Addition of Encapsulated Soybean Oil and Waste Cooking Oil in Asphalt Mixtures: Effects on Mechanical Properties and Self-Healing of Fatigue Damage

2022 ◽  
Vol 34 (4) ◽  
Author(s):  
Ablenya Grangeiro de Barros ◽  
Lêda Christiane de Figueirêdo Lopes Lucena ◽  
Álvaro García Hernandez
Keyword(s):  
Mechanical Properties ◽  
Soybean Oil ◽  
Fatigue Damage ◽  
Waste Cooking Oil ◽  
Asphalt Mixtures ◽  
Self Healing ◽  
Cooking Oil

Improving Waste Cooking Oil Quality for Biodiesel Production with the Ethanolic By‐product of Soybean Oil Extraction

2019 ◽  
Vol 96 (12) ◽  
pp. 1379-1388
Author(s):  
Larissa Braga Bueno‐Borges ◽  
Grasiela Cristina Pereira dos Santos ◽  
Severino Matias Alencar ◽  
Marisa Aparecida Bismara Regitano‐d'Arce
Keyword(s):  
Soybean Oil ◽  
Oil Quality ◽  
Waste Cooking Oil ◽  
Oil Extraction ◽  
Biodiesel Production ◽  
Cooking Oil

scholarly journals Optimization of Base Catalyzed Ethanolysis of Vegetable Oils in Microreactors Using Design of Experiments

2020 ◽  
Vol 10 (5) ◽  
pp. 1624
Author(s):  
Ekaterina Borovinskaya ◽  
Eva Ritter ◽  
Wladimir Reschetilowski
Keyword(s):  
Design Of Experiments ◽  
Soybean Oil ◽  
Vegetable Oils ◽  
Flow Rate ◽  
Positive Impact ◽  
Batch Reactor ◽  
Waste Cooking Oil ◽  
Reaction Systems ◽  
Cooking Oil ◽  
Continuous Reaction

The base-catalyzed ethanolysis of soybean oil and waste cooking oil (WCO) was investigated in two types of continuous reactors (microreactor and T-mixer) and in a batch reactor. Flow rate, ethanol/oil ratio and concentration of catalyst were varied according to the design of experiments in continuous reaction systems. Regression analysis was carried out concerning the obtained product yields. Based on this analysis optimal conditions in different reactors types with soybean oil, fresh and WCO were determined. While the increased flow rate was unfavorable in the MX-mixer, it contributed to a great positive impact in the T-mixer system at flow rates higher than 2.2 mL/min. The soybean oil provides a slightly lower yield maximum (96.7%) than the fresh cooking oil (97.9%) and the waste cooking oil (97.5%). Therefore, the mix of vegetable oils in the cooking oil is more suitable for ethanolysis reaction than the soybean oil.

Low temperature self-healing character of asphalt mixtures under different fatigue damage degrees

2019 ◽  
Vol 223 ◽  
pp. 870-882 ◽  
Author(s):  
Guoqiang Sun ◽  
Daquan Sun ◽  
Alvaro Guarin ◽  
Jianmin Ma ◽  
Feng Chen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Fatigue Damage ◽  
Asphalt Mixtures ◽  
Self Healing

scholarly journals Self-Healing Analysis of Half-Warm Asphalt Mixes Containing Electric Arc Furnace (EAF) Slag and Reclaimed Asphalt Pavement (RAP) Using a Novel Thermomechanical Healing Treatment

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2502 ◽  
Author(s):  
José Manuel Lizárraga ◽  
Juan Gallego
Keyword(s):  
Mechanical Properties ◽  
Microwave Heating ◽  
Asphalt Pavement ◽  
Electric Arc ◽  
Asphalt Mixtures ◽  
Self Healing ◽  
Arc Furnace ◽  
Recycled Asphalt ◽  
Indirect Tensile ◽  
Eaf Slag

Nowadays, the self-healing of asphalt pavements promoted by microwave radiation heating energy is gaining attention and strength in the scientific community. However, most of these studies are only conceptual and, thus, remain shrouded in uncertainty regarding technology development, economy, and application effect. Therefore, there are several efforts underway to offer more effective assisted healing treatments that are capable of overcoming such uncertainties. This paper aims to assess and quantify the healing performance rates (HR) of half-warm recycled asphalt (HWRA) mixtures containing electric arc furnace (EAF) slag and total recycled asphalt pavement (RAP) rates. To this end, a novel assisted thermomechanical healing treatment (i.e., a recompaction-based technique and microwave heating energy) was put forward to promote the potential healing effect of this treatment on the mechanical properties of the asphalt mixtures. In order to do this, three microwave heating temperatures (25 °C, 60 °C, and 80 °C) and three mechanical recompaction levels (0, 25, and 50 gyrations) were selected. After that, the healing performance rates (%, HR) of the asphalt mixtures were calculated by repeated indirect tensile strength (ITS) and indirect tensile stiffness modulus (ITSM). The results indicated that the 8% EAF slag mixture was found to provide significant microwave heating energy savings by up to 69% compared with the benchmark 100% RAP mixture, and, at the same time, it experienced a remarkable stiffness recovery response of 140% of the initial mechanical properties. These findings encourage greater confidence in promoting this innovative thermomechanical-based healing treatment for in-situ surface course asphalt mixtures of road pavements.

Mechanical behaviors of asphalt mixtures modified with European rock bitumen and waste cooking oil

2022 ◽  
Vol 319 ◽  
pp. 125909
Author(s):  
Kezhen Yan ◽  
Yiran Li ◽  
Zhengwu Long ◽  
Lingyun You ◽  
Min Wang ◽  
...  
Keyword(s):  
Waste Cooking Oil ◽  
Asphalt Mixtures ◽  
Mechanical Behaviors ◽  
Cooking Oil

Laboratory Testing of Self-Healing Fibers in Asphalt Mixtures Prepared with Recycled Materials

2019 ◽  
Vol 2673 (4) ◽  
pp. 513-523 ◽  
Author(s):  
Max A. Aguirre ◽  
Marwa M. Hassan ◽  
Sharareh Shirzad ◽  
Samuel Cooper ◽  
Louay N. Mohammad ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Sodium Alginate ◽  
Asphalt Mixtures ◽  
Hollow Fibers ◽  
Bending Test ◽  
Self Healing ◽  
Test Results ◽  
Strength Recovery ◽  
Recycling Agent ◽  
Alginate Fibers

Self-healing products such as hollow fibers filled with a recycling agent present an emerging technology that would enhance an asphalt mixture’s resistance to cracking damage in the long term. The objective of this study was to evaluate the healing efficiency of sodium-alginate fibers containing a recycling agent using asphalt concrete beam specimens. A self-healing experiment was designed and conducted to monitor strength recovery in the damaged specimens using a 3-point bending test during a 6-day healing period under two different environmental curing conditions. In addition, the effects of adding the hollow fibers on the mechanical properties of asphalt mixtures were evaluated by conducting a series of laboratory tests to evaluate the performance against common distress such as permanent deformation, intermediate cracking, and low-temperature cracking. Results of the self-healing experiment test results showed that the addition of sodium-alginate fibers improved the strength recovery of mixtures prepared with unmodified binder. The increase in temperature from 25°C to 50°C during the healing period also resulted in higher strength recovery percentages in all the evaluated mixtures. Furthermore, semi-circular bending test results showed that the addition of fibers enhanced the mechanical properties against fracture at intermediate temperature of mixtures containing recycled asphalt materials.

Sign in / Sign up

Export Citation Format

Share Document