Investigation of Groundnut Shell Powder on Development of Lightweight Metakaolin Based Geopolymer Composite: Mechanical and Microstructural Properties

Nemaleu, Juvenal Giogetti Deutou; Djaoyang, Viviane Bakaine; Alim, Bilkissou; Kaze, Cyriaque Rodigue; Boum, Raphaël Belinga Essama; Djobo, Jean Noël Yankwa; Lemougna, Patrick N.; Kamseu, Elie

doi:10.1007/s12633-020-00829-z

Cited by 19 publications

(5 citation statements)

References 43 publications

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“…In addition, increasing the calcination temperature from 25°C to 750°C in the present study increases the formation of amorphous phase content requires for the geopolymer synthesis as reported by others on different clays used as solid precursors [20,27]. The presence of halo between 15° and 30°2 Theta range indicates the formation of amorphous phase after calcination which has been identi ed by other researchers [28, 30,31].…”

Section: Characterization Of Raw Materialssupporting

confidence: 77%

Influence of Thermal Activation and Silica Modulus on the Properties of Clayey-Lateritic Based Geopolymer Binders Cured at Room Temperature

Metekong

Kaze

Adesina

et al. 2022

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The growing demand and use of geopolymer binders have been of high interest in recent times due to their sustainability and economic bene ts. However, locally available materials must be used in the production of geopolymer binders in order to maximize their bene ts. In this study, a laterite soil which is a locally available material in many parts of the world was used as the aluminosilicate precursor. In order to produce the geopolymer binders, the laterite soil was activated thermally through calcination and the resulting calcined laterite was activated with an alkali activator composed of sodium hydroxide (NaOH) and sodium silicate (Na 2 SiO 3 ). The in uence of calcination temperature and the concentration of NaOH on the properties of the developed geopolymers was investigated. Calcination temperature used ranged between 550 °C to 750 °C and the NaOH concentrations used were 8 M and 10 M. The results from this study indicate that some locally available laterite soils can be utilized in the production of geopolymer binders if they undergo calcination. Increasing the calcination temperature from 550 °C to 750 °C resulted in the transformation of phases and an increase in the reactivity of the laterites, resulting in material with improved properties. The use of laterite calcined at 750 °C and activated with 8 M NaOH solution resulted to an increase in the 28 days compressive strength by 35.3 MPa compared to when laterite calcined at 550 °C was used. Increasing the concentration of the NaOH solution was also found to yield higher material performance. Microstructural investigations were also carried out to con rm the macrostructural properties.

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Section: Characterization Of Raw Materialssupporting

confidence: 77%

Influence of Thermal Activation and Silica Modulus on the Properties of Clayey-Lateritic Based Geopolymer Binders Cured at Room Temperature

Metekong

Kaze

Adesina

et al. 2022

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“…The bands at 798, 745, 791, 753, 793, and 750 cm −1 are assigned to symmetric stretching (Si–O–Si and Al–O–Si) bonds (Figure 1A–C). 36–38 Those around 684, 638, 679, 643, 677, and 640 cm −1 correspond to symmetric stretching (Si–O–Si) bonds belonging to quartz mineral 36 . Finally, the last bands appearing at 526, 461, 417, 458, 524, and 413 cm −1 are attributed to symmetric stretching (Al–O–Si) and bending (Si–O–Si and O–Si–O), and vibration mode of Fe–O bonds, respectively 39 …”

Section: Resultsmentioning

confidence: 97%

“…29,31,34,35 The bands at 798, 745, 791, 753, 793, and 750 cm −1 are assigned to symmetric stretching (Si-O-Si and Al-O-Si) bonds (Figure 1A-C). [36][37][38] Those around 684, 638, 679, 643, 677, and 640 cm −1 correspond to symmetric stretching (Si-O-Si) bonds belonging quartz mineral. 36 Finally, the last bands appearing at 526, 461, 417, 458, 524, and 413 cm 28 days.…”

Section: Ftir and Xrd Of Lateritementioning

confidence: 99%

Feasibility of production fired bricks based lateritic soil at very low temperature

Sontia Metekong,

Kaze,

Kamseu

et al. 2024

Int J Ceramic Engine & Sci

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The present project deals with the production of lateritic soil based bricks under different curing temperatures (28°C–150°C). A fraction of 10–30 wt% amount alkaline solution was added to improve the reactive phase content. The raw materials and hardened products were characterized using X‐ray diffraction (XRD), fourrier transform infrared spectroscopy (FTIR), mechanical properties and scanning electron microscope analysis. The results show that the addition of alkaline solution (30%) and the curing temperature (150°C) have a beneficial influence on physical properties (bulk density: 1.77 g/cm3, water absorption: 16.98%, and porosity: 30.13%) and mechanical performances (flexural: 6.61 MPa and compressive: 13.57 MPa). Compared with the code requirements for stabilized earth blocks, the compressive strength was higher than the minimum required. Microstructural investigations were also carried out to confirm the macrostructural properties. The above‐mentioned process appears to be a suitable candidate for engineering applications such as the stabilization of earth roads.

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“…The literature shows that the incorporation of similar waste materials in unfired clay bricks has a deterioration effect on their mechanical strength [36,37]. Bricks incorporating Argan shell are characterized by the same behavior of a decrease in compressive strength [23].…”

Section: Resultsmentioning

confidence: 99%

Viscoelastic Measurements of Clay Suspensions and their Relationship to Strength of Unfired Clay Bricks with Almond Husk Additive

Noureddine

Manssouri

Cherkaoui

et al. 2022

JERA

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Engineered unfired clay bricks are an ecological alternative to overcome conventional construction materials’ inconvenience. This work investigates the rheological behavior of organo-silica suspensions, made from almond husk waste and illite clay, in relation to the compressive strength of unfired clay bricks incorporating the same waste. Selected proportions by weight of almond husk are 2, 5, 10, and 20 wt.%. Results from the compressive strength test show an improvement, of 8.98% in bricks with 2 wt.% waste content compared to the control sample, thanks to an increase in friction and the fiber bridging mechanism. Then, a progressively decrease in strength is recorded with the addition of waste. The decrease in strength is reported to be the creation of pores in the matrix, and loss of cohesion. It is found that the storage modulus, on a logarithmic scale, follows inversely the same trend of the compressive strength in previously prepared bricks. The results from the strength test and rheological test are linearly correlated. Strong coefficients of determination are found; R2=0.9809 (with 40 wt.% water content) and R2=0.9206 (with 50 wt.% water content). The findings from this study demonstrate the possibility of assessment and prediction of unfired bricks’ strength using rheometry.

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Investigation of Groundnut Shell Powder on Development of Lightweight Metakaolin Based Geopolymer Composite: Mechanical and Microstructural Properties

Cited by 19 publications

References 43 publications

Influence of Thermal Activation and Silica Modulus on the Properties of Clayey-Lateritic Based Geopolymer Binders Cured at Room Temperature

Influence of Thermal Activation and Silica Modulus on the Properties of Clayey-Lateritic Based Geopolymer Binders Cured at Room Temperature

Feasibility of production fired bricks based lateritic soil at very low temperature

Viscoelastic Measurements of Clay Suspensions and their Relationship to Strength of Unfired Clay Bricks with Almond Husk Additive

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