Correlation Analysis of the Gradation Design Parameters and Mechanical Performance of Semi-Flexible Pavement DOI

Zijia Xiong,

Minghui Gong,

Jinxiang Hong

et al.

Published: Jan. 1, 2023

Semi-flexible pavement has been widely used for ant-rutting performance and resistance in heavy load conditions. The asphalt mixture skeleton was the central part complex-skeleton material system. However, few studies have made on connection of composition semi-flexible material. Therefore, relationship between grade volumetric characteristic mechanical properties investigated. Eight gradations with different coarse aggregate contents were constituted. performances conducted to establish primary gradation performance. result shows that porosity matrix Cantabro abrasion test are related gradation. tensile performance, shear characteristics, compressive strength affected by voids filled (VFA), porosity, fine ratio (FB), respectively. Burgers model accurately reflected creep curves specimens. modulus VFA, effective content (Pbe). It is concluded can better meet design's adjusting controlling these indexes.

Language: Английский

Lightweight Composite Aramid Nanofiber Aerogel With Multistage Pores and Layered Structure for Acoustic and Thermal Insulation DOI Open Access
Ran Yan, Wenfeng Qin,

Guochong Gong

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

ABSTRACT Aerogels are currently advanced multifunctional sound‐absorbing materials. Aramid nanofiber aerogels (ANFs) also possess lightweight and excellent thermal insulation properties, making them high‐performance materials for extreme environments with broad application prospects. In this study, aramid fibers were used as raw materials, which uniformly mixed surfactants cross‐linkers, followed by ultrasonic pulverization treatment to fabricate multilayered porous hierarchical composite (MPL‐ANFs). The results show that MPL‐ANFs not only retain the properties of ANFs but form a structure effectively absorbs sound. Specifically, surfactant‐to‐aramid fiber weight ratio 1:1 exhibit acoustic noise reduction coefficient 0.52 an average sound absorption 0.71. demonstrate flame retardant superior conductivity 0.0368 W/(m*K). After heating on 120°C heat plate, performance aerogel remains largely unchanged. This work significantly enhances potential novel broadening their

Language: Английский

Citations

1
Penetration mechanism of the emulsion-based rejuvenator in damaged porous asphalt mixture: Microstructure characterization and 3D reconstruction DOI Creative Commons
Jiwang Jiang, Zhen Leng, Bin Yang

et al.

Materials & Design, Journal Year: 2022, Volume and Issue: 221, P. 111014 - 111014

Published: Aug. 3, 2022

Porous asphalt (PA) pavement suffers from the early-stage raveling problem, which hinders wide application of this sustainable technology. Several promising attempts have been made to restore durability PA wearing courses by using surface treatment (ST) emulsions. However, working mechanism ST emulsion is still unclear. Therefore, study aims investigate penetration behavior in damaged PA. X-ray CT scanning was performed monitor changes pore microstructure specimens under three selected conditions. The spatial distribution residue back-calculated and 3D visualized through image analysis. coating efficiencies thickness distributions emulsions were quantitatively estimated characterize their status. analysis results showed that presents gradient characteristics with a deepest depth around 20 mm. reshaped interconnected-pore microstructure. specimen treated best efficiency thickest film performance recovery among outcomes are expected help optimize technology for PA, thus contributing more durable pavements.

Language: Английский

Citations

24
Recent Progress on Organic Aerogels for Sound Absorption DOI
Enyuan Hu,

Yingwen Zhu,

Xiao Min Cheng

et al.

Materials Today Communications, Journal Year: 2024, Volume and Issue: 39, P. 109243 - 109243

Published: May 14, 2024

Language: Английский

Citations

6
Correlation analysis of the gradation design parameters and mechanical performance of semi-flexible pavement DOI

Zijia Xiong,

Minghui Gong,

Jinxiang Hong

et al.

Construction and Building Materials, Journal Year: 2023, Volume and Issue: 404, P. 133206 - 133206

Published: Sept. 8, 2023

Language: Английский

Citations

7
Optimizing porous asphalt mix design for permeability and air voids using response surface methodology and artificial neural networks DOI
Mohammad Shahid Raza, Shashi Kant Sharma

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 442, P. 137513 - 137513

Published: July 27, 2024

Language: Английский

Citations

2
3D Cementitious composites printing with pretreated recycled crumb rubber: mechanical and acoustic insulation properties DOI Creative Commons
Xiangyu Wang,

Liangfen Du,

Zhenbang Liu

et al.

