Preparation method and performance test of Evotherm pre-wet treatment aluminum hydroxide type warm-mixed flame-retardant asphalt

Wan, Zhenmin; Zheng, Binguo; Xie, Xiangbing; Yang, Jingjing; Zhou, Hui; Wan, Robin Shilong; Wang, Jiakang; Wang, Jingjing; Luo, Wenfeng; Xue, Ru; Li, Guanghui; He, Tingshu

doi:10.1016/j.conbuildmat.2020.120618

Cited by 21 publications

(5 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The viscosity reduction effects of Evotherm and GLWBR on HVMA were not obvious because they were surface-active WMAs, greatly influencing the contact relationship between asphalt and aggregate and improving the adhesion ability of asphalt to aggregate. However, they had little effect on asphalt viscosity (Wan 2020).…”

Section: Rotational Viscosity and Absolute Viscosity In 60°c Analysismentioning

confidence: 92%

Rheological Properties of High-Viscosity Modified Asphalt Containing Warm-Mix Additives

Chen

Dong

et al. 2023

J. Mater. Civ. Eng.

View full text Add to dashboard Cite

High-viscosity modified asphalt (HVMA) is the most commonly applied method in drainage asphalt pavements. However, some disadvantages of hot-mix HVMA, including high energy consumption and unavoidable environmental pollution, should be improved. Therefore, warm-mix additive (WMA) was introduced. In this paper, the effects of WMA on the rheological and microstructural properties of HVMA were studied to select optimum WMA conditions. WMAs mainly include foam warm mix (1%, 3%, and 5%), Sasobit (1%, 3%, and 5%), Evotherm (0.4%, 0.8%, and 1.2%), and the newly introduced warm additive glow brand (GLWBR) (0.4%, 0.8%, and 1.2%). Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests were performed on HVMA after rheological processes. Also, microstructural properties were examined by Fourier transform infrared spectroscopy and scanning electron microscopy methods. Based on the obtained results, all WMAs reduced the viscosity (135°C) of HVMA and achieved warm mixing effects. However, absolute viscosity (60°C) was enhanced by Sasobit and GLWBR. In addition, GLWBR improved high-temperature rheological performance and had no significant effect on the low-temperature and aging performance of HVMA. These findings were further verified by morphological observations.

show abstract

Section: Rotational Viscosity and Absolute Viscosity In 60°c Analysismentioning

confidence: 92%

Rheological Properties of High-Viscosity Modified Asphalt Containing Warm-Mix Additives

Chen

Dong

et al. 2023

J. Mater. Civ. Eng.

View full text Add to dashboard Cite

show abstract

“…Wan et al [29] used this test method to explore the fame retardant performance of the fame retardant asphalt heat loss point and heat loss pole. Tis part also judges the hightemperature stability of bio-asphalt and composite-modifed asphalt by them.…”

Section: Termogravimetric Analysis (Tg-dsg)mentioning

confidence: 99%

Preparation and Properties of Nano-ZnO Combined with Biomass Heavy Oil Composite-Modified Asphalt

Liu

Xie

et al. 2022

Advances in Materials Science and Engineering

Self Cite

View full text Add to dashboard Cite

Biomass heavy oil is employed to partially substitute the petroleum-based asphalt due to its renewability, environmentally friendly, and cost-effective advantages. However, its usage weakens the high-temperature performance of petroleum asphalt. Therefore, nano-ZnO was employed as a modifier to make composite-modified asphalt to improve the high-temperature performance in this paper. It was prepared in two steps: first, bio-asphalt was prepared by adding biomass heavy oil based on a certain content of matrix asphalt and then adding nano-ZnO with the particle size of 20 nm. The modification methods of bio-asphalt and composite-modified asphalt were analyzed by Fourier infrared (FTIR) and X-ray diffraction (XRD) experiments. Three major indexes test, dynamic shear rheological test, Brookfield rotational viscosity test (RV), and thermogravimetric analysis (TG-DSC) are used to analyze the high-temperature performance of bio-asphalt and composite-modified asphalt. The results show that biomass heavy oil and nano-ZnO are used to physically and chemically modify asphalt and the modification effect of bio-asphalt is the best when the biomass heavy oil content is about 9%. The high-temperature performance of composite heavy oil-modified asphalt is improved significantly. The performance indexes of Bio-6% and 1% nano-ZnO composite-modified asphalt are better than bio-asphalt. However, the high-temperature performance of Bio-12% and 3% nano-ZnO composite-modified asphalt is the best.

