The fire resistance of high-strength concrete containing natural zeolites

Kushnir, Alexandra; Heap, Michael; Griffiths, Luke; Wadsworth, Fabian B.; Langella, Alessio; Baud, Patrick; Reuschlé, Thierry; Kendrick, Jackie E.; Utley, James E. P.

doi:10.1016/j.cemconcomp.2020.103897

Cited by 27 publications

(9 citation statements)

References 79 publications

(81 reference statements)

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“…Detection of thermal micro cracking started at 100-200°C. Thermal micro cracking in the concretes was the effect of thermal expansion mismatch of different minerals and dihydroxylation of cement [10] The results showed that the high strength concrete behaved in an upright manner under fire, with 95% of its cross-sectional area maintained after the fire stimulation test (only 5% effectively reduced by spalling). [11] At around 250°C, spalling started to occur.…”

Section: R E S U Lt S a N D Discussionmentioning

confidence: 99%

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Fire Resistance of Concrete Structure- A Review

Yumkham¹,

Shijagurumayum²,

Suresh³

2022

SMSJ

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Fire resistance is one of the key factor which aids toward the durability of a structure. Concrete is the most widely used construction material and is also an effective material for structural fire protection. Physical and thermal properties are used to measure the fire resistance of concrete. Three main reasons of concrete fire resistance are: non-combustible, non-toxic, low thermal conductivity (concrete retain slow rate of heat transfer). The lower value of concrete thermal conductivity behaves like a perfect shield to protect the material and adjacent space from fire damage. Fire resistance of concrete depend on a few different factors mainly: aggregate type, moisture content, density, thickness. Aggregate type suitable for fire resistance of concrete are Limestone, dolomite and lime rock. This paper reviews works done by various researches on the effect of aggregates towards the fire resistance of concrete.

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Section: R E S U Lt S a N D Discussionmentioning

confidence: 99%

“…Kushnir et.al. [10] Considered replacing and partially replacing traditional ingredients, such as Portland cement and quartz sand aggregates with alternatives material as a viable method to reduce the environmental impact of cement and concrete production.…”

Section: Penetration Protectionmentioning

confidence: 99%

Fire Resistance of Concrete Structure- A Review

Yumkham¹,

Shijagurumayum²,

Suresh³

2022

SMSJ

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“…Lloyd ve Rangan'ın [9] yapmış olduğu çalışma, uçucu kül esaslı geopolimer betonun, geleneksel betondan %10-30 oranında daha ucuza imal edilmesinin mümkün olduğunu ortaya koymuştur. Yangın, lav ve nükleer erime gibi farklı etkenlerden kaynaklanan yüksek sıcaklık (YS)ların, betonun fiziksel ve mekanik özelikleri üzerinde önemli derecede olumsuz etkisi olduğu bilinmektedir [10]. Yapılan araştırmalar, geopolimer betonların geleneksel betondan daha iyi bir YS direncine sahip olduğunu ortaya koymuştur.…”

Section: Gi̇ri̇ş (Introduction)unclassified

The Effect of Aggregate Type on Geopolymer Concrete High Temperature Resistance

2023

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Beton, dünyada en çok kullanılan yapı malzemesidir. Ancak çimento üretimi sırasında yüksek miktarda enerji tüketilmekte ve karbondioksit salımı yapılmaktadır. Çimentoya alternatif bağlayıcıların üretilmesi, uzun süredir üzerinde çalışılan bir konudur. Geopolimerler, çimentoya alternatif olma potansiyeli taşıyan malzemelerdir. Geopolimerlerin iyi bir yüksek sıcaklık direncine sahip oldukları bilinmektedir. Ancak hem geleneksel hem de geopolimer betonların yüksek sıcaklık dirençleri, kullanılan agreganın türü ve özelliklerinden önemli ölçüde etkilenmektedir. Bu çalışmada kireçtaşı, dere, bazalt ve cüruf agregaları kullanılarak üretilen geopolimer betonların 600 ve 900°C yüksek sıcaklık etkisine karşı dirençleri basınç dayanımı kayıpları kıyaslanarak tespit edilmiştir. 900°C sıcaklık etkisinde, kireçtaşı ile üretilen geopolimer beton tamamen parçalanırken dere, bazalt ve cüruf agregaları ile üretilen betonların %32.9, 48.5 ve 53.6 oranında basınç dayanımı kaybına uğradıkları tespit edilmiştir.

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“…The electrons and holes can undergo successive oxidation and reduction responses to any classes that also impact the adsorbed on the surface of the semiconductor to make a contribution to the essential merchandise [30]. The electrons and holes can encounter successive oxidation and reduction reactions with any class.…”

Section: Introductionmentioning

confidence: 99%

Polymeric Droplets on SiO2 Nanoparticles through Wastewater Treatment of Carbon-Based Contaminants in Photocatalytic Degradation

Saka¹,

Jule²,

Gudata³

et al. 2022

Journal of Nanomaterials

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The current work focus is on utilizing sunlight to catalyze the destruction of carbon-based (organic) pollutants. To increase the morphological area and improve the proficiency of the photocatalytic technique, sodium alginate was used as a polymeric tool and arranged as drop practice. SiO2 nanoparticles were doped into sodium alginate droplets. The developed SiO2 nanomaterials were able to spread the wavelength diversity throughout a significant wavelength constituency. In the photocatalytic technique employing the lot photoreactor, MB was used as a sample of carbon-based pollutants. The sunlight catalytic procedure was implemented from UV-Vis or photo light droplets. The analysis of the synthesized droplets was tested using devices X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL) analysis. Correspondingly, the influences of different concentrations of SiO2 nanosolution (5 ml, 10 ml, 15 ml, and 20 ml) on the photocatalytic effectiveness of the deposited nanoparticles were studied. The output result revealed that sodium alginate beads doped with SiO2 at 20 ml were able to reduce (degrade) 98.9% underneath UV-visible light. However, in the case of using other concentrations, SiO2 at 5, 10, and 15 ml were able to degrade 50%, 56.7%, and 67.9% under sunlight, respectively, after 2 h.

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The fire resistance of high-strength concrete containing natural zeolites

Cited by 27 publications

References 79 publications

Fire Resistance of Concrete Structure- A Review

Fire Resistance of Concrete Structure- A Review

The Effect of Aggregate Type on Geopolymer Concrete High Temperature Resistance

Polymeric Droplets on SiO2 Nanoparticles through Wastewater Treatment of Carbon-Based Contaminants in Photocatalytic Degradation

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