Correlation of microstructure and mechanical properties of various fabric reinforced geo-polymer composites after exposure to elevated temperature

Samal, Sneha; Thanh, Nhan Phan; Petríková, Iva; Marvalová, Bohdana; Vallons, Katleen; Lomov, Stepan Vladimirovitch

doi:10.1016/j.ceramint.2015.06.029

Cited by 51 publications

(26 citation statements)

References 18 publications

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“…An almost similar result was observed for micro-carbon fiber reinforced geopolymers by retaining over 50% of compressive strength at 800 °C [213]. This is due to the sufficient interaction between carbon fiber and binder at elevated temperatures, which hinders the crack formation and matrix deformation [214][215][216]. Besides, it was reported that Sol-SiO2 impregnation resulted in about 35% increase in the mechanical performance of the carbon fiber reinforced geopolymer at elevated temperature up to 900 °C and extended the carbon fiber oxidation [217].…”

Section: Carbon Fiber Reinforced Geopolymerssupporting

confidence: 75%

Fiber-reinforced geopolymer composites: A review

Ranjbar¹,

Zhang

2020

Cement and Concrete Composites

441

220

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There is a burgeoning interest in the development of geopolymers as sustainable construction materials and incombustible inorganic polymers. However, geopolymers show high quasi-brittle behavior. To overcome such weakness, hundreds of research have been focused on development, characterization, and implementation of fiber reinforced geopolymers for a wide range of applications. This paper discusses the rapidly developing state-of-the-art of fiber-reinforced geopolymer composites, focusing on material and geometrical properties of construction fibers, and underlying mechanisms on fiber-binder interaction at fresh and hardened states, mechanical properties, toughening mechanisms, thermal characteristics, and environmental durability. It is intended to build a strong conceptual and technical background for what is currently understood on fiber reinforced geopolymers by tying the subject together with knowns for other similar cementitious composites rather than a historical report of literature.

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Section: Carbon Fiber Reinforced Geopolymerssupporting

confidence: 75%

Fiber-reinforced geopolymer composites: A review

Ranjbar¹,

Zhang

2020

Cement and Concrete Composites

441

220

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“…At high processing temperature, the basalt reinforced geo-polymer composite strength decreases. For high thermal temperature applications in thermal barrier coatings and panels, carbon reinforced geo-polymer composite can be a good choice [11].…”

Section: Introductionmentioning

confidence: 99%

Development and Mechanical Testing of Porous-Lightweight Geopolymer Mortar

Qadir¹,

Rashid²,

Ahmad³

et al. 2020

Preprint

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In this study, a novel porous geopolymer mortar (GP) was produced and tested experimentally. Industrial waste materials/by-products were used as constituents of the GP, along with dune sand. One sample was produced as a control sample for benchmarking. For the rest of the samples, 15%, 30%, and 45% by volume, the solid constituents were replaced with expanded polystyrene foam (EPS) beads. These mortar samples were heat cured to depolymerize the EPS to cause porosity inside the samples. Indoor experiments were conducted to evaluate the response of produced porous GP to high heat flux. The porous samples were able to reduce heat transmission across the opposite surfaces. Induced porosity resulted in a decrement in compressive strength from 77.2 MPa for the control sample to 15.8 MPa for 45% porous sample. However, the limit lies within the standards for partitioning walls in buildings and pavements in urban areas to absorb rainwater.

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“…The material's behavior towards runaway debris or objects that fall on its top surface determine the durability of the material, considering the residual strength depends on the damaged area upon impact [14]. A composite material is made of fibers embedded in a matrix, which is generally laminated with fibers oriented in alternating directions to give the material strength and stiffness [15]. For the construction of building structures, woven fabrics are usually the choice to save weight, minimize resin void size, and maintain fiber orientation during the fabrication process.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Internal Structure of Fiber Reinforced Geopolymer Composite under Mechanical Impact: A Micro Computed Tomography (µCT) Study

et al. 2019

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The internal structure of fiber reinforced geopolymer composite was investigated by microfocus X-ray computed tomography (µCT) under mechanical impact. µCT is a non-destructive, multi approach technique for assessing the internal structures of the impacted composites without compromising their integrity. The three dimensional (3D) representation was used to assess the impact damage of geopolymer composites reinforced with carbon, E-glass, and basalt fibers. The 3D representations of the damaged area with the visualization of the fiber rupture slices are presented in this article. The fiber pulls out, and rupture and matrix damage, which could clearly be observed, was studied on the impacted composites by examining slices of the damaged area from the center of the damage towards the edge of the composite. Quantitative analysis of the damaged area revealed that carbon fabric reinforced composites were much less affected by the impact than the E-glass and basalt reinforced composites. The penetration was clearly observed for the basalt based composites, confirming µCT as a useful technique for examining the different failure mechanisms for geopolymer composites. The durability of the carbon fiber reinforced composite showed better residual strength in comparison with the E-glass fiber one.

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Correlation of microstructure and mechanical properties of various fabric reinforced geo-polymer composites after exposure to elevated temperature

Cited by 51 publications

References 18 publications

Fiber-reinforced geopolymer composites: A review

Fiber-reinforced geopolymer composites: A review

Development and Mechanical Testing of Porous-Lightweight Geopolymer Mortar

Investigation of the Internal Structure of Fiber Reinforced Geopolymer Composite under Mechanical Impact: A Micro Computed Tomography (µCT) Study

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