show abstract

“…Nowadays, people often reduce the viscosity of HVMA by adding warm mixing agents, thereby indirectly reducing the energy consumption of HVMA [20]. Various warm mix additives such as organic waxes, surfactants, and foaming techniques have been utilized [21][22][23][24]. In terms of organic waxes, Jamshidi et al, conducted a review on the rheological properties and performance of asphalt-containing Sasobit, along with its potential for energy-saving and reduction in greenhouse gas emissions.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, Wan et al, investigated the modification of asphalt using a surfactant called Evotherm, along with aluminum hydroxide (ATH). Their findings indicated that the modified asphalt exhibited improved thermal stability [22]. Additionally, researchers such as Valdes-Vidal et al, had utilized natural zeolite in the preparation of WMA.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Fume Suppression, Viscosity-Retarding, and Rheological Properties of Eco-Friendly High-Viscosity Modified Asphalt

Ning,

Sun,

Qiu

et al. 2023

Coatings

View full text Add to dashboard Cite

In order to address the issues of high viscosity and excessive fume exhaust associated with high-viscosity modified asphalt (HVMA), the objective of this study was to develop an eco-friendly HVMA by incorporating fume suppressants and viscosity-retarding agents (VRAs). To begin with, desulfurization rubber powder (DRP) was utilized as a modifier, and fume suppressants, including activated carbon, a chemical reaction fume suppressant, and a composite fume suppressant combining activated carbon and chemical reaction fume suppressant were added to the HVMA separately. The fume suppression effect and odor level were observed to determine the optimal fume suppressant composition for this study. Based on these observations, an area integration method was proposed, utilizing rotational viscosity testing and temperature sweeping experiments, evaluating the viscosity-retarding effect and mixing temperature when different amounts of Sasobit VRA, Evotherm3G VRA, and a composite VRA of Sasobit and Evotherm3G were added to the HVMA. This approach aimed to identify the eco-friendly HVMA with the most effective fume suppression and viscosity-retarding abilities. Furthermore, the morphology and rheological properties of the eco-friendly HVMA were examined through fluorescence microscopy, zero shear viscosity test, multiple stress creep recovery analysis, liner amplitude sweep test, and frequency sweep test. The results demonstrated that the HVMA formulation consisting of 15% DRP and 1% composite fume suppressant exhibited a satisfactory fume suppression effect and odor level. Based on this, the HVMA formulation containing 0.6% Evotherm3G and 3% Sasobit VRAs displayed the best viscosity-retarding effect while reducing the mixing temperature. Moreover, when compared to common HVMA, the eco-friendly HVMA exhibited excellent high-temperature resistance, successfully accomplishing the dual objectives of ecological friendliness and superior performance.

show abstract

Preparation method and performance test of Evotherm pre-wet treatment aluminum hydroxide type warm-mixed flame-retardant asphalt

Cited by 21 publications

References 23 publications

Rheological Properties of High-Viscosity Modified Asphalt Containing Warm-Mix Additives

Rheological Properties of High-Viscosity Modified Asphalt Containing Warm-Mix Additives

Preparation and Properties of Nano-ZnO Combined with Biomass Heavy Oil Composite-Modified Asphalt

Evaluation of Fume Suppression, Viscosity-Retarding, and Rheological Properties of Eco-Friendly High-Viscosity Modified Asphalt

Contact Info

Product

Resources

About