Durability properties of basalt fiber-reinforced mortars with different mineral admixtures exposed to high temperatures

Yıldırım, Musa; Özhan, Hacer Bilir

doi:10.1016/j.conbuildmat.2023.132574

Cited by 14 publications

(4 citation statements)

References 51 publications

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“…of PhA fibers added, the EXP begins to reduce. This is attributed to the random distribution of PhA fibers, forming a microstructural system that restrains the matrix EXP [24,25,53]. Similar to CH-S, AU-S, and DR-S, the EXP data were fitted using the hyperbolic model.…”

Section: Expansion (Exp)mentioning

confidence: 99%

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Volume Stability and Mechanical Properties of Cement Paste Containing Natural Fibers from Phragmites-Australis Plant at Elevated Temperature

Ghanem,

Ramadan,

Khatib

et al. 2024

Buildings

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The utilization of bio-fiber materials in building components has become imperative for improving sustainability, controlling global warming, addressing environmental concerns, and enhancing concrete properties. This study is part of a wide-range investigation on the use of Phragmites-Australis (PhA) fibers in construction and building materials. In this paper, the volume stability and mechanical properties of paste containing PhA fibers and exposed to high temperatures were investigated. Four mixes were made with 0, 0.5, 1, and 2% fibers by volume. To evaluate the volume stability and mechanical properties, the chemical shrinkage, autogenous shrinkage, drying shrinkage, expansion, ultrasonic pulse velocity, compressive strength, and flexural strength were tested. The curing duration and temperature were 180 days and 45 °C, respectively. The results indicated that an addition of PhA fibers of up to 2% resulted in a reduction in all the shrinkage parameters at 180 days. The presence of PhA fibers in the paste tended to reduce the compressive strength, with the lowest value observed at 2%. Apart from the values at 90 days, the optimal flexural strength seemed to be achieved by the paste with 1% PhA fibers. To further elucidate the experimental results, a hyperbolic model was employed to predict the variation in the length change as a function of the curing age with a high accuracy. Based on the results obtained, PhA fibers can play a crucial role in mitigating the shrinkage parameters and enhancing the mechanical properties of cement paste.

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Section: Expansion (Exp)mentioning

confidence: 99%

“…However, with a higher quantity of PhA fibers added, the EXP begins to reduce. This is attributed to the random distribution of PhA fibers, forming a microstructural system that restrains the matrix EXP [24,25,53].…”

Section: Expansion (Exp)mentioning

confidence: 99%

Volume Stability and Mechanical Properties of Cement Paste Containing Natural Fibers from Phragmites-Australis Plant at Elevated Temperature

Ghanem,

Ramadan,

Khatib

et al. 2024

Buildings

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“…Additionally, no hazardous materials or chemical additives are needed for their production [13]. This kind of fiber is non-corrosive and environmentally safe, with good thermal endurance and insulating characteristics [16][17][18]. Several research papers reported that conventional steel reinforcement can be replaced by adopting fiber-reinforced concrete with basalt [16,19,20].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Novel Basalt Fiber Pellets from Micro- to Macro-Scale, and from Basic to Applied Fields: A Review on Recent Contributions

Ahmed,

Bediwy,

Azzam

et al. 2024

Fibers

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Fiber-reinforced cementitious composites (FRCC) are one of the leading engineering materials in the 21st century, as they offer proficiency in enhancing strength, ductility, and durability in structural engineering applications. Because the recently developed basalt fiber pellets (BFP) offer combined strands of fibers encased in a polymer matrix, they are being prevalently studied to explore new possibilities when used in brittle materials such as mortar and concrete. Hence, this paper synthesizes the intensive research efforts and contributions to this novel class of fibers conducted by the authors. Specifically, it reviews the fresh, mechanical, and durability properties of FRCC incorporating single BFP or hybrid with polyvinyl alcohol fibers and modified with slag/fly ash and nano-materials and its suitability for different field applications. In addition, the nano- and meso-scale modeling of such matrices are described. BFP significantly contributes to improving post-cracking flexural behavior by toughening the cementitious matrix and minimizing strength losses when exposed to harsh environments. All results show promising progress in the development of high-performance FRCC comprising BFP, with potential success for structural and pavement applications.

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“…Fibres are widely used in concrete mixtures to improve the mechanical properties and durability of cement-based materials. Owing to the bridging behaviour in concrete and mortar, the fibres significantly restrict crack widths [8]. This attribute of fibres is crucial, especially for producing self-healing bacterial concrete, because bacteria offer a more effective and faster treatment of crack widths [9,10].…”

Section: Introductionmentioning

confidence: 99%

Production of Self-Healing Mortar Using Bacterial Spores Encapsulated With Jute Fibre

Yıldırım,

Özhan,

ÖZ

2023

ACAE

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Cement-based composites have various advantages such as low cost, easy shaping, and high compressive strength. Therefore, they are widely used in the construction industry. However, their brittle structure makes them prone to cracking, which must be repaired promptly to avoid possible loss of strength and durability and ultimate structural failures. Microbially-induced calcite precipitation (MICP) offers an effective method for healing these cracks. Unlike other treatments, MICP method is a natural and environment-friendly option for self-healing of cracks. However, bacteria can be damaged by cement and mechanical impacts; therefore, encapsulation is necessary to protect them. Encapsulation in fibres is a simpler and more cost-effective method than the other techniques. This study tested the effectiveness of encapsulating Bacillus megaterium spores in jute fibres and added them to cement-based mortars. Different nutrient supplements were used, and physical analyses and compressive strength tests were conducted on 28-day cured cube specimens. Present findings revealed that Bacillus megaterium-type bacteria encapsulated in jute fibres improved the compressive strength recovery and healed the loading-induced cracks.

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Durability properties of basalt fiber-reinforced mortars with different mineral admixtures exposed to high temperatures

Cited by 14 publications

References 51 publications

Volume Stability and Mechanical Properties of Cement Paste Containing Natural Fibers from Phragmites-Australis Plant at Elevated Temperature

Volume Stability and Mechanical Properties of Cement Paste Containing Natural Fibers from Phragmites-Australis Plant at Elevated Temperature

Utilization of Novel Basalt Fiber Pellets from Micro- to Macro-Scale, and from Basic to Applied Fields: A Review on Recent Contributions

Production of Self-Healing Mortar Using Bacterial Spores Encapsulated With Jute Fibre

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