Effect of Thermal Cycling on the Creep-Recovery Behaviour of Road Bitumen

Merbouh, M.

doi:10.1016/j.egypro.2012.05.125

Cited by 11 publications

(5 citation statements)

References 4 publications

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“…Stiffness decrease (deformability increase) and recoverability of creep strain decrease for neat bitumen and bitumen modified with ethylene vinyl acetate has been reported in the works [8] and [9] respectively. Essential decrease of dynamic modulus for an asphalt concrete after CFT occurring within one winter season in conditions of southern Ontario (Canada) has been reported in the article [10].…”

Section: Introductionmentioning

confidence: 82%

Effect of Freeze-Thaw Cycles on Mechanical Characteristics of Bitumens and Stone Mastic Asphalts

Teltayev¹,

Rossi

Izmailova³

et al. 2019

Applied Sciences

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The present article investigates in laboratory conditions the effect of cyclic freezing and thawing (CFT) on characteristics of the neat bitumen and bitumens modified with different polymers, as well as stone mastic asphalt concretes prepared with the use of the neat and the modified bitumens. Maximal and minimal temperature in cycles of freezing and thawing (FT) is accepted equal to +20 • C and −18 ± 2 • C respectively. Characteristics of low temperature resistance of bitumens (stiffness S and m-value) have been determined on bending beam rheometer at the temperatures of −24 • C, −30 • C, and −36 • C. Strength at direct tension of the stone mastic asphalt concretes has been evaluated in the device TRAVIS (Infratest Ltd., Brackenheim, Germany) at the temperatures of 0 • C, −10 • C, −20 • C, and −30 • C. Resistance of stone mastic asphalt concretes to rutting has been determined on a Hamburg wheel tracking machine. The characteristics of the bitumens have been determined in the initial condition and after 25 and 50 cycles of FT, and the characteristics of stone mastic asphalt concretes, in the initial condition and after 50 cycles of FT. The results obtained experimentally have shown that CFT impacts essentially on the investigated characteristics of bitumens and stone mastic asphalt concretes. Modification with polymers improves the mechanical characteristics of the bitumens and decreases the effect of CFT. It is also found out that when selecting a bitumen for specific climatic conditions it is necessary to take into account both the number of cycles of FT and the characteristic low temperature.

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Section: Introductionmentioning

confidence: 82%

Effect of Freeze-Thaw Cycles on Mechanical Characteristics of Bitumens and Stone Mastic Asphalts

Teltayev¹,

Rossi

Izmailova³

et al. 2019

Applied Sciences

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“…These water turns into ice in freezing cycles, causing the ice volume expansion. Mixture internal generates expansion force and results in micro-damage to mixture [12,15,16] . During the thaw cycles, with the filled ice melting, water will permeate through air voids and internal pores; the bonding between asphalt membrane and aggregates reduces as the water erodes [12,15,16] .…”

Section: Impact Of Freeze-thaw Cyclesmentioning

confidence: 99%

“…Asphalt pavement suffers from the impact of F-T in cold regions worldwide, and how to precisely evaluate the influence of F-T cycles on the compressive characteristics becomes one of the daunting tasks [12,15,16] . To solve this problem, F-T cycles test was applied in this research, and the influence of asphalt aggregate ratio was also analyzed.…”

Section: Introductionmentioning

confidence: 99%

Impact of freeze-thaw cycles on compressive characteristics of asphalt mixture in cold regions

et al. 2015

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Low average temperature, large temperature difference and continual freeze-thaw (F-T) cycles have significant impacts on mechanical property of asphalt pavement. F-T cycles test was applied to illustrate the mixtures' compressive characteristics. Exponential model was applied to analyze the variation of compressive characteristics with F-T cycles; Loss ratio model and Logistic model were used to present the deterioration trend with the increase of F-T cycles. ANOVA was applied to show the significant impact of F-T cycles and asphaltaggregate ratio. The experiment results show that the compressive strength and resilient modulus decline with increasing F-T cycles; the degradation is sharp during the initial F-T cycles, after 8 F-T cycles it turns to gentle. ANOVA results show that F-T cycles, and asphalt-aggregate ratio have significant influence on the compressive characteristics. Exponential model, Loss ratio model and Logistic model are significantly fitting the test data from statistics view. These models well reflect the compressive characteristics of asphalt mixture degradation trend with increasing F-T cycles.

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“…The penetration and softening point tests results, after each thermal treatment and at every ageing stage, are presented in Table 2. The residual penetration and the increment of softening point were calculated after the RTFOT using Equations ( 7) and (8), respectively [18]:…”

Section: Physical Properties Evaluationmentioning

confidence: 99%

“…The first one decreased bitumen susceptibility and caused the hardening of the material, which reduces rutting but increases the risk of thermal cracking at low temperatures. The second one increased both bitumen susceptibility and the risk of rutting at high temperatures [18]. Glaoui et al studied the impact of thermal fatigue cycles on the rheological behavior of polymer-modified bitumen.…”

Section: Introductionmentioning

confidence: 99%

Methodology for Efficient Bitumen Storage with Reduced Energy Consumption

et al. 2021

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This paper studies the possibility of minimizing energy consumption during 35/50 bitumen storage. Similarly to most bitumen companies, the company with which we collaborated uses fossil fuel to maintain bitumen tanks at 150 °C. The main objective is to optimize energy usage. To achieve this purpose, we tested two new storage processes. One is based on dynamic temperature storage between 140 and 160 °C, and the other on room temperature conditions. This work evaluates the effect of these storage conditions on the quality of 35/50 bitumen, and studies the energy aspect to calculate the energy profit for every storage method. After storage, we have studied short-term and long-term ageing using the Rolling Thin Film Oven (RTFOT) and the Pressure Ageing Vessel (PAV) tests, respectively. We characterized the samples using needle penetration at 25 °C, the softening point, and Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy. We observed that the change in physical properties is negligible after the tested storage processes. Chemically, both the storage conditions affected the oxidative behavior acceptably; the carbonyl index was the same in the long term. We conclude that we can store 35/50 bitumen at room temperature conditions, which follow us to save more than three times the energy needs compared to the standard configurations.

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Effect of Thermal Cycling on the Creep-Recovery Behaviour of Road Bitumen

Cited by 11 publications

References 4 publications

Effect of Freeze-Thaw Cycles on Mechanical Characteristics of Bitumens and Stone Mastic Asphalts

Effect of Freeze-Thaw Cycles on Mechanical Characteristics of Bitumens and Stone Mastic Asphalts

Impact of freeze-thaw cycles on compressive characteristics of asphalt mixture in cold regions

Methodology for Efficient Bitumen Storage with Reduced Energy Consumption

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