Chemical and Performance Characteristics of Rejuvenated Bituminous Materials with High Reclaimed Asphalt Content

Guduru, Gurunath; Goli, Arun Kumar; Matolia, Sourabh; Kuna, Kranthi

doi:10.1061/(asce)mt.1943-5533.0003540

Cited by 17 publications

(7 citation statements)

References 29 publications

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“…For all the binders tested, there was a small difference between unaged and STA with regard to the formation of the sulfoxide band, while LTA had a clear effect. Based on previous studies [4,8,9,31,32,41,42], the formation and increase in the carbonyl index is observed after both STA and LTA for all binders. Formation of the carbonyl band centered around 1694 cm −1 is calculated, and as can be seen in Figure 8, the oxidation due to STA and LTA leads to an increase in the functional carbonyl group.…”

Section: C=o =supporting

confidence: 59%

The Effect of Ageing on Chemical and Strength Characteristics of Nanoclay-Modified Bitumen and Asphalt Mixture

et al. 2021

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This study was conducted to investigate the effect of ageing on bitumen, before and after modification. Nano-clay modified bitumen (NCMB) was produced by adding nano-clay (NC) to 60/70 penetration grade bitumen; then, the binder was tested using conventional tests for properties such as penetration, softening point and viscosity. These tests were carried out on the modified binder before and after ageing. A rolling thin film oven (RTFO) was used to simulate short-term ageing (STA), and a pressure ageing vessel (PAV) was used to simulate long-term ageing (LTA) for the modified binder. After initial results showed an improvement for the modified bitumen regarding the effect of ageing, the investigation continued using Fourier transform infrared spectroscopy (FTIR), where the microstructure distribution of the modified binder before and after ageing was observed. Finally, there was no doubt that the effect of ageing on mixtures should be investigated. For this step, the indirect tensile strength (ITS) test, which highlights the strength changes that occur for the mixtures after ageing, was selected. The results indicated that the tensile strength of mixtures made with modified bitumen showed better resistance against ageing when NC was added, which is in good agreement with the results of previous binder tests. The results of this study show that the modification of bitumen using nano-clay as an additive improves the ageing resistance of the binder, which is consequently reflected in the strength of the asphalt mixture.

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Section: C=o =supporting

confidence: 59%

The Effect of Ageing on Chemical and Strength Characteristics of Nanoclay-Modified Bitumen and Asphalt Mixture

et al. 2021

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“…According to the 19 documents obtained from the search Eqs. ( 2) -( 4) mentioned in Table 2, the most used method for incorporating the oil is the mixing method, which was mentioned in 11 of the articles [1,2,[32][33][34][35][36][37][38][39][40] Regarding the oil content range, the dose and type of rejuvenating agent must be adequate to produce an asphalt mixture. Some authors have confirmed that the dose of rejuvenator should be carefully selected considering the virgin binder properties and the RAP binder since their interaction influences the final performance of the asphalt mixture [1,2,41].…”

Section: Ranges and Appropriate Methodology For Rap Rejuvenationmentioning

confidence: 99%

“…These changes are due to alteration of the asphalt chemical composition, i.e., reduction of the asphaltene/maltene proportion. This does not mean that the asphaltene/maltene composition is restored to its original value in the virgin asphalt state [1,4,[5][6]34].…”

Section: Ranges and Appropriate Methodology For Rap Rejuvenationmentioning

confidence: 99%

“…Of the 19 articles found in the SLR mentioned in Table 2 in the search Eqs. ( 2) -( 4), 3 articles used the Superpave method [44][45][46], 6 articles used the Marshall method [2,4,34,38,41,45] and 10 articles did not perform paving as their approach was the asphalt-oil mixture.…”

Section: Preparation Of New Hot Asphalt MIX Incorporating Rap Rejuven...mentioning

confidence: 99%

“…The proposed procedure to prepare hot asphalt mixtures is presented in Fig. 2 according to the review of 6 articles that proposed the Marshall method [2,4,34,38,41,45] and the INVIAS INV E-748-13 standard [19].…”

Section: Mixture Preparationmentioning

confidence: 99%

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Theoretical analysis of waste cooking oil rejuvenator in reclaimed asphalt for sustainable hot asphalt mix preparation at the Área Metropolitana de Bucaramanga

Peñaloza

Vásquez²,

Valdivieso³

et al. 2022

DYNA

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Reusing reclaimed asphalt pavements (RAPs) provides economic, social, and environmental benefits. To improve the performance of these materials, rejuvenating agents such as waste cooking oil (WCO) have been implemented. The annual amounts of RAP and WCO available in the Área Metropolitana de Bucaramanga (AMB) were calculated to be 32 thousand and 22 thousand tons per year, respectively. Subsequently, international standards were reviewed and compared with Colombian regulations to establish a methodology to determine the appropriate percentage of WCO to add to RAP for hot asphalt mix preparation. The authors suggest investigating WCO levels from 3% to 6% and selecting the percentage that reestablishes the penetration grade (INV-E-706-13), softening point (INV-E-712-13), and viscosity (INV-E-717 -13) of asphalt binder. For hot asphalt mix preparation, the authors propose using the Marshall method and determining the appropriate percentage of asphalt according to stability and flow tests (INV-E-748-13), percent air voids (INV-E-736-13), and bulk density (INV-E-733-13).3).

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Effect of optimum rejuvenator dosage on the performance of 100% recycled asphalt binder

Aeron,

Saboo,

Aggarwal

2023

Mech Time-Depend Mater

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Chemical and Performance Characteristics of Rejuvenated Bituminous Materials with High Reclaimed Asphalt Content

Cited by 17 publications

References 29 publications

The Effect of Ageing on Chemical and Strength Characteristics of Nanoclay-Modified Bitumen and Asphalt Mixture

The Effect of Ageing on Chemical and Strength Characteristics of Nanoclay-Modified Bitumen and Asphalt Mixture

Theoretical analysis of waste cooking oil rejuvenator in reclaimed asphalt for sustainable hot asphalt mix preparation at the Área Metropolitana de Bucaramanga

Effect of optimum rejuvenator dosage on the performance of 100% recycled asphalt binder

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