Thermal, mineralogical, and microstructural characterizations of irradiated polymer blended cement mortar composites

El‐Hamouly, S. H.; Ismail, Mohamed R.; Abdel-Rahman, H.A.; Younes, M.M.; Amin, Eiman H.

doi:10.1002/pc.23092

Cited by 4 publications

(5 citation statements)

References 25 publications

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“…The use of thermal analysis, including differential thermal analysis and derivative thermogravimetry, enables a description of the reactions that occur in cementitious composites with an increase in temperature [52]. Typically, hydrated cement pastes include four main components: tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A) and tetracalcium aluminoferrite (C4AF) [53].…”

Section: Thermalgravimetric Analysismentioning

confidence: 99%

“…Out of the first three mixing procedures, the best performance was obtained for samples from the S3 group, which had a relatively high T5% and the highest T10%, whilst the remaining mass at 800 • C was around 76% of the initial, which was 12%, 8% and 3% higher than that of S1, S2 and S3, respectively. It is worth noting that weight loss above 5% would occur around 900-1000 • C when the wollastonite would suffer structural changes [52,58].…”

Section: Infrared Spectroscopy Analysismentioning

confidence: 99%

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Performance of Polymer Cementitious Coatings for High-Voltage Electrical Infrastructure

Li²,

Bompa

et al. 2021

Infrastructures

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This paper investigates the electrical, thermal and mechanical properties as well as the environmental performance of polymer cementitious composites (PCCs) as sustainable coating materials for underground power cables and as high-voltage insulators. Particular focus is placed on the optimised mix design and the effect of the manufacturing method on the performance of PCCs, incorporating liquid styrene and acrylic (SA) monomers, wollastonite and muscovite. Microstructural investigations, together with results from strength tests, indicate that the manufacturing method is a key performance parameter. Experimental results show that PCC mixes containing 25% SA emulsion, 12.5% wollastonite and no muscovite provide the most favourable dielectric properties from the mixes investigated. The PCC material has a dielectric strength up to 16.5 kV/mm and a dielectric loss factor lower than 0.12. Additional experiments also show that PCC has good thermal stability and thermal conductivity. The mechanical strength tests indicate that PCC specimens possess reliable strengths which are applicable in structural design. Environmental assessments also show that PCCs possess significantly lower embodied energy and embodied carbon than conventional plastic insulating materials.

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Section: Thermalgravimetric Analysismentioning

confidence: 99%

Section: Infrared Spectroscopy Analysismentioning

confidence: 99%

Performance of Polymer Cementitious Coatings for High-Voltage Electrical Infrastructure

Li²,

Bompa

et al. 2021

Infrastructures

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“…For the optimization of the surface modification of plastic aggregates through gamma irradiation, the gamma irradiation doses were set at four levels of 25, 50, 75, and 100 kGy, with reference to previous studies [20,34,36,[40][41][42][43][44] that considered the effect of gamma irradiation on the strength properties of cementitious composites at various doses. Irradiation was provided by a cobalt-60 gamma irradiator of automatic pallet type, manufactured by the Nordion Corporation in Canada and located at the Greenpia Technology Corporation in Korea.…”

Section: Gamma Irradiation Proceduresmentioning

confidence: 99%

State-of-the-Art Modification of Plastic Aggregates Using Gamma Irradiation and Its Optimization for Application to Cementitious Composites

Lee

Cheon

Kang³

et al. 2021

Applied Sciences

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In the past few decades, there have been numerous attempts to add plastic aggregates composed of polymeric materials to cementitious composites, either as an alternative to using natural aggregates or as fillers and fibers. However, the addition of plastic aggregates often results in cementitious composites with lower mechanical performance. In this paper, we attempt to address this issue by applying gamma irradiation technology to restore the mechanical performance. We aimed to determine the optimal gamma irradiation and mixing combinations by comparing the experimental results with information summarizing the recent literature related to the use of gamma-irradiated plastic aggregates within cementitious composites. To this end, the effects of changes in the physical and chemical properties of plastics due to irradiation with gamma irradiation on the strength of cementitious composites were evaluated using irradiation doses of 25, 50, 75, and 100 kGy and various plastic materials as key parameters. In the compressive strength test, it was found that adding gamma-irradiated plastic increased the compressive strength of the cementitious composites compared to the nonirradiated plastic. This suggests that the irradiation of plastic aggregates with gamma rays is an effective method to recover some of the strength lost when plastic aggregates are added to cementitious composites. In addition, modifications in the microstructure and chemical properties of the gamma-irradiated plastic were analyzed through SEM and FT-IR analysis, which allowed the determination of the strength enhancement mechanism. The results of this study show the possibility of the state-of-the-art performance improvement method for using plastic aggregate as a substitute for natural aggregate, going further from the plastic performance improvement technology for limited materials and radiation dose presented in previous studies.

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“…SH El-Hamouly et al [20] worked on the effects of irradiation dose and addition of styrene-acrylic ester (SAE) to cement mortars composites contain Nano calcined clay (NCC). In the preparation of the samples, the NCC was replaced with cement at 5 and 10%.…”

Section: Examples From Literaturementioning

confidence: 99%

“…In addition, it has been reported that the SAE polymer affects the microstructure of the hydration products of the cement blend to form a denser matrix [20]. M Martinez-Lopez et al [21] to gamma rays at doses between 100 and 500 kGy to provide a better interfacial surface coupling between the matrix and Tetra Pak particles.…”

Section: Examples From Literaturementioning

confidence: 99%

Effects of Gamma Irradiation on Polymer-Modified Concrete (PMC): A Review

Cesur

Koçkal

2019

CTCSE

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Polymer concrete composites are generally classified as follows: Polymer impregnated concrete (PIC) which is polymerized in situ after impregnation with monomer, polymer concrete (PC) formed by polymerizing the monomer in the mixture and polymer modified concrete (PMC) or polymer Portland cement concrete (PPCC)where polymer modified monomer and aggregate used as binder.The polymer particles in Latex are dispersed homogeneously when

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Thermal, mineralogical, and microstructural characterizations of irradiated polymer blended cement mortar composites

Cited by 4 publications

References 25 publications

Performance of Polymer Cementitious Coatings for High-Voltage Electrical Infrastructure

Performance of Polymer Cementitious Coatings for High-Voltage Electrical Infrastructure

State-of-the-Art Modification of Plastic Aggregates Using Gamma Irradiation and Its Optimization for Application to Cementitious Composites

Effects of Gamma Irradiation on Polymer-Modified Concrete (PMC): A Review

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