Virtual and Physical Prototyping, Journal Year: 2024, Volume and Issue: 19(1)

Published: Sept. 9, 2024

Language: Английский

Citations

1
Lightweight Composite Aramid Nanofiber Aerogel with Multistage Pores and Layered Structure for Acoustic and Thermal Insulation DOI
Ran Yan, Wenfeng Qin,

Guochong Gong

et al.

Published: Jan. 1, 2024

Aerogel is an advanced multifunctional sound-absorbing material currently. Aramid nanofiber aerogel (ANFs) also has both lightweight and excellent thermal insulation properties, can be used as a high-performance in extreme environments with broad application prospects. However, only nanoscale pores exist inside the ANFs prepared by traditional methods, making it difficult for sound waves to penetrate into ANFs, still challenge obtain acoustic absorption properties. In this work, aramid fibers were raw materials, multi-stage pore layered composite aerogels (MPL-ANFs) homogeneous mixing surfactants cross-linking agents, then treated ultrasonic cellular pulverization process. Light weight properties of are not retained , but macropores introduced while nanopores maintained form multistage structure that effectively absorb sound. The result shows MPL-ANFs 1:1 ratio surfactant have performance, noise reduction coefficient 0.52 average 0.71. flame retardant conductivity 0.0422 W/(m*K), performance remains largely unchanged after heating on hot plate at 120°C. This work significantly enhances possibility novel broadens its

Language: Английский

Citations

0
Acoustic properties of composites materials based on bentonite and coconut or cactus (nopal) fibers DOI
Uriel Victoria-Martínez, Sandra Loera‐Serna,

E. R. Vázquez-Cerón

et al.

Journal of Composite Materials, Journal Year: 2023, Volume and Issue: 57(20), P. 3173 - 3187

Published: June 16, 2023

Materials made from natural fibers or waste have been studied to acquire a composite with good acoustical isolation properties, commercial materials used in this concern are polyurethane foam, fiberglass, Rockwool, and drywall. This work proposes using coconut cactus ( Opuntia ficus-indica) synthesize bentonite composites study their physicochemical acoustic properties. Physicochemical properties of precursor (75% wt. fiber) were determined by XRD, FTIR, N 2 adsorption, optical, SEM microscopies. The transmission, reflection, absorption coefficients, 50 10,000 Hz, obtained an impedance tube compared materials. subjected surface humidity thermal (30, 50, 70°C) tests evaluate the stability mechanical improved addition bentonite, hardness is increased 6.7% 0.9%, density decreased 73.6% 45.5%, for nopal, respectively, porosity also changes. We corroborated significant presence montmorillonite (XRD), while nopal composed hemicellulose, cellulose, lignin (FTIR). Also, mucilage was identified samples as adherent biopolymer that generates either thermally wetting conditions. Coconut fiber has high coefficient (similar polyurethane), which reduced humidity. However, adding reflection more elevated, transmission lower than (fiber composite) presented coefficients function temperature.

Language: Английский

Citations

1
Correlation Analysis of the Gradation Design Parameters and Mechanical Performance of Semi-Flexible Pavement DOI

Zijia Xiong,

Minghui Gong,

Jinxiang Hong

et al.

Published: Jan. 1, 2023

Semi-flexible pavement has been widely used for ant-rutting performance and resistance in heavy load conditions. The asphalt mixture skeleton was the central part complex-skeleton material system. However, few studies have made on connection of composition semi-flexible material. Therefore, relationship between grade volumetric characteristic mechanical properties investigated. Eight gradations with different coarse aggregate contents were constituted. performances conducted to establish primary gradation performance. result shows that porosity matrix Cantabro abrasion test are related gradation. tensile performance, shear characteristics, compressive strength affected by voids filled (VFA), porosity, fine ratio (FB), respectively. Burgers model accurately reflected creep curves specimens. modulus VFA, effective content (Pbe). It is concluded can better meet design's adjusting controlling these indexes.

Language: Английский

Citations

0