 2.5, 5, 7.5 and 10 M were used to alkali activation of basalt. In addition, effect of curing temperature at ambient, 45˚C and 65˚C were studied. The geopolymer pastes were investigated using FTIR, XRD and SEM-EDS techniques as well as compressive strength up to 90 days. The results were shown the compressive strength of prepared geopolymer increased with concentration of alkali activator up to 90 days. On the other hand, the compressive strength of prepared geopolymer pastes were improved with increased curing temperature. The results showed that there was a change in the chemical and mineral structure, due to the reaction of the sodium hydroxide with the different minerals of the basalt. In addition, the Na/Al and Si/Al ratios were completely different from that of the raw basalt. The geopolymerization reactions occurred at the surface basalt and the unreacted basalt particles actually play a supporting role in the geopolymer properties.

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Potential of using granite waste as raw material for geopolymer synthesis

Cited by 167 publications

References 36 publications

Utilization of sodium waterglass from sugar cane bagasse ash as a new alternative hardener for producing metakaolin-based geopolymer cement

Utilization of sodium waterglass from sugar cane bagasse ash as a new alternative hardener for producing metakaolin-based geopolymer cement

Water resistance and thermal behavior of metakaolin-phosphate-based geopolymer cements

Preliminary Study of Alkali Activation of Basalt: Effect of NaOH Concentration on Geopolymerization of Basalt

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