Homogeneity evaluation of hot in-place recycling asphalt mixture using digital image processing technique

Li, Xuelian; Lv, Xinchao; Zhou, Yuhao; You, Zhanping; Chen, Yuliang; Cui, Zhijing; Diab, Aboelkasim

doi:10.1016/j.jclepro.2020.120524

Cited by 44 publications

(12 citation statements)

References 21 publications

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“…It was established in work [4] that the hot regeneration of road paving is most effective when the service life does not exceed (8)(9)(10) years at an inter-repair period of (12)(13)(14) years. Over this period, road paving loses only about 40 % of quality; at the same time, over the next (2)(3)(4) years the residual resource decreases to 20 %.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The results of testing asphalt concrete samples after repeated warming, reported in papers [9,10], indicate that asphalt concrete does not change its characteristics at the temperatures not exceeding 180 °С and at the duration of warming to 30 minutes. When maintaining the temperature at the surface of an asphalt concrete coating of (160-180) °С, the depth of warming the asphalt concrete, before its transition to a plastic state, reaches (4-6) cm at the specific dimensions and motion speed of an asphalt preheater [9].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The authors of papers [8,10] determined the influence of the temperature and duration of stirring the mixture on its homogeneity. This research showed that increasing the uniformity of the mixture is achieved by increasing the heating temperature.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…However, still to be addressed are issues to justify the weight of factors that significantly affect the physical and mechanical characteristics of regenerated asphalt concrete and to determine the optimal technological regimes of its preparation. The solutions reported in works [3,7,8,10,12] are mostly based on establishing the influence of individual factors on the physical-mechanical properties of the regenerated asphalt concrete. This allows us to argue about the expediency of research into the influence of several weighty factors at the same time, which corresponds to the actual situation when applying hot recycling.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Substantiating the choice and optimizing the parameters for the technology of hot recycling of asphalt concrete road coating

Savenko

Honcharenko

Illiash

et al. 2020

EEJET

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Методом експертних оцінок обґрунтовано, що найбільш вагомими факторами, які суттєво впливають на механізм та кінетику технологічних процесів приготування регенерованої суміші, є температура приготування суміші та вміст регенеруючої добавки. Досліджено їх вплив на фізико-механічні показники регенерованого асфальтобетону, отриманого за технологією гарячого ресайклінгу асфальтобетонного покриття методом «in place». При проведенні експериментальних досліджень отримані залежності фізико-механічних показників (водонасичення, міцність на стиск при 0 °С та при 50 °С) регенерованого асфальтобетону від вмісту добавки та температури перемішування. Отримано математичні моделі у вигляді поліномів другого ступеню, що описують залежність водонасичення та міцності при стиску регенерованого асфальтобетону від температури приготування та вмісту регенеруючої добавки. Встановлено що із збільшенням температури перемішування збільшується міцність на стиск при 0 °С, в той же час міцність на стиск при 50 °С та показник водонасичення зменшуються. Із збільшенням регенеруючої добавки всі фізико-механічні показники, які були досліджені, зменшуються. На основі аналізу отриманих результатів встановлені області раціональних значень температури перемішування розпушеної асфальтобетонної крихти (125-135) °С, та вмісту добавки (0,26-0,28) % при приготуванні регенерованої гарячої асфальтобетонної суміші. Отримана суміш за фізико-технічними показниками задовольняє вимоги ДСТУ Б В.2.7-119:2011 «Суміші асфальтобетонні і асфальтобетон дорожній та аеродромний. Технічні умови» до гарячих дрібнозернистих асфальтобетонних сумішей. Отримані результати корисні при проектуванні технології гарячого ресайклінгу асфальтобетонного покриття методом «in place» та в дослідженнях, пов'язаних з її удосконалюванням Ключові слова: гарячий ресайклінг, асфальтобетон, експериментально-статистичне моделювання, температура перемішування, регенеруюча добавка

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Substantiating the choice and optimizing the parameters for the technology of hot recycling of asphalt concrete road coating

