Mechanical and electromagnetic performance of cement based composites containing different replacement levels of ground granulated blast furnace slag, fly ash, silica fume and rice husk ash

Öztürk, Murat; Karaaslan, Muharrem; Akgöl, Oğuzhan; Sevim, Umur Korkut

doi:10.1016/j.cemconres.2020.106177

Cited by 89 publications

(35 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, some studies have focused on the electrical properties of different substances. 8,9 The dielectric spectra in the range 20-4500 MHz can be successfully applied to assess the sugar content of fruits with a thin rind, such as kiwifruit, 10 apples, 11,12 pears 13 and persimmons. 14 These studies demonstrate that dielectric spectroscopy can be applied as an alternative technique for detecting the internal qualities of fruits.…”

Section: Introductionmentioning

confidence: 99%

Non‐destructive sugar content assessment of multiple cultivars of melons by dielectric properties

Liu

Wang

et al. 2021

J Sci Food Agric

View full text Add to dashboard Cite

BACKGROUND: Non-destructive determination of the internal quality of fruit with a thick rind and of a large size is always difficult and challenging. To investigate the feasibility of the dielectric spectroscopy technique with respect to determining the sugar content of melons during the postharvest stage, three cultivars of melon samples (160 melons for each cultivar) were used to acquire dielectric spectra over the frequency range 20-4500 MHz. The three cultivars of melons were divided separately into a calibration set and a prediction set in a ratio of 3:1 by a joint x-y distance algorithm. Partial least squares (PLS) and extreme learning machine (ELM) methods were applied to develop individual-cultivar and multi-cultivar models based on full frequencies (FFs) and effective dielectric frequencies (EDFs) selected by the successive projection algorithm (SPA). RESULTS:The results showed that ELM models demonstrated a better performance than PLS models for the same input dielectric variables. Most of the models built based on the EDFs selected by SPA had a slightly worse performance compared to those based on FFs. For both PLS and ELM methods, the models for multi-cultivars demonstrated a worse calibration and prediction performance compared to those for individual cultivars. When individual-cultivar and multi-cultivar samples were used to build sugar content determination models, the best model was FFs-ELM (R p = 0.887, RMSEP = 0.986), FFs-ELM (R p = 0.870, RMSEP = 1.028), FFs-PLS (R p = 0.882, RMSEP = 1.010) and FFs-ELM (R p = 0.849, RMSEP = 1.085) for 'Hongyanliang', 'Xinzaomi', 'Manao' and multi-cultivar melons, respectively. CONCLUSION: The present study indicates that it is possible to develop both individual-cultivar and multi-cultivar models for determining the sugar content of melons based on the dielectric spectroscopy technique.

show abstract

Section: Introductionmentioning

confidence: 99%

Non‐destructive sugar content assessment of multiple cultivars of melons by dielectric properties

Liu

Wang

et al. 2021

J Sci Food Agric

View full text Add to dashboard Cite

show abstract

“…Thus, public facilities with no electromagnetic pollution and microwave(MW)‐absorbing building materials are highly demanded. As one of the most widespread building materials, cement‐based materials are often used as MW‐absorbing materials due to their stability, multifunctionality, low density, and low cost 1 . Importantly, a large number of absorbing mediums such as carbon‐derived materials 2–4 and metal oxides 5–7 can be incorporated in cement‐based materials.…”

Section: Introductionmentioning

confidence: 99%

“…This incorporation can provide novel opportunities for designing multifunctional cement‐based materials. For example, some additives and fibers improve both mechanical properties and electromagnetic parameters 1,8 . In addition, Zhang and Sun 6 reported the MW‐absorbing characteristics of cement composites with Mn–Zn ferrite.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid effects of polyvinyl alcohol (PVA) and basalt fibers on microwave absorption of cement composites with fly ash

Shen

et al. 2021

J Am Ceram Soc.

View full text Add to dashboard Cite

Polyvinyl alcohol (PVA) and basalt fibers have been overlooked in the microwave absorption enhancement due to their low electromagnetic parameters. In this study, we examined the hybrid effects of PVA and basalt fibers on the microwave absorption of cement composites with high‐volume fly ash. The mechanisms of the enhanced absorption were explored by investigating microstructures, phase compositions, and chemical bonds. It was found that reflection loss is significantly enhanced with variation in fiber proportion. Also, the fibers affect the dielectric properties using the Debye relaxation. In addition, in this paper, the relationship between the microstructure and electromagnetic parameters is established. It was also found that, in cement composites with high‐volume fly ash, the hybrid effects of PVA and basalt fibers can improve the polymerization of the C–A–S–H gel, which influences these cement composites’ microstructures, and in turn, their Debye relaxation.

show abstract

“…In addition, the influence on the gel time, setting time, compressive strength, and corrosivity of cement slurry were explored by adding sodium silicate, ammonium dihydrogen phosphate, slag [11,12], fly ash [13][14][15], etc. to it.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Reinforcing Broken Gangues by Colloid Cement Slurry

Lyu

Yang

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

Studies on jet grouting materials mainly focus on the aggregates in cement or the environment where they are maintained and rarely deal with the cohesiveness, reinforcement load-bearing characteristics, and surface spalling. In this study, cement slurries with different colloid contents were prepared to explore the characteristics and reinforcement effect of broken gangues. These were then subjected to mechanical testing to measure the strength and axial strain performance, and the failure modes and failure patterns were discussed. The results indicated that the colloid component has a significant strengthening effect on the early strength of the samples. As the age increased, the sample axial strain and elastic modulus of the colloid cement paste increased as the colloid component provides viscoelasticity when it resists deformation. The sample strength of cement paste decreases after the addition of broken gangue while the strength of class E samples increases significantly during each age. The cement paste sample showed penetrating splitting failure, the colloidal component effectively controlled the peeling of sample surface, and the failure mode after adding gangue was relatively complicated. The instability modes of the samples are divided into dispersed load-bearing instability and cumulative load-bearing instability, and the content of colloid components affects the failure mode of the samples. A colloid component proportion of 23.33% is the optimal choice, which has an obvious reinforcement effect on the broken gangue.

show abstract

Mechanical and electromagnetic performance of cement based composites containing different replacement levels of ground granulated blast furnace slag, fly ash, silica fume and rice husk ash

Cited by 89 publications

References 38 publications

Non‐destructive sugar content assessment of multiple cultivars of melons by dielectric properties

Non‐destructive sugar content assessment of multiple cultivars of melons by dielectric properties

Hybrid effects of polyvinyl alcohol (PVA) and basalt fibers on microwave absorption of cement composites with fly ash

Experimental Study of Reinforcing Broken Gangues by Colloid Cement Slurry

Contact Info

Product

Resources

About