The influence of nano CaCO3 on the mechanical performance of micro glass-reinforced geopolymer paste

被引：9

作者：

Alomayri T. ^{[1
]}

Adesina A. ^{[2
]}

机构：

[1] Department of Physics, Faculty of Applied Science, Umm Al- Qura University, P.O. Box 715, Makkah

[2] Department of Civil and Environmental Engineering, University of Windsor, Windsor

来源：

Arabian Journal of Geosciences | 2021年 / 14卷 / 14期

关键词：

Fracture toughness; Geopolymer; Mechanical performance; Micro-glass fibre; Microstructure; Nano CaCO[!sub]3[!/sub;

D O I：

10.1007/s12517-021-07839-0

中图分类号：

学科分类号：

摘要：

This current study is part of a comprehensive study being undertaken to evaluate the effect of various types of reinforcements and nanomaterials on the performance of geopolymer pastes. In this study fly ash–based geopolymer pastes were reinforced with micro-glass fibres and the influence of three dosages (i.e. 1%, 2% and 3%) of nano CaCO3 on the corresponding mechanical properties of the pastes were evaluated. The mechanical properties evaluated are compressive strength, flexural strength, fracture toughness and hardness. Microstructural observation of the pastes incorporating the nano CaCO3 was also carried out. The findings from this study showed that the use of nano CaCO3 at a dosage of 2% is optimum in improving the mechanical properties of micro glass-reinforced geopolymer pastes. The compressive strength, flexural strength and toughness of micro glass-reinforced geopolymer pastes incorporating 2% nano CaCO3 are 46.7%, 150.8% and 52.4%, respectively. The enhancement was attributed to the refinement of the microstructure and interfacial zones alongside the acceleration of the geopolymerization reaction. © 2021, Saudi Society for Geosciences.

引用

共 36 条

[1]

Aboulayt A., Souayfan F., Roziere E., Jaafri R., Cherki el Idrissi A., Moussa R., Justino C., Loukili A., Alkali-activated grouts based on slag-fly ash mixtures: from early-age characterization to long-term phase composition, Constr Build Mater, 260, (2020)

[2]

Adesina A., Performance and sustainability overview of alkali-activated self-compacting concrete, Waste Dispos Sustain Energy, 2, pp. 165-175, (2020)

[3]

Adesina A., Performance of fibre reinforced alkali-activated composites – a review, Materialia, 12, (2020)

[4]

Adesina A., Nanomaterials in cementitious composites: Review of durability performance, J Build Pathol Rehabil, 5, (2020)

[5]

Alomayri T., The microstructural and mechanical properties of geopolymer composites containing glass microfibres, Ceram Int, 43, pp. 4576-4582, (2017)

[6]

Alomayri T., Effect of glass microfibre addition on the mechanical performances of fly ash-based geopolymer composites, J Asian Ceram Soc, 5, pp. 334-340, (2017)

[7]

Alomayri T., Experimental study of the microstructural and mechanical properties of geopolymer paste with nano material (Al2O3), J Build Eng, 25, (2019)

[8]

Ansari rad T., Tanzadeh J., pourdada A., Laboratory evaluation of self-compacting fiber-reinforced concrete modified with hybrid of nanomaterials, Constr Build Mater, 232, (2020)

[9]

Assaedi H., The role of nano-CaCO3 in the mechanical performance of polyvinyl alcohol fibre-reinforced geopolymer composites, Compos Interfaces, 28, pp. 527-542, (2020)

[10]

Assaedi H., Alomayri T., Kaze C.R., Jindal B.B., Subaer S., Shaikh F., Alraddadi S., Characterization and properties of geopolymer nanocomposites with different contents of nano-CaCO3, Constr Build Mater, 252, (2020)

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