How has the development of bio-based antioxidant agent for asphalt binder?
Best insight from top research papers
The development of bio-based antioxidant agents for asphalt binder has shown promising results in inhibiting asphalt aging and improving durability. Phenolic compounds, such as catechins, derived from bio-oils and crumb rubber have been found to resist asphalt aging. Catechins block asphalt aging at a chemical level by providing active H atoms to react with O2 and free radicals, preventing oxidation of asphalt molecules . Crumb rubber, on the other hand, exerts its anti-aging properties through physical aspects, limiting the movement of asphalt molecules and counteracting aging-induced asphalt hardening . Bio-oils derived from wood-based sources, rich in phenolic compounds, have also been effective in hindering oxidative aging in asphalt binder . The efficacy of bio-oils is influenced by the content and molecular structures of their phenolic compounds, with electron-donor substituents promoting antioxidant activity . These bio-based antioxidant agents offer a sustainable solution for improving the durability of asphalt binder and promoting environmental sustainability in the pavement industry .
Answers from top 5 papers
More filters
| Papers (5) | Insight |
|---|---|
12 Citations | The provided paper does not mention the development of a bio-based antioxidant agent for asphalt binder. |
7 Citations | The paper discusses the use of phenol-rich bio-oils as antioxidant agents to hinder oxidative aging in asphalt binder, improving its durability. |
| The paper does not discuss the development of a bio-based antioxidant agent for asphalt binder. | |
| The provided paper does not discuss the development of a bio-based antioxidant agent for asphalt binder. | |
| The paper investigates the inhibitory effects and mechanisms of natural phenolic compounds and crumb rubber on the aging deterioration of asphalt binders, but it does not specifically mention the development of bio-based antioxidant agents for asphalt binders. |
Related Questions
How does lignin work as antioxidant?5 answersLignin acts as an antioxidant through various mechanisms. Firstly, oxidative depolymerization of lignin followed by aldol condensation with methyl ethyl ketone enhances its antioxidation ability. Additionally, mild iodocyclohexane demethylation of lignin increases its phenolic hydroxyl content, leading to improved antioxidant activity. Moreover, modified lignin with high phenolic hydroxyl content exhibits enhanced antioxidant properties by scavenging free radicals. Furthermore, selective esterification of aliphatic OH groups in lignin compounds using lipase preserves their antioxidant capacity, making them comparable to commercial antioxidants. Lastly, lignin's chemical structure, with highly aromatic units and oxygenated moieties, allows it to act as a free radical scavenger, antioxidant, and UV-blocker, making it suitable for various applications.
How does flaxseed perform as bio bitumen in asphalt?5 answersFlaxseed, or linseed, has been studied as a potential bio-bitumen for asphalt. Research has shown that the addition of linseed oil, obtained from Linum usitatissimum, to asphalt binder can reduce the mixing temperature and improve the performance of warm mixtures. Flax fiber composites, on the other hand, have shown good mechanical properties but are prone to moisture absorption, which can affect their performance in outdoor applications. Bio-binders or bio-oils extracted from biomass resources, such as date seeds, have also been investigated as alternatives to petroleum asphalt binders. The addition of date seed oil to asphalt binder has been found to increase penetration and reduce softening point and viscosity, but it also decreases temperature susceptibility and high-temperature performance grade. Modified bio-asphalt, created by mixing bio-asphalt with modified asphalt, has shown improved properties such as reduced penetration, improved temperature stability, and increased stiffness and brittleness at low temperatures. Overall, flaxseed and its byproducts have shown potential as bio-bitumen in asphalt, with various benefits and considerations depending on the specific application.
What is the bio-based polymer composite?4 answersBio-based polymer composites are materials made from renewable resources such as agricultural waste biomass. These composites are considered as sustainable and responsible alternatives to conventional materials due to their low cost, renewable nature, and biodegradability. They can be used in various industries including packaging, construction, vehicle parts, biofuels, soil amendments, and medical applications. Biopolymer-based composites possess physical, chemical, and material characteristics that make them suitable for a wide range of applications. They can be functionalized during their preparation, allowing for better compatibility and efficient models for preparing composites. Biocomposites, which are a type of bio-based polymer composite, are commonly used in packaging, automotive, and construction applications. Compared to synthetic fiber-based composites, biocomposites offer a cost-effective and sustainable alternative with low to moderate strength requirements. The use of bio-based polymers and natural fibers in composites is motivated by concerns about the environment, the depletion of petroleum supplies, and the desire for sustainable materials. These materials have high performance, biodegradability, nonabrasive light weight, and low cost, making them attractive for various applications.
What is a bio based material?5 answersBio-based materials are materials derived from living matter or synthesized chemically from biomass. These materials have gained attention due to their abundance, sustainability, low cost, and environmentally friendly properties. They can be classified into degradable and non-degradable categories based on their ability to break down over time. Bio-based materials have a wide range of applications, including in the fields of antibacterial industry, electrochemistry, bioelectronics, and bioplastics. They can be used as drug carriers, antimicrobials, conducting electrolytes, binders in electrodes, detectors, sensors, active materials in fuel cells, actuators, and triboelectric nanogenerators. Biopolymers, such as carboxymethyl cellulose (CMC), are commonly used in bio-based materials due to their flexibility, biocompatibility, and biodegradability. These materials offer advantages such as easy fabrication, non-toxicity, and compatibility with biological systems. Overall, bio-based materials provide a sustainable alternative to fossil-based materials and have promising potential in various applications.
Does cannabigerol have antioxidant activity?5 answersCannabigerol (CBG) has been shown to have antioxidant activity in multiple studies. CBG exhibits antioxidant and anti-inflammatory properties, making it a promising compound for use in pharmacotherapy. In an experimental model mimicking oxidative stress and neurotoxicity, CBG exerted antioxidant effects in astrocytes. Additionally, CBG prevented biofilm formation of Streptococcus mutans, a common cariogenic bacterium, by reducing biofilm biomass, decreasing biofilm thickness, and increasing reactive oxygen species levels. These findings suggest that CBG has the potential to be used as a natural antioxidant in the treatment of diseases involving oxidative stress and as a preventive treatment for dental caries.
Which oil is antioxidant?7 answers