Study Characteristics of Porous Asphalt Using Aggregates from Karangasem with 60/70 Penetration Bitumen DOI Creative Commons
I Gusti Agung Ananda Putra

Civilla Jurnal Teknik Sipil Universitas Islam Lamongan, Journal Year: 2022, Volume and Issue: 7(2), P. 205 - 205

Published: Oct. 31, 2022

Porous asphalt is a type of pavement designed to increase the coefficient friction on surface. The porous functions as drainage drain water in top layer vertically and horizontally. method used this research an experimental by making different tests laboratory. Stages works include examining 60/70 penetration bitumen, aggregate testing, mixing, preparation sample with variation level 5%, 5.5%, 6%, 6.5%, 7% 2x50 Marshall compaction. Volumetric measurement testing get optimum level. next test cantabro test, permeability ITS UCS at As results study, it was obtained that value 6.15%, characteristics, namely stability 636.32 kg (specification min. 500 kg), Flow 4.0 mm (specifications 2-6 mm), Quotient 159.15 kg/mm max. 400 kg/mm), VIM 19.828% 18-25%). At samples gave Cantabro 17.90% 20%), vertical horizontal values 0.145 0.152 cm/sec 0.1-0.5 cm/sec), 158.88 kPa, 916.343 kPa.

Language: Английский

Fire-Retarding Asphalt Pavement for Urban Road Tunnels: A State-of-the-Art Review and Beyond DOI Creative Commons
Xi Jiang,

Hehua Zhu,

Zhiguo Yan

et al.

Fire Technology, Journal Year: 2024, Volume and Issue: unknown

Published: March 19, 2024

Abstract With the rapid urbanization and development of metropolises, urban road tunnels have been constructed at an increasing rate, significantly alleviating traffic pressure, improving resilience. Fire hazards become a major threat to modern due growing popularity electric vehicles high-density transportation goods, particularly flammable materials. Asphalt pavements, as essential component tunnels, may release harmful effluences smoke under high temperatures, exacerbating fire adding risk life safety. It is hence critical investigate fire-retarding asphalt materials their potential use in pavements. This paper provides comprehensive review pavements for tunnel The covers generation mechanisms, evaluation methods, flame retardants recent developments retardant technologies. By investigating these aspects, this aims better understand flammability mixtures promote research flame-retardant technology, ultimately reduce damage loss caused by accidents. Additionally, study identifies limitations current outlook future contribute resilience structures longer service pavement semi-closed tunnels.

Language: Английский

Citations

25
Sustainable microwave-heating healing asphalt concrete incorporating functional aggregates and waste ferrite DOI
Dong Lu, Chaoliang Fu, Xi Jiang

et al.

Transportation Research Part D Transport and Environment, Journal Year: 2024, Volume and Issue: 129, P. 104117 - 104117

Published: Feb. 22, 2024

Language: Английский

Citations

20
Maintenance mechanisms of rejuvenator-optimized asphalt emulsion in damaged porous asphalt mixture: Morphological, physicochemical, and rheological characterizations DOI
Bin Yang, Jiwang Jiang, Zhen Leng

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 464, P. 140185 - 140185

Published: Jan. 30, 2025

Language: Английский

Citations

6
Dual responsive microwave heating-healing system in asphalt concrete incorporating coal gangue and functional aggregate DOI
Dong Lu, Xi Jiang, Zhen Leng

et al.

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 422, P. 138648 - 138648

Published: Sept. 2, 2023

Language: Английский

Citations

41
Multiscale characterization and modeling of aggregate contact effects on asphalt concrete’s tension–compression asymmetry DOI Creative Commons
Zhifei Tan, Bin Yang, Zhen Leng

et al.

Materials & Design, Journal Year: 2023, Volume and Issue: 232, P. 112092 - 112092

Published: June 15, 2023

Asphalt concrete (AC) exhibits significant tension–compression (TC) asymmetry and aggregate contacts can be one of the critical contributors to this behavior. Nevertheless, underlying mechanisms are still unclear, there has been no study quantify To fill research gap, multiscale characterization modeling on AC were performed in study. At microscale level, nanoindentation tests conducted characterize contact characteristics region (CR). The CR was found have a sandwich-like structure consisting two interfacial layers, large filler particles, asphalt mastic. Accordingly, micromechanical models developed predict its mechanical behavior tension compresison (T&C). results showed that significantly increase compressive modulus, leading substantial TC CR. predicted viscoelastic properties further applied mesostructural model AC. master curves T&C quantitatively agreed with experimental ones, demonstrating effectiveness adopted approaches. This is first asymmetric performance outcomes evaluate AC's effects pavement performance.

Language: Английский

Citations

14
Quantitative assessment of cement bridges and voids in cement-stabilized permeable base materials using a mask R-CNN-based CT image segmentation strategy DOI Creative Commons
Xiaoming Wang, Yuanjie Xiao,

Tao Yang

et al.

