Experimental Investigation of Moisture Sensitivity and Damage Evolution of Porous Asphalt Mixtures

Hu, Xinyu; Wang, Xiaowei; Zheng, Ning; Li, Qiang; Shi, Jinyue

doi:10.3390/ma14237151

Cited by 8 publications

(3 citation statements)

References 33 publications

(49 reference statements)

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“…In carrying out such a task, it is very important to be aware of specific issues relevant to this type of pavement, including durability and functionality. For example, a study by Hu et al [33] experimentally investigated the moisture sensitivity and damage evolution of porous asphalt mixtures, and their main finding was that, under long-term moisture damage, the moisture sensitivity of porous asphalt mixtures is a concern. They also found that tensile strength and resilience modulus decreased with the increasing loading cycles, and in order to extend the service life of porous asphalt mixtures, maintenance is needed when the decrement of these properties exceeds 60%.…”

Section: Pavement Adaptation In More Robust Materials and MIX Designmentioning

confidence: 99%

Addressing Climate Change Resilience in Pavements: Major Vulnerability Issues and Adaptation Measures

Saleh

Hashemian

2022

Sustainability

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Climate change is the one of the greatest challenges of our time, and it poses a threat to the surrounding built and natural environments. This review paper addresses climate change resilience in pavements by considering major vulnerability issues and adaptation measures. First, a review on foundational information of climate change related to transportation infrastructure is provided to bring all transportation professionals and practitioners to the same knowledge base on climate change terminology. Such information includes sources of climate information, climate scenarios, downscaling climate data, and uncertainty in climate projection information. Relevant climate stressors to pavements are discussed in some depth, including the most significant ones, which are increases in temperature and precipitation intensity. Thus, the proposed different engineering-informed adaptation measures relevant to the climate stressors of interest were evidence-based with reference to published peer-reviewed articles and case studies. Such adaptation solutions are related to monitoring pavement key performance parameters and pavement adaptations in structural design, robust materials and mix design, along with adaptation in maintenance, regulation, and construction. Efforts to adapt pavement systems to climate change are ongoing. In addition to such research works, this study concludes that impacts of adaptation measures on pavement and environment should be incorporated in the decision-making process in planning and design. This makes it important to integrate practical adaptation strategies in design and construction standards and guides, and implement awareness and education of climate change adaptation among engineers and practitioners.

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Section: Pavement Adaptation In More Robust Materials and MIX Designmentioning

confidence: 99%

Addressing Climate Change Resilience in Pavements: Major Vulnerability Issues and Adaptation Measures

Saleh

Hashemian

2022

Sustainability

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“…Furthermore, the water will also weaken the adhesion of the pavement layer with the bedding layer and the base layer, weakening the load transfer characteristics of the entire road base pavement system, thus leading to stripping, loosening, holes, potholes, and other diseases. This process is known as asphalt pavement moisture damage [ 2 , 3 ]. Some of the factors that result in the stripping of asphalt mixtures are the material characteristics [ 4 ], mixture voids and connectivity [ 5 ], and hydraulic washout [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Physicochemical Properties of Asphalt Modified by Different Anti-Stripping Agents and Their Moisture Susceptibility with Aggregates

Chen

et al. 2023

Materials

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Erosion and the stripping effect of moisture on asphalt mixtures is one of the main reasons for the shortened service life of asphalt pavements. The common mean of preventing asphalt pavements from being damaged by moisture is adding anti-stripping agents (ASAs) to asphalt mixtures. However, the effect regularity and mechanism of anti-stripping agents on the physicochemical properties of asphalt is not exactly defined. This study compared the physical properties of ASA-modified asphalt (AMAs) to determine the optimal dosage and investigated the rheological and adhesion properties. Based on the roller bottle method and water immersion method, the moisture susceptibility of AMAs with three particle sizes was investigated. The results showed that the modification of asphalt using anti-stripping agents was a physical modification. At the optimum dosage of anti-stripping agents (0.3%), the basic physical properties of AMA1 were the most desirable. ASA2 increased the resistance of asphalt for deformation at high temperature by 46%, and AMA3 had the best low-temperature performance. ASAs enhanced the dispersed and polar components in the asphalt binder, improving the adhesion energy of asphalt. AMA3 had the strongest adhesion to the aggregate, with an increase in adhesion work by 2.8 times and a 45% of increase in ER value. This was attributed to ASA3 containing with a large number of metal cations and polar functional groups. It was shown that ASAs provided the most improvement in the anti-stripping performance of asphalt mixtures with 9.5–13.2 mm particles. The amide ASA, phosphate ASA and aliphatic amine ASA improved the water damage resistance of asphalt by 65%, 45% and 78%, respectively. This study can help engineers realize the effects of different types of ASAs on the physicochemical properties of asphalt and select the most suitable type of ASAs according to the service requirements.

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“…Asphalt mixtures are granular materials, and their mechanical strength is generally considered to depend on the friction and embedding forces between the aggregate particles, the cohesion of the asphalt binder, and the bond between the asphalt and the aggregate [1]. Erosion due to water can damage the interface between asphalt and aggregate, reducing the adhesion of the asphalt bond [2][3][4][5], resulting in spalling and loosening and reducing the life of the asphalt pavement [6,7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effect of Filler on Cohesive Bond Strength of Asphalt Mastic Using Binder Bond Strength (BBS) Test

Kan

et al. 2023

Coatings

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Water damage leads to spalling and loosening of asphalt pavement, which is ultimately due to a reduction in the bond strength of the asphalt mastic. The filler, as an important component of the asphalt mastic, has a great impact on the various properties of the asphalt mastic and even the asphalt mix itself. Therefore, it is important to study the influence of fillers on the performance of asphalt mastic. In this paper, the various properties of twelve types of fillers, including mineral powder, mineral powder partially replaced with cement, slaked lime, and recycled powder, and their effects on the bond strength of asphalt mastic are investigated. Binder bond strength (BBS) was used to evaluate the performance of the different asphalt mastics. The moisture resistance of the asphalt mastic was evaluated by measuring the bond strength of the asphalt mastic after treatment in a water bath. A grey correlation analysis was then carried out to derive the relationship between the filler index and the bond strength of the asphalt mastic. The results show that the addition of slaked lime and cement helped to improve the moisture resistance of the asphalt mastic. The fineness modulus and other indicators have a great influence on the bond strength of asphalt mastic. The interaction between hydrothermal coupling and filler type has a non-negligible effect on the moisture resistance of the asphalt mastic.

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Experimental Investigation of Moisture Sensitivity and Damage Evolution of Porous Asphalt Mixtures

Cited by 8 publications

References 33 publications

Addressing Climate Change Resilience in Pavements: Major Vulnerability Issues and Adaptation Measures

Addressing Climate Change Resilience in Pavements: Major Vulnerability Issues and Adaptation Measures

Experimental Study on the Physicochemical Properties of Asphalt Modified by Different Anti-Stripping Agents and Their Moisture Susceptibility with Aggregates

Investigation of the Effect of Filler on Cohesive Bond Strength of Asphalt Mastic Using Binder Bond Strength (BBS) Test

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