Mitigating the damage of ultra-high performance concrete at elevated temperatures using synergistic flame-retardant polymer fibres

Zhang, Tong; Zhang, Mingzhong; Shen, Yi; Zhu, Hehua; Yan, Zhiguo

doi:10.1016/j.cemconres.2022.106835

Cited by 29 publications

(17 citation statements)

References 82 publications

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“…This can be explained by the differences in the parent material of RCA and carbonation methods and conditions, which also suggests the necessity of a standard to evaluate and classify the quality of carbonated recycled fines and aggregates. In addition, the mechanical properties of carbonated RFA and RCA concrete were mainly measured at the ambient temperatures, so the temperature dependency of concrete with carbonated RFAs and RCAs still needs to be examined to gain more insights into the microstructure-property relationships [154][155][156].…”

Section: Effect Of Curing Agementioning

confidence: 99%

Roles of carbonated recycled fines and aggregates in hydration, microstructure and mechanical properties of concrete: A critical review

Zhang

Chen

Wang

et al. 2023

Cement and Concrete Composites

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Section: Effect Of Curing Agementioning

confidence: 99%

Roles of carbonated recycled fines and aggregates in hydration, microstructure and mechanical properties of concrete: A critical review

Zhang

Chen

Wang

et al. 2023

Cement and Concrete Composites

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“…Based on the previous study [30], a type of synergistic flame-retardant polymer fibre was fabricated by embedding organic flame retardants and metallic fillers into polypropylene resin. The mix ratio between organic and metallic agents was carefully considered to achieve a balance between flame retardant efficiency and mechanical properties of polymer fibres [31,32].…”

Section: Proportionsmentioning

confidence: 99%

“…In the authors' previous studies [29,30], a novel type of synergistic flame-retardant polymer (SFRP) fibre was developed and optimised by incorporating metallic-organic flame retardants into PP resin and its efficiency in mitigating the thermal damage of concrete was experimentally verified.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the thermo-mechanical properties of calcium aluminate concrete at elevated temperatures using synergistic flame-retardant polymer fibres

Zhang

Chen

et al. 2023

Cement and Concrete Composites

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“…Traditional concrete is less fire resistant when it has a small invalid proportion. When exposed to 800 °C, regular-and high-strength concrete loses 60% of its primary compressive strength [7,12]. The modulus of elasticity is also affected by fire, just as it is with strength [13].…”

Section: Introductionmentioning

confidence: 99%

The role of chemistry and fineness of metakaolin on the fresh properties and heat resistance of blended fly ash-based geopolymer

et al. 2023

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Sensible thermal energy storage using concrete as a storage medium is a promising technology that helps minimize energy in power plant. The purpose of this study is to evaluate the potential benefits of metakaolin (MK) as a partial substitute for fly ash-based geopolymer for heat resistance. As a partial substitute (5 and 20 wt.%) for fly ash (FA), nine metakaolins containing different alumina contents were selected. In order to assess their potential for storing high-temperature thermal energy, physical and microstructural analyses were performed before and after heat exposure up to 500 °C. Low packing density limits the workability of some metakaolins and increases water demand in pastes. The mechanical properties of geopolymer weaken as the temperature is raised (< 500 °C). The high alumina content of some metakaolins, however, helps to mitigate strength loss during high temperatures. A higher dosage of metakaolin has also shown to prevent this deterioration of strength. A reduction in strength under heating is caused by both dehydration and dehydroxylation. The higher fineness and alumina content of MK have demonstrated significant potential to enhance the heat resistance of FA-based geopolymers. As a result, the geopolymer paste developed is suitable for being used in heat-resistant applications.Article Highlights Fly ash was the main precursor of as prepared alkali-activated binders. Adding metakaolin enhances the resistance of hardened materials under thermal load. The higher the alumina content inside metakaolin is, the higher the performance is.

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Mitigating the damage of ultra-high performance concrete at elevated temperatures using synergistic flame-retardant polymer fibres

Cited by 29 publications

References 82 publications

Roles of carbonated recycled fines and aggregates in hydration, microstructure and mechanical properties of concrete: A critical review

Roles of carbonated recycled fines and aggregates in hydration, microstructure and mechanical properties of concrete: A critical review

Enhancing the thermo-mechanical properties of calcium aluminate concrete at elevated temperatures using synergistic flame-retardant polymer fibres

The role of chemistry and fineness of metakaolin on the fresh properties and heat resistance of blended fly ash-based geopolymer

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