Estimating Moisture Resistance of asphalt mixture containing epoxy resin using Surface Free Energy Method and Modified Lottman test

Bahmani, Hossein; Sanij, Hamed Khani; Peiravian, Farideddin

doi:10.1080/10298436.2021.1904236

Cited by 17 publications

(6 citation statements)

References 28 publications

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“…Superior moisture resistance for EAM than conventional asphalt mixture has generally been reported [91,94,148], probably due to the strong adhesion between EA and aggregates [151]. For mixtures with limestone aggregates, the enhanced moisture resistance was attributed to the increased adhesion between bitumen and aggregates while it was attributed to improved adhesion between aggregates and bitumen as well as the increased wetting of bitumen on aggregates surfaces for mixtures with siliceous aggregates [160]. Moisture…”

Section: Water Damagementioning

confidence: 91%

“…It was found that the contact angle between EA and water was higher than 90° [ 145], indicating its hydrophobic nature; the contact angle was found to increase with the increase of ER content and curing time [112,113]. In addition, the surface energy was also found to increase with the increase of ER content [113,160] and curing time up to 120 min [112].…”

Section: Water Damagementioning

confidence: 94%

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Application of Epoxy‐Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Chen

Hossiney

Yang

et al. 2021

Advances in Materials Science and Engineering

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One of the failure mechanisms associated with asphalt paving layers, especially on steel deck bridges, is large permanent deformation, which adversely affects its long-term performance in service. Thus, epoxy resin was introduced in asphalt paving industry to tackle permanent deformation of asphalt mixtures due to its thermosetting nature. In this review, epoxy resin as a dominant component of the epoxy-asphalt composite system was first considered, followed by a discussion on its curing methods and curing mechanism. Furthermore, the physicochemical property and mechanical performance of epoxy asphalt and epoxy asphalt mixture were thoroughly examined. Crosslink density of epoxy asphalt dictates its viscosity and thus the allowable construction time. Phase separation and dispersion of asphalt particles in the epoxy matrix was observed for epoxy-asphalt composite, and it showed superior elastic behavior and deformation resistance capability when compared with conventional asphalt materials. Furthermore, epoxy asphalt mixture exhibited significantly higher compressive strength, much better rutting resistance, and superior durability and water resistance properties. However, its low-temperature cracking resistance was slightly compromised.

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Section: Water Damagementioning

confidence: 91%

Section: Water Damagementioning

confidence: 94%

Application of Epoxy‐Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Chen

Hossiney

Yang

et al. 2021

Advances in Materials Science and Engineering

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show abstract

“…The excellent rutting performance of EAM prevents rapid failures due to moisture because of the high bonding between the aggregate and EAM. Furthermore, moisture sensitivity of EAM increases due to the binder and aggregates adhesion as well as increasing the wettability of the aggregate particles surface with binder (Bahmani et al 2021). As discussed earlier, the cured samples should be tested because EAMs without sufficient curing show misleading results.…”

Section: Ruttingmentioning

confidence: 99%

Rheological characteristics of epoxy asphalt binders and engineering properties of epoxy asphalt mixtures – state-of-the-art

Jamshidi

White

Kurumisawa

2021

Road Materials and Pavement Design

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The asphalt industry is aiming to produce high quality materials and efficient technologies for pavement construction. One such technology that attracts attention is epoxy asphalt. This paper discussed the concepts, theories, and engineering properties of epoxy asphalt technology and products. As the initial step, the chemical structure of epoxy materials was explained. Then principles of epoxy asphalt technology were discussed. Subsequently, the rheological characteristics of epoxy asphalt binder (EAB) were characterized. Engineering properties of an epoxy asphalt mixture (EAM) were then evaluated. The results indicated that EAB has better rheological properties than the traditional modified and net asphalts. Moreover, the results showed that superior structural performance of EAM compared with the traditional hot and warm mixtures. However, recyclability, initial strength, and total cost of the pavement construction remain matters of concern.

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“…A number of laboratory tests have been developed over the years to determine the moisture susceptibility of bituminous compounds. They include the modified Lottman test, Tunnicliff and Root method, Hamburg wheel tracking, asphalt pavement analyzer, saturation ageing tensile stiffness (SATS), Marshall immersion test, resilient modulus test, and immersion-compression test [11][12][13][14]. Nevertheless, these approaches are not able to examine fundamental features of materials to predict adhesion and wetting ability of each bitumen-aggregate composition [15].…”

Section: Introductionmentioning

confidence: 99%

Influence of Mixing Conditions of Modified Bitumen on Moisture Sensitivity of Asphalt Compounds

2022

IJE

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Modification of bitumen allows an improving the properties of bitumen, which can be a useful technique to enhance asphalt's characteristics. Therefore, this research intended to study the effect of mixing time of different percentages of epoxy resin, between 0 to 8%, doped into bitumens on the moisture sensitivity of asphalt compounds containing two types of aggregates, i.e. limestone and siliceous. For this aim, the Sessile Drop Method (SDM) was employed, and moisture resistant parameters associated to surface free energy concept such as surface free energy components, work of cohesion, work of adhesion, work of debonding, adhesion bitumen to aggregate, and wetting bitumen around aggregate surface were assessed. The results revealed that the effect of the mixing time of bitumen and epoxy resin on moisture resistance properties of asphalt compounds significantly depends on the percentage of epoxy resin used in bitumen mixture. For bitumens with 4 and 6% epoxy resin, adhesion and wetting parameters had a similar performance for both mixing times of 10 and 60 minutes. However, asphalt compounds containing 2 and 8% epoxy resin modified bitumens prepared for 10 min mixing time had a better adhesion and wetting performance than those prepared for the longer mixing time, 60 minutes. The effect of mixing time of bitumen modified with epoxy resin on the bitumen and asphalt compound' performance depend on the percent of additive in the bitumen.

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Estimating Moisture Resistance of asphalt mixture containing epoxy resin using Surface Free Energy Method and Modified Lottman test

Cited by 17 publications

References 28 publications

Application of Epoxy‐Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Application of Epoxy‐Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Rheological characteristics of epoxy asphalt binders and engineering properties of epoxy asphalt mixtures – state-of-the-art

Influence of Mixing Conditions of Modified Bitumen on Moisture Sensitivity of Asphalt Compounds

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