Effect of bio-oil on rheological and calorimetric properties of RTFOT aged bituminous compositions

Ābele, Agnese; Merijs‐Meri, Remo; Bērziņa, Rita; Zicāns, Jānis; Haritonovs, Viktors; Ivanova, Tatjana

doi:10.1007/s42947-020-0051-y

Cited by 18 publications

(10 citation statements)

References 18 publications

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“…As the same with bio-oil-modified bitumen [19], obviously aging also accrues in PRM-modified bitumen, which significantly affects the performance of bitumen. The aging process of PRM-modified bitumen becomes more complex due to the presence of reactive functional groups presented in the bitumen.…”

Section: Introductionmentioning

confidence: 92%

Study on the Aging Resistance of Polyurethane Precursor Modified Bitumen and its Mechanism

Zhang¹,

Li²,

Hu³

et al. 2021

Sustainability

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As an environmentally friendly alternative for the production of high-performance modified asphalt by chemical reactions, a liquid-state polyurethane-precursor-based reactive modifier (PRM) was developed and employed in the asphalt modification. In contrast to the traditional solid bitumen modifier, for example, rubber and thermoplastic elastomers, the PRM as a liquid modifier has more significant advantages in reducing energy consumption and improving asphalt performance, which has attracted widespread attention. However, the aging resistance and its mechanism are not clear. In view of this, the aging performance of two PRM-modified bitumen (PRM-70 and PRM-90), under the short-term thermo-oxidative aging, long-term thermo-oxidative aging, and ultraviolet (UV) aging conditions, was investigated through chemical and mechanical methods. The results show that the PRM-90 is more susceptible to the thermos-oxidative aging and UV aging. The use of low-penetration-grade bitumen and ensuring an adequate reaction are beneficial to enhance the aging resistance of PRM-modified bitumen. The impact of aging on high-temperature performance of PRM-modified bitumen is great, followed by the low-temperature performance and the anti-fatigue performance. The mechanic-relevant rheological aging index (RAI) and fracture energy index (FEI) are recommended to evaluate aging properties for PRM-modified bitumen. This study not only provides support for further research on the relationship between the aging properties and mechanical performance of PRM-modified bitumen, but also provides a reference for conducting mechanism analysis.

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Section: Introductionmentioning

confidence: 92%

Study on the Aging Resistance of Polyurethane Precursor Modified Bitumen and its Mechanism

Zhang¹,

Li²,

Hu³

et al. 2021

Sustainability

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“…To quantitatively analyze the effect of sulfur on the aging resistance of bitumen [36], CAI was used. A larger CAI implies a higher aging degree of bitumen.…”

Section: Aging Resistancementioning

confidence: 99%

Aging Characteristics of Rubber Modified Bitumen Mixed with Sulfur after Terminal Blend Process

et al. 2022

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The influence of sulfur on the chemical, rheological, and aging resistance of terminal blend rubberized bitumen (TBRB) was studied. TB hybrid bitumen (TBHB) was prepared from with different sulfur contents (0.1, 0.2, 0.3, 0.4 wt%) and TBRB prepared with neat bitumen and crumb rubbers at 20% content. TBHB binders were aged by rolling thin film oven test (RTFOT) and pressure aging vessel (PAV), respectively. The chemical composition of TBHB binders was monitored by attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR). Rheological properties of all TBHB samples were tested. Chemical composition results show that TBHB can inhibit the degradation of polybutadiene compared with TBRB in the RTFOT stage, and the polybutadiene degradation is the main process of TBHB in the RTFOT stage, while the TBHB is mainly desulfurized after PAV aging. Meanwhile, the increase in sulfur content in the TBHB can improve the desulfurization degree of the TBHB binder after PAV. TBRB containing sulfur can improve the mechanical properties and elasticity and reduce the hardening degree during aging. Moreover, blending sulfur into the TBRB caused a lower complex modulus aging index after aging, which indicates that TBHB has superior aging resistance.

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“…Ābele et al focused on the effect of modification and RTFOT aging on the rheological properties. The result showed that the rapeseed oil biodiesel-modified RTFOT asphalt binder demonstrated improved rutting and fatigue resistance [ 35 ]. As a review of the literature suggests, limited works have paid attention to the quantitative analysis on the microstructure, and the effects of material composition and resultant microstructure on the rheological properties are also lacking.…”

Section: Introductionmentioning

confidence: 99%

Correlation Analysis of Linear Viscoelastic (LVE) Properties, Damage Resistance and Microstructure of Unmodified Asphalt Binders with the Same Penetration Grade

Wang

Song

Wang³

et al. 2022

Materials

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The penetration grade system is still widely adopted for selecting asphalt binder with desired paving performance. However, the initial material compositions of asphalt binder with the same penetration level are still different, and vary with the crude oil source and essentially result in different rheological performance. This study aimed to assess the linear viscoelastic (LVE) properties, and high- and intermediate-temperature and microscale characteristics of seven unmodified asphalt binders from different sources and countries with the same penetration level of 70. The LVE parameters were firstly evaluated followed by comparisons to various damage-based indexes. The microstructure of asphalt binders was further investigated followed by correlations between morphology and performance parameters. Experimental results indicate the |G*|/sin δ is well related to the MSCR-based non-recoverable creep compliance; furthermore, the R and |G*|·sin δ can generally represent the LAS-based failure strain and fatigue life, respectively. The viscoelastic nature of tested binders was clearly distinguished and related to rheological performance by atomic force microscopy (AFM). The roughness parameters and the phases’ content derived from AFM images showed significant correlations with LVE characteristics and fatigue resistance nature, respectively. This research provides theoretical foundations for further investigating the rheological performance and microstructure characteristics, and their correlations with asphalt binders.

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Effect of bio-oil on rheological and calorimetric properties of RTFOT aged bituminous compositions

Cited by 18 publications

References 18 publications

Study on the Aging Resistance of Polyurethane Precursor Modified Bitumen and its Mechanism

Study on the Aging Resistance of Polyurethane Precursor Modified Bitumen and its Mechanism

Aging Characteristics of Rubber Modified Bitumen Mixed with Sulfur after Terminal Blend Process

Correlation Analysis of Linear Viscoelastic (LVE) Properties, Damage Resistance and Microstructure of Unmodified Asphalt Binders with the Same Penetration Grade

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