Quantification of moisture sensitivity of warm mix asphalt using image analysis technique

Hamzah, Meor Othman; Kakar, Muhammad Rafiq; Quadri, S. A.; Valentin, Jan

doi:10.1016/j.jclepro.2013.12.072

Cited by 63 publications

(17 citation statements)

References 24 publications

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“…The stripping phenomenon has been firmly attributed to the presence of residual water as a principal consequence of adhesion failure of bitumen onto aggregates [20][21][22][23]. It has also been ascertained that mineralogy (rock chemical composition), surface texture, absorption, surface ageing, surface coatings, and particle shape can affect the efficiency of an adhesive bond in an asphaltaggregate mixture [24,25].…”

Section: The Structure Of Bitumen and Its Interaction With Mineral Agmentioning

confidence: 99%

Adhesion Promoters in Bituminous Road Materials: A Review

Rossi

Teltayev²,

Angelico

2017

Applied Sciences

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Featured Application:The adhesion between aggregate and bitumen is crucial in asphalt pavements and has a strong influence on the service time of the road. Thus, the addition of adhesion promoters is gaining importance, particularly with regard to emerging and more sustainable technologies for asphalt production, which aim to reduce the working temperature, save energy, and guarantee the safety of specialized personnel. The present work offers an overview on physical and chemical properties of most common types of adhesion promoters currently used in asphalt industry and tries to build a bridge between scientific research and technological application.Abstract: This review focuses on certain classes of organic compounds known variously in the specific literature of asphalt as adhesion promoters, antistripping agents, wetting agents, antistrips, or adhesion agents. These kinds of organic additives are currently formulated to enhance the bitumen coating of mineral aggregates and improve the workability of asphalt mixtures. In this review, the term "adhesion promoters" includes both synthetic organic compounds as well as those extracted from natural resources, mixed in trace amounts to bitumen. Their main role is to alter the interfacial energy, so that the presence of water, even in trace, does not weaken the bitumen-aggregate bond and tends to favor adhesion. The report also considers the chemical functionalities that play a predominant role in bonding, as well as the effects of surface modification of the aggregate due to the presence of adhesion promoters in pre-blended bituminous mixtures. Although bitumen is widely used in road pavement construction and the discussion is mainly addressed to the improvement of adhesion in road materials, adhesion and wetting properties can also represent a general issue in various bitumen-based industrial products.

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Section: The Structure Of Bitumen and Its Interaction With Mineral Agmentioning

confidence: 99%

Adhesion Promoters in Bituminous Road Materials: A Review

Rossi

Teltayev²,

Angelico

2017

Applied Sciences

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“…Indirect tensile stress ratio (TSR), stripping inflation point from immersion wheel tracking test, surface free energy method and measuring contact angle, pull-off tests, boiling test and all mechanical tests conducted on both dry and wet samples can be used for evaluation of moisture susceptibility (Shu et al 2012). Moisture sensitivity of asphalt mixtures can also be quantified using image analysis technique (Hamzah et al 2014). The effects of WMA additives on the moisture sensitivity of asphalt mixtures depends on many regional factors (climate, aggregate type and asphalt binder source) and pavement conditions (traffic loading and general pavement integrity) (Bennert 2012a).…”

Section: Resistance To Moisture Damagementioning

confidence: 99%

Evaluation of Rediset for use in warm-mix asphalt: a review of the literatures

Hamzah

Golchin

Jamshidi

et al. 2014

International Journal of Pavement Engineering

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This literature review paper presents the effects of a chemical warm mix additive, named Rediset on the rheological properties of asphalt binders, laboratory performance of asphalt mixtures, field behaviour of constructed road sections, energy consumption and air pollution, physicochemical properties of asphalt binders and behaviour of asphalt mortar. The rheological effects of Rediset on asphalt binder were evaluated from the viewpoint of very high temperature properties (viscosity of asphalt binder and workability of asphalt mixtures), high temperature properties (rutting resistance of asphalt binders and mixtures), intermediate temperature (fatigue behaviour) and also low temperature cracking properties. Other topics such as the mechanisms of temperature reduction by Rediset, storage stability of Rediset modified binders, moisture susceptibility, mix design issues, volumetric properties and economic benefits were also investigated. The information reported in this paper will help decision makers to appropriately select, apply and evaluate this warm additive type. In addition, researchers can identify gaps in existing knowledge for future research.

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“…e analysis results show that the area of adhesion failures increased with the increase of freeze-thaw cycles. e mixtures with PG-76 binders exhibited lower failure areas compared to mixtures with PG-64 binders [37]. Alvarez focused on the analysis of the internal structure of WMA samples with three additives using both Superpave gyratory compactor (SGC) and Texas gyratory compactor.…”

Section: Introductionmentioning

confidence: 99%

Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X‐Ray Computed Tomography (CT) Technology

Yao

Yuan

et al. 2019

Advances in Civil Engineering

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The warm mix asphalt was fabricated with different moisture contents (0%, 1%, 2%, and 3%) of limestone aggregates using the Superpave gyratory compactor. The moisture susceptibility of asphalt mixtures with an organic wax additive RH was studied. The samples were compacted and tested using the modified Lottman test AASHTO T283, and the X-ray computed tomography technology was used to capture the internal structure images before and after the freeze-thaw cycles. The test results show that the air voids were distributed in the size range of 0–5 mm3 and 5–10 mm3. The number of air voids decreased with the increase of air void size and increased after freeze-thaw cycles. The air void content can be influenced by the residual moisture in aggregates. The higher the moisture content of aggregates is, the larger the air void content is. So, the air void content is likely to be sensitive to moisture damage. The increase ratio of the air void and moisture content of aggregates had good correlation with the indirect tensile strength and tensile strength ratio of the samples. The indirect tensile strength and tensile strength ratio of the samples decreased linearly, and the samples were sensitive to the moisture damage with the increases of increase ratio of the air void/moisture content in aggregates.

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Quantification of moisture sensitivity of warm mix asphalt using image analysis technique

Cited by 63 publications

References 24 publications

Adhesion Promoters in Bituminous Road Materials: A Review

Adhesion Promoters in Bituminous Road Materials: A Review

Evaluation of Rediset for use in warm-mix asphalt: a review of the literatures

Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X‐Ray Computed Tomography (CT) Technology

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