Materials & Design, Journal Year: 2024, Volume and Issue: 241, P. 112907 - 112907

Published: April 1, 2024

Accurate extraction of aggregates, cement bridges, and voids in permeable cement-stabilized base materials (PCBM) is a challenging task. This paper proposed segmentation reconstruction paradigm for raw CT slice images using mask regional convolutional neural network (Mask R-CNN). The results demonstrate that the method effectively segments reconstructs unclear images, providing convenient advanced tool accurately assessing meso-scale structures bridges PCBM prepared with different combinations content compaction force. An increased or force migration paste, leading to thicker localized blockage pore space. phenomenon further disrupts homogeneous distribution voids. tends elongate flatten throats, while an may clog voids, rendering them impermeable. vertical permeability significantly greater than horizontal permeability, which should be considered during material design optimization. could serve as reference microscopic analysis structural optimization PCBM.

Language: Английский

Citations

5
Diffusion characteristics of surface treatment emulsion in aged asphalt mortar of porous asphalt mixture through SEM/EDS analysis DOI
Bin Yang, Zhen Leng, Jiwang Jiang

et al.

International Journal of Pavement Engineering, Journal Year: 2024, Volume and Issue: 25(1)

Published: Feb. 13, 2024

Spaying surface treatment (ST) asphalt emulsion can be an effective preventive maintenance method to alleviate the ravelling problem of porous (PA) pavement. The applied ST may gradually diffuse in and soften aged mortar film PA, which however still lacks quantitative evidence. This study aims quantify diffusion behaviour new residue PA within 28 days curing. Scanning Electron Microscopy (SEM) with Energy Dispersive Spectroscopy (EDS) was utilised capture spatial distribution under different curing temperatures durations. Titanium dioxide selected as a tracer for emulsion. Diffusion degree (Dd), derived from counting Ti S elements, proposed depth mortar. It found that SEM/EDS is microscopic directly monitor phenomenon at mixture scale. rate 60oC about 5 times faster than 25oC, indicating spraying hot weather improve its efficiency. Besides, existence fine aggregates increase path due hindrance effect.

Language: Английский

Citations

4
Investigation of the Wet and Thermal Conditions Effect on the Micro-Scale Characteristics of Interfacial Transition Zone of Porous Asphalt Mixture DOI Open Access
Dong Zhao, Xiang Ma, Hao Wang

et al.

Coatings, Journal Year: 2023, Volume and Issue: 13(3), P. 566 - 566

Published: March 6, 2023

Complex environmental factors can significantly influence the micro-properties of porous asphalt (PA) mixture. Therefore, effects short-term and long-term thermal aging moisture immersion on micromechanics properties, micro-morphology, chemical element distributions interfacial transition zone (ITZ) PA mixture were studied to reveal mechanisms by which degradation impact performance means nanoindentation (NI), backscattering scanning electron microscope (BSEM), energy-dispersive X-ray spectroscopy (EDS) analysis techniques. The results show that ITZ is not softest part mixture, order modulus aggregate > mastic. thickness about 10–20 μm. Thermal has negligible effect width ITZ. With increasing degree, mastic increase, while water damage reduces slightly increases little morphology ITZ, will lead microcracks micropores in Compared with aging, a greater leads softening phase. obtained EDS line basically consistent nanoindentation. Overall, external have more significant mechanical properties than micro-morphology outcomes this research provide better understanding service environment microscopic characteristics

Language: Английский

Citations

9
Self-healing properties of steel slag asphalt mixture based on experimental characterization and 3D reconstruction DOI Creative Commons
Jianan Liu,

Zhenjun Wang,

Haosen Jing

et al.

Materials & Design, Journal Year: 2023, Volume and Issue: 234, P. 112358 - 112358

Published: Sept. 26, 2023

Asphalt pavement is susceptible to cracking which affects its service life. And self-healing technology helps heal micro-cracks in mixture at an early stage, but mechanism of action the mesoscale still unclear. Therefore, composition steel slag asphalt (SSAM) was designed, microwave heating performance, healing performance and road SSAM were investigated by laboratory experiments. Finally, scanned using X-ray CT for 3D reconstruction quantitative analyses. The results show that has obvious magnetic loss characteristics; surface temperature designed higher under obtain a better rate, meets specification requirements. damage-healing process mainly voids SSAM, can reduce fractal dimension proportion fissures; from index based on voids, average coordination number throat connected thereby improving reducing permeability. improved through compositional design; mesoscopic model void characteristics refine theory mixtures heating.

Language: Английский

Citations

8
Adhesion Properties of Recycled High-Viscosity Asphalt–Aggregate Interface under Dynamic Water Erosion DOI Open Access
Kang Zhao, Shijie Song, Yang Wei

et al.

Materials, Journal Year: 2023, Volume and Issue: 16(18), P. 6203 - 6203

Published: Sept. 14, 2023

The drainage of asphalt pavement requires the use a large amount high-viscosity-modified asphalt, which faces service environment under dynamic water erosion. feasibility recycling should be investigated to facilitate sustainable infrastructure construction. This study used ultrasonic equipment simulate erosion test conditions and tested adhesion performance different types recycled high-viscosity at various environmental temperatures. energy index microstructure were analyzed using contact angle AFM test. results demonstrate that higher temperature, worse anti-stripping asphalt. From perspective indicators, 6% agent dosage is more conducive restoring aged -modified showed represented significant changes with an increase in content, change force was consistent macroscopic tests. illustrates applicability implementing regeneration technology for pavement.

Language: Английский

Citations

7