Evaluation of the Durability and the Property of an Asphalt Concrete with Nano Hydrophobic Silane Silica in Spring-Thawing Season

Guo, Wei; Guo, Xuedong; Sun, Mei; Dai, Wenting

doi:10.3390/app8091475

Cited by 9 publications

(7 citation statements)

References 23 publications

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“…And the increase in the number of potholes due to natural causes (e.g., due to weather conditions) is arguably exogenous to digital public engagement other than reporting potholes. The engineering and material science literature (Gilmore et al 1985;Guo et al 2018) identifies the frequency of freeze-soak-scour cycles in the spring-thawing season as the main cause of pavement damage in the areas affected by winter frost. Moscow's geographical location and exposure to harsh winters make the city an ideal case for this particular factor affecting local road quality.…”

Section: Appendix Tablementioning

confidence: 99%

Political Dividends of Digital Participatory Governance: Evidence from Moscow Pothole Management

Gorgulu¹,

Sharafutdinova²,

Steinbuks³

2020

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The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings, interpretations, and conclusions expressed in this paper are entirely those of the authors. They do not necessarily represent the views of the International Bank for Reconstruction and Development/World Bank and its affiliated organizations, or those of the Executive Directors of the World Bank or the governments they represent.

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Section: Appendix Tablementioning

confidence: 99%

Political Dividends of Digital Participatory Governance: Evidence from Moscow Pothole Management

Gorgulu¹,

Sharafutdinova²,

Steinbuks³

2020

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“…As per the method described above, a complete F-T cycle was completed [48]. Then, after 1, 2, 3, 5, 10, 20 and 30 F-T cycles, damaged samples were collected for physicochemical property test to explore the deteriorating performance of water-foamed asphalt under the freeze-thaw cycle environment.…”

Section: Freeze-thaw Cycle Proceduresmentioning

confidence: 99%

Laboratory Investigation on Physical, Rheological Thermal and Microscopic Characteristics of Water-Foamed Asphalt under Three Environmental Conditions

Guo

Li³

et al. 2020

Coatings

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Applications of water-foamed binders have received widespread attention due to its environmental and economic benefits. This study aims to evaluate the properties of water-foamed asphalt under three environmental conditions (high-temperature evaporation, low-temperature frozen and the freeze–thaw cycle). Conventional physical properties tests, dynamic shear rheometer test (DSR), differential scanning calorimetry test (DSC) and scanning electron microscope test (SEM) are employed to assess the physical, rheological thermal and microscopic characteristics of samples. Conventional physical properties test results showed that the performance of a foamed binder had declined under three environmental processes and the foamed asphalt gradually returned to the characteristics before being foamed, with the increase of process time. A comprehensive evaluation index, deterioration degree was proposed based on the test results and entropy theory, and the deterioration process of the foamed binder under three environmental conditions was quantified. Moreover, freeze–thaw (F–T) cycles had been proved to have the most significant influence on the performance of a foamed binder among three environmental factors, which was a key issue that limits the application and promotion of foamed asphalt in seasonal frozen regions. The DSR test showed that the resistance to high-temperature permanent deformation of the foamed binder was improved after F–T cycles, and the fatigue resistance became worse. The sensitivity analysis of complex modulus and frequency illustrated that foamed asphalt after F–T cycles were more sensitive to the loading frequency and less sensitive to the temperature. The DSC test indicated that the thermal stability of foamed asphalt was improved after F–T cycles. The disappearance of circular “cavitation” observed through SEM test revealed that moisture of foamed asphalt was gradually precipitated and self-healing phenomenon occurred during F–T cycles.

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“…The R group can react strongly with different matrix resins or organic materials, such as vinyl, epoxy, sulfhydryl, amino, etc. [24,25].…”

Section: Nano Hydrophobic Silane Silicamentioning

confidence: 99%

Laboratory Assessment of Deteriorating Performance of Nano Hydrophobic Silane Silica Modified Asphalt in Spring-Thaw Season

Guo

Chen

et al. 2019

Applied Sciences

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In the seasonal frozen regions, freeze-thaw (F-T) damage is the main pavement damage, causing a variety of poor conditions in bitumen pavement, such as cracks, pits, potholes, and slush. In previous studies, we evaluated the effect of nano hydrophobic silane silica (NHSS) on the degradation of asphalt mixture under F-T cycles, and established the damage model of NHSS modified asphalt mixture in spring-thawing season. To gain more understanding of the influence of NHSS on asphalt in spring-thawing season, NHSS modified asphalt was systematically analyzed under F-T aging process in this study. The main research objective of this paper was to investigate the deteriorating properties of NHSS modified asphalt under Freeze-thaw aging process. Within this article, the physicochemical characteristics of NHSS modified asphalt were determined by using various laboratory tests, which included basic property test, dynamic shear rheometer test (DSR), Fourier transform infrared spectroscopy test (FTIR) and thermogravimetric analysis (TGA). The results showed that the incorporation of NHSS could inhibit the F-T aging process of asphalt. Moreover, the chemical composition and thermal stability of asphalt under F-T aging process was analyzed through FITR and TGA test parameters. The results illustrated that the sulfoxide functional groups content index was more suitable for evaluating the aging degree of asphalt in the spring-thawing season and the F-T aging process had a great impact on the thermal property of NHSS modified asphalt.

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Evaluation of the Durability and the Property of an Asphalt Concrete with Nano Hydrophobic Silane Silica in Spring-Thawing Season

Cited by 9 publications

References 23 publications

Political Dividends of Digital Participatory Governance: Evidence from Moscow Pothole Management

Political Dividends of Digital Participatory Governance: Evidence from Moscow Pothole Management

Laboratory Investigation on Physical, Rheological Thermal and Microscopic Characteristics of Water-Foamed Asphalt under Three Environmental Conditions

Laboratory Assessment of Deteriorating Performance of Nano Hydrophobic Silane Silica Modified Asphalt in Spring-Thaw Season

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