Evaluation of Mixture Performance Recycled Asphalt Pavement Materials as Base Layer with or without Rejuvenator into the Asphalt

Alaye, Quirin Engelbert Ayeditan; Xue, Ling; Zhang, Dong; Bambou, Ghislain

doi:10.1007/s11595-020-2295-4

Cited by 16 publications

(2 citation statements)

References 52 publications

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“…Li [12] compared the mechanical characteristics of semi-rigid pavement and flexible pavement and obtained the influence law of different structural layer thicknesses on pavement load and the mechanical response law and trend of asphalt pavement structural layer. Through a lot of research on the mechanical properties of base layer material, the load capacity of base layer material was constantly optimized and improved, which was conducive to reducing transverse shrinkage cracking of asphalt pavement [13,14]. However, there are differences between laboratory experimental research and engineering service environmental conditions, and the laboratory test indexes of base layer material have certain limitations.…”

Section: Introductionmentioning

confidence: 99%

Effect of Asphalt Pavement Base Layers on Transverse Shrinkage Cracking Characteristics

et al. 2023

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Transverse shrinkage cracking is considered to be one of the main factors leading to the degradation of sustainable service performance for asphalt pavement, but the effect of base layers on it is rarely studied. To investigate the effect of asphalt pavement base layers on transverse shrinkage cracking characteristics, this study analyzed and evaluated it through the test section data. The transverse shrinkage cracking test section data of four different asphalt pavement base layers were compared, and the variation characteristics of transverse shrinkage cracking under the influence of the base layer types and temperature were analyzed. Based on the conventional characteristics, the concept and calculation method of cracking area ratio (CAR) was proposed, and its rationality and accuracy were proved by calculation. It has been found that the CAR can reflect the longitudinal shrinkage performance of asphalt pavement. The shrinkage rate of a semi-rigid base is larger, while the shrinkage performance of a flexible base is better, and the shrinkage performance of the whole pavement is not affected by a small amount of cement. The research provides a practical basis for improving the anti-cracking performance of asphalt pavement and helps to enhance its sustainable service performance.

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Section: Introductionmentioning

confidence: 99%

Effect of Asphalt Pavement Base Layers on Transverse Shrinkage Cracking Characteristics

et al. 2023

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“…They are extraction of raw materials, construction of road, using of road and end of its life [10]. Now a days people are focusing on the exploration of various sustainable options for the construction of asphalt pavement such as its reusing, extending its lifetime [11], using recyclable materials in road construction [12], reducing of friction in between pavement and wheels of the vehicle [13]. Now a days reclaimed asphalt pavement is considered as standard asphalt pavement practice.…”

Section: Introductionmentioning

confidence: 99%

Effect of asphalt pavement construction on the environment of Ethiopia

Rath¹

2022

Res. Eng. Struct. Mater.

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Nowadays road construction is rapidly increasing on-demand to meet several medium and long terms development programs. A huge amount of natural resources, types of machinery and fuels are used in road construction. Using material resources and fuel an efficient manner, reducing in emission of greenhouse gases and controlling various impacts on the environment are important tasks in the road construction industry. In the present research, several environmental impacts related to the construction of asphalt paved highways in Ethiopia have been determined using the Life Cycle Assessment Approach for common pavement materials and construction activities. A deep focus has been given towards the extraction and processing of sand and gravel for preparation of base and sub-base; transportation of these input raw materials; consumption of fuels by various road construction machinery; direct or indirect emissions of carbon dioxide and other pollutants to atmosphere etc. Various suitable methods have been used to calculate the impacts of raw materials, fuel and machinery on various categories such as global warming potential, ozone depletion potential, terrestrial acidification potential, freshwater eutrophication, freshwater ecotoxicity etc. From the investigation, it has been suggested to use recycled materials for substituting gravel as base or sub-base materials and biodiesel for substituting diesel in the transportation trucks and dumpers. These types of new recycled materials may greatly help in assisting the evaluation of sustainable pavement construction. The present case study may help for potential changes in asphalt pavement construction to improve environmental sustainability.

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