The Experimental Study on the Road Asphalt Fumes Suppressive Effect of SBS and Nano Calcium Carbonate

Peng, Xianghe; Qian, Shi Lin; Xiao, Fei Peng; Zhang, Peng; Li, Zhi Yang

doi:10.4028/www.scientific.net/amr.233-235.507

Cited by 10 publications

(3 citation statements)

References 3 publications

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“…SBS is a frequently used property modifier in asphalt materials, and SBS-modified asphalt has been widely used in pavement construction. Previous works , pointed out that SBS has an effect on reducing the VOC emission from asphalt materials. To demonstrate the ability of the direct analysis method to quickly evaluate the efficacy of VOC inhibitors, we analyzed the fume difference between SBS-modified asphalt and base asphalt.…”

Section: Results and Discussionmentioning

confidence: 99%

Rapid and Direct Assessment of Asphalt Volatile Organic Compound Emission Based on Carbon Fiber Ionization Mass Spectrometry

et al. 2023

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Due to the complicacy of asphalt fumes, the analytical methods for investigating volatile organic compounds (VOCs) are very limited. In this study, a direct and real-time analysis method based on carbon fiber ionization mass spectrometry (CFI-MS), an ambient mass spectrometric technique, was established and successfully applied in the analysis of asphalt VOCs. The asphalt VOCs can be directly detected in the open atmosphere without the collection step of asphalt fumes, and the mass spectra of one asphalt sample can be obtained in a few seconds in both positive and negative ion modes. By investigating the mass spectral changes of asphalt fumes at different heating temperatures ranging from 50 to 200 °C, the temperature factor of asphalt fume emission was demonstrated in this work. The research results demonstrate that the complexity of asphalt fumes is positively related to the applied temperature. Moreover, the VOCs of saturates, aromatics, resins, and asphaltenes fractions were also analyzed by the direct analysis method. The result shows that aromatics contribute most to the emission of VOCs. In addition, the obtained mass spectra combined with the principal component analysis method show the great potential to quickly screen VOC inhibitors of asphalt materials.

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Section: Results and Discussionmentioning

confidence: 99%

Rapid and Direct Assessment of Asphalt Volatile Organic Compound Emission Based on Carbon Fiber Ionization Mass Spectrometry

et al. 2023

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“…The law of generation of asphalt fume and its main influencing factors. The experimental steps referred to the requirements of "Stationary source emission -Gravimetric method of asphalt fume" (HJ/T45-1999) [2] released by the State Environmental Protection Administration and Peng Zhang [3] study. The test steps are as follows: first drying glass fiber filter cartridge and weighing its quality, then adding the asphalt and weighing both the total mass.…”

Section: Experimental Study On the Main Influencing Factors Of Asphal...mentioning

confidence: 99%

Study on Influencing Factors of Asphalt Fume Releasing and its Hazards

Wang

Zhang

2012

AMM

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A large number of experiments were done in order to find out the main factors which have an influence on the asphalt flue production in asphalt road construction and to master its dangers. The results show that the asphalt flue production varies with heating temperature, heating time, the asphalt thickness and stirring rate significantly. accordingly these are the main factors which influence the asphalt flue production. Further analysis by means of UV spectrophotometer and liquid chromatography shows that the asphalt flue contains serious harm to human body, such as aromatic compounds, alkanes, and sulfur heterocyclic compounds and other substances. therefore some steps should be taken to inhibit the production of asphalt flue for reducing the hazards to construction workers.

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“…There are many types of asphalt smoke suppressants, they can be roughly divided into the three categories (Peng et al, 2011;Yang et al, 2022), namely, adsorbents with physical or chemical reaction adsorption; flame retardants that can reduce surface temperature to achieve smoke inhibition; and polymer modifiers that can form a network structure in asphalt to prevent volatilization of asphalt fumes. Previous research results provide rich references for the development, smoke inhibition effect, smoke inhibition mechanism, and working performance of asphalt smoke suppressants.…”

Section: Introductionmentioning

confidence: 99%

Influence of smoke suppressant on the smoke inhibition effect and properties of different types of asphalt

Liang

Zhao²,

et al. 2023

Front. Mater.

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The current understanding of the influence of smoke suppressants on the smoke inhibition effect and working performance of different types of asphalt is limited. In this study, portable gas detector (PGD) tests were used to investigate the influence of the smoke suppressant on different types of asphalt and the smoke purification effect. Subsequently, gas chromatography-mass spectrometry (GC-MS) was used to analyze the influence of the smoke suppressant on the volatile organic compounds (VOCs) in different types of asphalt fume, so as to compare and verify the PGD tests results. Finally, scanning electron microscopy and energy dispersive spectrometry were used to observe and analyze the influence of the smoke suppressant on the microstructure and element composition of different types of asphalt. The results show that the smoke suppressant can purify various harmful gases volatilized from different types of asphalt, but the effect and the optimal dosage of smoke suppressant are slightly different. The purification rate of the smoke suppressant for SO2 or H2S in the fumes of various asphalts can reach >70% and the NO and VOC purification rates can reach >40%. The influence of the smoke suppressant on the VOC purification rate of different asphalts detected through the GC-MS and PGD tests is similar. The smoke suppressant has little effect on the asphalt surface microstructure and on the changes in the element content in asphalt, indicating that it has no effect on the main properties of the asphalt itself. This study is helpful to further understand the relationship between smoke suppressants and the smoke inhibition effect and the working performance of different types of asphalt. Additionally, it provides basis and guidance for the development of low-smoke asphalt with a better emission reduction effect, which has a certain guiding and application significance.

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The Experimental Study on the Road Asphalt Fumes Suppressive Effect of SBS and Nano Calcium Carbonate

Cited by 10 publications

References 3 publications

Rapid and Direct Assessment of Asphalt Volatile Organic Compound Emission Based on Carbon Fiber Ionization Mass Spectrometry

Rapid and Direct Assessment of Asphalt Volatile Organic Compound Emission Based on Carbon Fiber Ionization Mass Spectrometry

Study on Influencing Factors of Asphalt Fume Releasing and its Hazards

Influence of smoke suppressant on the smoke inhibition effect and properties of different types of asphalt

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