Savenko

Honcharenko

Illiash

et al. 2020

EEJET

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“…Asphalt recycling has increased dramatically in the past several years [ 1 , 2 ]. The rehabilitation of pavement also has lots of techniques, and one eco-friendly methodology is to use a CIR asphalt mixture [ 3 , 4 ]. CIR is a procedure whereby the overlayer of asphalt pavement is milled and mixed with stabilizers like emulsified asphalt [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Cold In-Place Recycling Asphalt Mixtures: Laboratory Performance and Preliminary M-E Design Analysis

You

Chen

et al. 2021

Materials

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Cold in-place recycling (CIR) asphalt mixtures are an attractive eco-friendly method for rehabilitating asphalt pavement. However, the on-site CIR asphalt mixture generally has a high air void because of the moisture content during construction, and the moisture susceptibility is vital for estimating the road service life. Therefore, the main purpose of this research is to characterize the effect of moisture on the high-temperature and low-temperature performance of a CIR asphalt mixture to predict CIR pavement distress based on a mechanistic–empirical (M-E) pavement design. Moisture conditioning was simulated by the moisture-induced stress tester (MIST). The moisture susceptibility performance of the CIR asphalt mixture (pre-mist and post-mist) was estimated by a dynamic modulus test and a disk-shaped compact tension (DCT) test. In addition, the standard solvent extraction test was used to obtain the reclaimed asphalt pavement (RAP) and CIR asphalt. Asphalt binder performance, including higher temperature and medium temperature performance, was evaluated by dynamic shear rheometer (DSR) equipment and low-temperature properties were estimated by the asphalt binder cracking device (ABCD). Then the predicted pavement distresses were estimated based on the pavement M-E design method. The experimental results revealed that (1) DCT and dynamic modulus tests are sensitive to moisture conditioning. The dynamic modulus decreased by 13% to 43% at various temperatures and frequencies, and the low-temperature cracking energy decreased by 20%. (2) RAP asphalt incorporated with asphalt emulsion decreased the high-temperature rutting resistance but improved the low-temperature anti-cracking and the fatigue life. The M-E design results showed that the RAP incorporated with asphalt emulsion reduced the international roughness index (IRI) and AC bottom-up fatigue predictions, while increasing the total rutting and AC rutting predictions. The moisture damage in the CIR pavement layer also did not significantly affect the predicted distress with low traffic volume. In summary, the implementation of CIR technology in the project improved low-temperature cracking and fatigue performance in the asphalt pavement. Meanwhile, the moisture damage of the CIR asphalt mixture accelerated high-temperature rutting and low-temperature cracking, but it may be acceptable when used for low-volume roads.

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Numerical Simulation-Based Investigation of Fatigue Fracture Mechanisms in Hot In-Place Recycling of Asphalt Pavement

Zhao,

Cao

2024

Lecture Notes in Civil Engineering

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Hot in-place recycling (HIR) technology rejuvenates a certain depth range (typically not exceeding 6 cm) of old asphalt concrete pavement in a single step. Suitable for early-stage surface pavement distresses, it prevents them from progressing into deeper layers. Despite numerous experimental studies on the fatigue and fracture properties of hot recycled materials, limited research exists on numerical simulation of fatigue fracture in such materials. Numerical simulations, offering cost-effectiveness and overcoming size constraints, are the focus of this paper. The study uses a developed fatigue fracture co-simulation program to investigate fatigue fracture behavior in pavement structures under wheel load and temperature effects. It explores the influence of material properties, layer configurations, and initial crack positions of HIR materials on fatigue cracking occurrence. The research provides valuable insights into fatigue fracture patterns in HIR material pavement structures, offering a theoretical foundation for preventing fatigue fracture in such materials.

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Homogeneity evaluation of hot in-place recycling asphalt mixture using digital image processing technique

Cited by 44 publications

References 21 publications

Substantiating the choice and optimizing the parameters for the technology of hot recycling of asphalt concrete road coating

Substantiating the choice and optimizing the parameters for the technology of hot recycling of asphalt concrete road coating

Cold In-Place Recycling Asphalt Mixtures: Laboratory Performance and Preliminary M-E Design Analysis

Numerical Simulation-Based Investigation of Fatigue Fracture Mechanisms in Hot In-Place Recycling of Asphalt Pavement

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