An overview of studies on the hazards, component analysis and suppression of fumes in asphalt and asphalt mixtures

Wang, Meng; Ping, Li; Nian, Tengfei; Mao, Yu

doi:10.1016/j.conbuildmat.2021.123185

Cited by 36 publications

(13 citation statements)

References 98 publications

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“…When the traditional asphalt pavement construction process is used, the asphalt smoke hazard is mainly concentrated at the paving site, as shown in Figure 18, because the majority of asphalt mixing plants have adopted effective emission control measures. Therefore, ecological environments and workers around construction sites are the most directly affected [113,114]. [113,114].…”

Section: Cement-based Pcfpmentioning

confidence: 99%

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Precast Assembled Road Paving Technology: Progress and Prospects

Tan,

Zhu,

Yang

et al. 2024

Materials

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This article presents a systematic review of the most cutting-edge research on precast pavement technology for the first time. Firstly, precast pavement is divided into two categories, precast cement concrete pavement and precast carpeted flexible pavement, according to the application of precast technology in pavement engineering. Subsequently, the structural characteristics, advantages, and disadvantages of various precast pavement systems are compared and analyzed; technical problems in precast pavement systems are explained; and future development directions are identified. In addition, the text specifically mentions the great contribution of precast carpeted flexible pavement technology in reducing the harmful effects of asphalt fumes on humans and the environment. This work will promote the application of prefabrication in road engineering and provide suggestions and references for subsequent research.

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Section: Cement-based Pcfpmentioning

confidence: 99%

“…Therefore, ecological environments and workers around construction sites are the most directly affected [113,114]. [113,114].…”

Section: Cement-based Pcfpmentioning

confidence: 99%

Precast Assembled Road Paving Technology: Progress and Prospects

Tan,

Zhu,

Yang

et al. 2024

Materials

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“…Specifically, asphalt construction has a huge carbon footprint at an average of 65.781 kg of CO 2 per lane-km of road [2], which comparts itself from harvesting raw material, production, and the construction process. In addition to the massive CO 2 footprint, the paving process with the most common asphalt material mixtures is prone to release toxic fumes and aerosols at higher temperatures [3].…”

Section: Introductionmentioning

confidence: 99%

Learning from data to improve asphalt road construction processes

Wörner,

Stöckert

2024

MATEC Web Conf.

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Asphalt road construction projects pose a lot of challenges in different disciplines, from the choice of construction methods, type and quantity of machines and personnel, pre-planning of all processes, ordering material from asphalt mixing plants, real-time logistics of handling material transport, and the asphalt paving and compaction process itself. Depending on the complexity and size of the construction site, preparation and execution can be influenced by a lot of unknown variables, like weather impact, material properties of the delivered asphalt or delays in the deliveries themselves. These circumstances might lead to irregularities in the asphalt material temperatures and thus suboptimal conditions for compaction or even construction stoppage - in any case, they lead to a reduction in quality of the built asphalt road. In recent years, a lot of mobile devices, sensors and software have been emerging as viable solutions in the construction industry to digitize and support these processes. Those real-time applications allow deeper insight into logistics or material properties on site and acquire data for downstream analysis. These endeavours in process optimization now benefit construction companies to increase efficiency, and for work safety and environmental aspects, it is crucial to optimize energy and CO2 consumption. Improved logistics and building roads with low-temperature asphalt will have to become a standard in road construction. The present study gives an overview of the digitalized processes in asphalt road construction with market-available solutions focusing on logistics data of the material delivery chain from mixing plant to paver, thermal imaging data of the built asphalt to validate asphalt temperatures, as well as machine and location data from asphalt paver and compaction rollers.

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“…Currently, fume detection methods primarily consist of indoor and on-site detection techniques, including gravimetric, UV-Vis, and sampling detection techniques [10,11]. The gravimetric method only permits the measurement of asphalt fume mixture concentration, whereas the UV visible method allows for the determination of both the concentration of asphalt fume mixtures and the content of individual polycyclic aromatic hydrocarbons [1,11,12]. Sampling detection technology enables the measurement of the composition and concentration of polycyclic aromatic hydrocarbons (PAHs) in asphalt smoke.…”

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

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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.

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An overview of studies on the hazards, component analysis and suppression of fumes in asphalt and asphalt mixtures

Cited by 36 publications

References 98 publications

Precast Assembled Road Paving Technology: Progress and Prospects

Precast Assembled Road Paving Technology: Progress and Prospects

Learning from data to improve asphalt road construction processes

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

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