Fine-grained concrete fibre-reinforced by secondary mineral wool raw material

Горленко, Н. П.; Sarkisov, Yu. S.; Demyanenko, Olga; Kopanitsa, N. O.; Sorokina, E. A.; Gorynin, G. L.; Nichinskiy, A. N.

doi:10.1088/1742-6596/1118/1/012059

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…Although there were cases where compressive strength increased with some addition, it dropped with increasing addition. This was observed in Gorlenko et al [24] research, which used basaltic fibers in concrete. It is important to note that although the compressive strength recorded was lower than control mortars; it did not go below the approved working standards.…”

Section: Introductionmentioning

confidence: 53%

“…Hareedy, Nasr, and Sadek [22], who researched incorporating rice straw into cement bounded boarded also observed an increase in flexural strength, but flexural strength deteriorated with increasing addition. Other studies [23][24][25][26] have also dwelt on the thermal insulation properties of rice straw and mineral wool. Also, some applications of fibrous materials in mortar production have been reported [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

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Thermal insulation and mechanical characteristics of cement mortar reinforced with mineral wool and rice straw fibers

Awoyera

Akinrinade

Galdino

et al. 2022

Journal of Building Engineering

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Section: Introductionmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Thermal insulation and mechanical characteristics of cement mortar reinforced with mineral wool and rice straw fibers

Awoyera

Akinrinade

Galdino

et al. 2022

Journal of Building Engineering

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“…Some scholars found that the degree of C-S-H gel polymerization and chain length increased at the cemented surface when the shotcrete was mixed with silica fume. A large number of CH crystals generated C-S-H gel, which filled in the interface pores, which enhanced the interfacial strength [111,112]. This could be expressed as Ca(OH) 2 +SiO 2 +H 2 O→C-S-H. Benarchid et al [113] analyzed the vulcanization properties of waste rock and concluded that it had good safety.…”

Section: Solution Dehumidification and Coolingmentioning

confidence: 99%

Mechanical Properties and Microstructure of Shotcrete under High Temperature

Liu

Zhao

Zhang³

et al. 2021

Applied Sciences

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High temperature is recognized as one of the extreme environments in the application of shotcrete which significantly deteriorate the performance of shotcrete. This paper reviews the mechanical properties and microstructure of shotcrete under high temperature. First of all, this paper reviews the cause of formation of high ground temperature. Based on these causes, the author establishes a heat transfer model with a spiral shape by introducing a multidimensional morphological formula into the heat conduction process. Then, the paper reviews the influence of high temperature on the mechanical and micro properties of shotcrete, the cooling technology under high temperature, and the optimization research technology of shotcrete. The author discusses the influence of high temperature on the thermal parameters and the deformation of shotcrete from the perspective of thermodynamics. Multiple studies have shown that the irregular movement and disorderly overlapping of molecules in the shotcrete caused by the high temperature environment result in the premature termination of the hydration reaction of cement in shotcrete. Finally, the author suggests the challenges of high-temperature shotcrete in term of the process structure, performance optimization, and application in special engineering fields. The research in this paper intends to give guidance to those conducting shotcrete research under high temperature, and to promote the further development of shotcrete technology.

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“…In this respect, they concluded that the best results are obtained by incorporating the secondary mineral wool raw material with a concentration range of 0.5%–1% mass. They observed improvement in compressive and bending strengths of the FGC and found that in the early periods of hardening, the strength is developed more efficiently (Gorlenko et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

An experimental study on the performance of fine-grained concrete incorporating recycled steel spring exposed to acidic conditions

Pachideh

Gholhaki

2020

Advances in Structural Engineering

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This article aims to study the effects of adding steel fibers and galvanized recycled spring on mechanical properties and crack development in the fine-grained concrete exposed to the acidic environment containing magnesium sulfate. To this end, specimens containing 0.3% and 0.6% of steel fibers and springs, respectively, by concrete volume, were built in normal temperature using 10 cm × 20 cm standard steel formworks so as to conduct the compressive and tensile strength tests. All specimens were cured in 28 days exposed to the environment containing 0%, 5%, and 10% of magnesium sulfate. Based on the results, addition of steel fibers and recycled spring improves the compressive and tensile strength by 50% and 60%, respectively. Moreover, the specimens containing recycled spring better withstood against the acidic environments in comparison with the specimens including steel fibers. In general, it was found that due to the negligible difference between the strength of the specimens, the application of metal-recycled spring in the fine-grained concrete is technically and economically justifiable.

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Fine-grained concrete fibre-reinforced by secondary mineral wool raw material

Cited by 5 publications

References 6 publications

Thermal insulation and mechanical characteristics of cement mortar reinforced with mineral wool and rice straw fibers

Thermal insulation and mechanical characteristics of cement mortar reinforced with mineral wool and rice straw fibers

Mechanical Properties and Microstructure of Shotcrete under High Temperature

An experimental study on the performance of fine-grained concrete incorporating recycled steel spring exposed to acidic conditions

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