Effect of initial damage on healing characteristics of bituminous mixtures containing reclaimed asphalt material (RAP)

Mullapudi, Ramya Sri; Noojilla, Satya Lakshmi Aparna; Kusam, Sudhakar Reddy

doi:10.1016/j.conbuildmat.2020.120808

Cited by 10 publications

(2 citation statements)

References 32 publications

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“…Water is one of the main factors causing various types of distresses in the early service stage of asphalt pavement [ 1 ]. It is well accepted that there are two main forms of damage caused by water to asphalt pavement [ 2 ]; one is to weaken the adhesion between asphalt and aggregates, and the other is to deteriorate the internal cohesion of asphalt [ 3 , 4 , 5 ]. Water not only causes loss of cohesion, but also decreases the adhesion between asphalt and aggregate, and this decrease in adhesion affects many properties of asphalt pavements [ 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Water Stability of Fibers-Enhanced Asphalt Mixtures under Static and Dynamic Damage Conditions

Xiao,

Wang,

Chen

et al. 2024

Materials

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Water damage is one of the major distresses of asphalt pavements. Existing methods for investigating the water stability of asphalt mixtures rely primarily on static water test methods, the tensile strength ratio (TSR) test, and the retained Marshall stability (RMS) test, which evaluate the strength and stability loss after freeze-thaw damage or hot water immersion, respectively. However, these methods do not accurately replicate the actual dynamic water damage conditions to pavement. Therefore, in this study, a variety of damage conditions, including static water conditions and dynamic water pressure conditions, were used to investigate the effects of lignin fibers (LFs), polyester fibers (PFs), and polypropylene fibers (PPFs) on the water stability of asphalt mixtures. First, three fibers-enhanced SMA gap-gradation asphalt mixtures were designed. Then, TSR and RMS were measured under traditional static water damage conditions and new dynamic water pressure damage conditions to evaluate the effect of fiber types on the water stability of asphalt mixtures. Finally, the void rate of asphalt mixtures and its changes under dynamic water damage conditions were further revealed with the help of CT scanning technique. Results showed that, among these three types of fibers, PFs-enhanced asphalt mixture exhibited excellent stability under both static and dynamic water conditions, and the CT scanning test also indicated that the PFs can significantly reduce the increase rate of voids in asphalt mixtures after dynamic water pressure damage. This study identified the potential of incorporating suitable type of fiber to enhance the performance of asphalt mixture under dynamic water pressure damage.

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Section: Introductionmentioning

confidence: 99%

Water Stability of Fibers-Enhanced Asphalt Mixtures under Static and Dynamic Damage Conditions

Xiao,

Wang,

Chen

et al. 2024

Materials

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“…The utilization of reclaimed asphalt pavement (RAP) provides a particularly preferable alternative to the construction of asphalt pavements due to the significant amount of aggregate and asphalt binder contained in RAP material, miraculously saving an abundant number of natural and financial resources, which is environmentally friendly and economical [ 1 ]. However, rejuvenated asphalt pavement is predisposed to fatigue cracking, and its fatigue life is generally associated with the properties of both mixture and asphalt binder, and the gradation and environmental factors [ 2 , 3 , 4 ]. According to the research of French Laboratoire Central des Ponts et Chaussées (LCPC), the fatigue failure of asphalt mixtures was predominantly caused by cracking or damage to asphalt binder [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Research on the Fatigue Properties of Rejuvenated Asphalt Prepared by Waste Cooking Oil Pre-Desulfurized Crumb Tire Rubber

et al. 2023

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Fatigue cracking has hitherto been a crucial constraint on the development of reclaimed asphalt pavements attributed to the performance of rejuvenated asphalt binder. Therefore, it is extremely significant to evaluate the fatigue performance of rejuvenated asphalt precisely and objectively and to improve the fatigue life of rejuvenated asphalt binders. With preceding research in our group, this paper investigated the fatigue properties of waste rubber/oil (WRO) rejuvenated asphalt and universal rejuvenated asphalt by dynamic shear rheometer test (DSR). The applicability of common fatigue life evaluation indexes and the response to internal and external influences on the fatigue performance of rejuvenated asphalt were analyzed. It is demonstrated that Np20 corresponding to the mutagenesis of phase angle is physically significant and independent of the parameters including rejuvenator type, loading mode and loading level, which was recommended as the evaluation index for fatigue life of rejuvenated asphalt in this paper. The fatigue performance of both WRO and universal rejuvenated asphalt is found to decrease with loading frequency and loading level, but the fatigue life of WRO rejuvenated asphalt is comparatively superior to the latter, particularly at high loading frequencies and levels. Influenced by waste tire crumb rubber (WTCR), increasing the proportion of WTCR can improve the fatigue life of rejuvenated asphalt. When compared to other rejuvenated asphalt, RWRO@55 rejuvenated asphalt shows better fatigue performance and its fatigue life rebounds at high loading frequency. Consequently, the recommended mastic–oil ratio is 5:5. However, when the rheological recoverability compensation is considered, the fatigue lifetime evaluation of rejuvenated asphalt will be changed significantly, and therefore the fatigue performance evaluation of rejuvenated asphalt should consider the influence of rheological recoverability to develop a comprehensive evaluation system.

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Influence of Binder Chemical Properties on the Elastic Properties of Asphalt Mixes Containing RAP Material

Mullapudi

Bulusu

Kusam

2022

Advances in Sustainable Materials and Resilient Infrastructure

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Effect of initial damage on healing characteristics of bituminous mixtures containing reclaimed asphalt material (RAP)

Cited by 10 publications

References 32 publications

Water Stability of Fibers-Enhanced Asphalt Mixtures under Static and Dynamic Damage Conditions

Water Stability of Fibers-Enhanced Asphalt Mixtures under Static and Dynamic Damage Conditions

Research on the Fatigue Properties of Rejuvenated Asphalt Prepared by Waste Cooking Oil Pre-Desulfurized Crumb Tire Rubber

Influence of Binder Chemical Properties on the Elastic Properties of Asphalt Mixes Containing RAP Material

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