Surface Free Energy Theory for Evaluating Moisture Damage in Expandable Polyurethane Grouting Materials

Wang, Chaojie; Zhao, Weifan; Guo, Chengchao; Du, Xueming; Pan, Yanhui; Gao, Jianglin; Gao, X. L.

doi:10.1002/adem.202200409

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…When THE asphalt binder is mixed with the aggregate, the energy released by the formation of the bonding interface is adhesion energy. Its calculation formula is shown in Equation (5) [ 29 , 30 ]. The release of energy when two asphalt molecular surfaces fuse to form an interface is defined as cohesive energy, which was calculated as shown in Equation (6) [ 31 ].…”

Section: Methodsmentioning

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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Section: Methodsmentioning

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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Experimental investigation on the compressive mechanical properties of the non-aqueous reacting polymer with AE and DIC techniques

Qin

Zhang

Sun

et al. 2023

Construction and Building Materials

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Evaluation on the Adhesion Property of Recycled Asphalt Based on the Multi-Scale Experiments

Yin,

Liu,

et al. 2024

Buildings

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The adhesion property has consistently been a critical focus in the utilization of recycled asphalt (RA). This research aimed to elucidate the mechanisms influencing the adhesion property of RA at various scales. Specimens of base asphalt (BA), aged asphalt (AA), and RA were systematically prepared. The impacts of aging and rejuvenators on the nano adhesion property of asphalt were assessed using multi-scale testing methods. The findings revealed that aging adversely affected the adhesive interaction between BA and aggregate, whereas the application of rejuvenators substantially improved this effect. When compared to acidic aggregate of granite, the alkaline aggregate of limestone demonstrated superior adhesion properties with RA. Moreover, the correlation analysis affirmed that mechanical testing across various scales consistently evaluated the trends in the adhesion property of RA with aggregates.

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Surface Free Energy Theory for Evaluating Moisture Damage in Expandable Polyurethane Grouting Materials

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adem.202200409.

Cited by 5 publications

References 26 publications

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

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

Experimental investigation on the compressive mechanical properties of the non-aqueous reacting polymer with AE and DIC techniques

Evaluation on the Adhesion Property of Recycled Asphalt Based on the Multi-Scale Experiments

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