Investigation of the performance of asphalt binder modified by sargassum

Salazar-Cruz, Beatriz Adriana; Zapién-Castillo, Samuel; Hernández-Zamora, Gabriel; Rivera‐Armenta, José Luis

doi:10.1016/j.conbuildmat.2020.121876

Cited by 14 publications

(12 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is consistent with the observations of Sharifi and Pirsa [37] who found that the complete degradation of pectin occurs in the temperature range of 180 to 450 °C. [34][35][36]. This is consistent with the observations of Sharifi and Pirsa [37] who found that the complete degradation of pectin occurs in the temperature range of 180 to 450 • C.…”

Section: Thermogravimetry (Tga)supporting

confidence: 91%

“…The initial step down, between 50 • C and 150 • C, is attributed to the moisture loss of the sample. Then, owing to the low decomposition temperature of hemicellulose, lignin, and pectin, a degradation temperature close to 262 • C is observed, which ends up with a significant drop around 324 • C, showing a residual mass corresponding to carbonous compounds[34][35][36]. This is consistent with the observations of Sharifi and Pirsa[37] who found that the complete degradation of pectin occurs in the temperature range of 180 to 450 • C.…”

supporting

confidence: 89%

“…Figure 4 shows the crystalline model of SGP in the range between 10° and 110°, where the structure of both amorphous and crystalline fractions may be observed. The X-ray pattern of Figure 5 reveals a crystalline network attributed to the cellulose in SGP, exhibiting its typical diffraction peaks at 2θ = 16.0° and 22.6° [34,38,39]. The sharp peaked displayed at 2θ = 30° is consistent with crystalline sulphated polysaccharides found in brown seaweed sargassum [40].…”

Section: X-ray Diffraction (Xrd)supporting

confidence: 53%

“…The FTIR results confirm that no new functional groups show up other than those already present in either the asphalt or the SGP individual spectra; therefore, no chemical changes take place during the modification process. However, the union between the SGP and the asphalt constituents occurs as a result of physical interactions, such as the van der Waals or electrostatic forces, between the polysaccharides and amino acids of sargassum and between the hydroxy and amino groups of some of the aromatic molecules of the adsorbed asphalt phase [10,34].…”

Section: Infrared Spectroscopymentioning

confidence: 99%

See 3 more Smart Citations

Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties

et al. 2021

View full text Add to dashboard Cite

The effect of sargassum particle size on the final properties of sargassum-modified asphalt is investigated in this article. Seaweed sargassum particles were first obtained and characterized through elemental analysis, thermogravimetric analysis (TGA), X-ray diffraction, and FTIR spectroscopy. Additionally, pure and sargassum-modified asphalt blends were evaluated through physical and rheological tests such as penetration, softening point, thermal stability, dynamic viscosity, failure temperature, and epifluorescence microscopy. Modified asphalt blends were prepared by the hot mixing technique using different proportions of sargassum particles of two maximum sizes: 500 μm and 850 μm. Incorporating 3.0 wt.% of sargassum particles under 500 μm into the asphalt increased the viscosity of the original binder by a factor of 2.5 and its complex modulus by a factor of 1.9. At the same time, its failure temperature was 11 °C higher than the reference asphalt, which implies an improved viscoelastic behavior and rutting resistance at high temperatures. The study results suggest that the particles under 500 μm were responsible for the most significant effect on the final properties of the asphalt. Moreover, the storage stability test revealed that the modified asphalt blends are stable when the sargassum particle content was kept below 3.0 wt.%. The statistical analysis of the effect of sargassum particle size and concentration on the modified asphalt properties revealed that the rheological behavior is more affected by the modifier particle size; in contrast, the conventional physical properties were more determined by its concentration. Therefore, using low proportions of fine sargassum particles is efficient for improving the physical and rheological properties of the original asphalt, which is not only positive from the asphalt modification technology point of view but also from a sustainable perspective, since seaweed sargassum has become a useless plague in many coastal regions.

show abstract

Section: Thermogravimetry (Tga)supporting

confidence: 91%

supporting

confidence: 89%

Section: X-ray Diffraction (Xrd)supporting

confidence: 53%

Section: Infrared Spectroscopymentioning

confidence: 99%

See 2 more Smart Citations

Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In recent years, biotechnology and pavement engineering materials have become increasingly closely integrated [11]. Bio-based materials have excellent properties, such as researchers have conducted numerous studies on the effects of shell waste on the properties of cementitious materials [42,43], there is a lack of exploration of the rheological properties of shellfish waste-modified asphalt.…”

Section: Introductionmentioning

confidence: 99%

Effect of Recycled Shell Waste as a Modifier on the High- and Low-Temperature Rheological Properties of Asphalt

Guo

Wang

et al. 2021

Sustainability

View full text Add to dashboard Cite

The deteriorating ecological environment and the concept of sustainable development have highlighted the importance of waste reuse. This article investigates the performance changes resulting from the incorporation of shellac into asphalt binders. Seashell powder-modified asphalt was prepared with 5%, 10%, and 15% admixture using the high-speed shear method. The microstructure of the seashell powder was observed by scanning electron microscope test (SEM); the physical-phase analysis of the seashell powder was carried out using an X-ray diffraction (XRD) test; the surface characteristics and pore structure of shellac were analyzed by the specific surface area Brunauer-Emmett-Teller (BET) test; and Fourier infrared spectroscopy (FTIR) qualitatively analyzed the composition and changes of functional groups of seashell powder-modified asphalt. The conventional performance index of seashell powder asphalt was analyzed by penetration, softening point, and ductility (5 °C) tests; the effect of seashell powder on asphalt binder was studied using a dynamic shear rheometer (DSR) and bending beam rheometer (BBR) at high and low temperatures, respectively. The results indicate the following: seashell powder is a coarse, porous, and angular CaCO3 bio-material; seashell powder and the asphalt binder represent a stable physical mixture of modified properties; seashell powder improves the consistency, hardness, and high-temperature performance of the asphalt binder but weakens the low-temperature performance of it; seashell powder enhances the elasticity, recovery performance, and permanent deformation resistance of asphalt binders and improves high-temperature rheological properties; finally, seashell powder has a minimal effect on the crack resistance of asphalt binders at very low temperatures. In summary, the use of waste seashells for recycling as bio-modifiers for asphalt binders is a practical approach.

show abstract

Performance enhancement of modified asphalt via coal gangue with microstructure control

Liu

Jin

et al. 2023

Construction and Building Materials

View full text Add to dashboard Cite

Investigation of the performance of asphalt binder modified by sargassum

Cited by 14 publications

References 26 publications

Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties

Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties

Effect of Recycled Shell Waste as a Modifier on the High- and Low-Temperature Rheological Properties of Asphalt

Performance enhancement of modified asphalt via coal gangue with microstructure control

Contact Info

Product

Resources

About