Investigation on Using SBS and Active Carbon Filler to Reduce the VOC Emission from Bituminous Materials
Abstract
:1. Introduction
2. Materials and Test Methods
2.1. Raw Materials
Items | Values |
---|---|
PH | 5.0–7.0 |
Surface area | 1100 m2/g |
Residual after dried | 90% |
Dissolved by hydrochloric acid | Less than 0.8% |
Dissolved by ethanol | Less than 0.2% |
Property | PJ90 | PJ90 (4% SBS + 4% C) |
---|---|---|
Softening point (°C) | 45 | 70 |
Ductility (15 °C) (cm) | >120 | >120 |
Penetration (25 °C) (0.1 mm) | 75.6 | 56.7 |
2.2. Principle of TG-MS Test
2.3. Ultraviolet-Visible Spectroscopy Test
2.4. Rheological Property Analysis
3. Results and Discussions
3.1. Residual Volatile Speed
Volatile Type | Molecular Type | Main Characteristics |
---|---|---|
Naphthalene | The most volatile components from bituminous materials, may cause cancer | |
Dichloroethane | The two main volatile components from bituminous materials, toxicity to humans and aquatic organisms | |
Normal octane | ||
Methylphenanthrene | Main components of VOC, toxicity to humans and aquatic organisms |
3.2. Ultraviolet-Visible Spectroscopy Test (UV-Vis) Test Analysis
3.2.1. Calibration Curve
No. | Absorbance (Y) | Concentration of VOC (μg/mL, X) |
---|---|---|
1 | 0 | 0 |
2 | 0.0686 | 9.4949 |
3 | 0.1573 | 28.4848 |
4 | 0.3897 | 47.4747 |
5 | 0.4813 | 66.4646 |
6 | 0.6254 | 75.9596 |
7 | 0.7192 | 94.9495 |
8 | 0.8242 | 123.4343 |
9 | 0.9594 | 142.4242 |
Mathematical Solver | Y = 0.005X + 0.0078 (Y = aX + b, R2 = 0.998) |
3.2.2. UV-Vis Data
Parameter | PJ-90 | PJ90 (4% SBS + 4% C) |
---|---|---|
M (g) | 935.48 | 1190.94 |
Y | 2.0569 | 1.2087 |
V (mL) | 18 | 18 |
Concentration of VOC in cyclohexane (μg/mL) | 409.82 | 240.18 |
Total amount of VOC (μg) | 7376.76 | 4323.24 |
W (μg/g) | 7.886 | 3.63 |
VOC decrement percentage (%) | 53.96 |
3.3. Rheological Behaviors
3.3.1. Temperature Sweep
3.3.2. Frequency Sweep
4. Conclusions
- TG-MS, a combination of thermogravimetry and mass spectrometry can be used to identify different VOC components from bituminous materials during a weight lost process.
- The combined introduction of SBS and active carbon filler into bituminous materials can significantly decrease the VOC emission speed, while the decreasing influence is different on different types of gas. Such an inhibitory effect resulting from SBS and active carbon filler is temperature related.
- Under the same temperature condition, the amount of VOC emission from PJ90 bituminous material was much higher than that from bituminous material modified with inhibitors. The combination of using SBS and active carbon filler as inhibitors can prevent more than 50% of VOC molecules from volatilization.
- The combined introduction of SBS and active carbon filler into bituminous materials can not only lower the VOC emission speed and amount, but also improve the deformation resistance behavior at a higher temperature, which was proven by means of a temperature sweep test and a frequency sweep test.
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Cui, P.; Wu, S.; Li, F.; Xiao, Y.; Zhang, H. Investigation on Using SBS and Active Carbon Filler to Reduce the VOC Emission from Bituminous Materials. Materials 2014, 7, 6130-6143. https://doi.org/10.3390/ma7096130
Cui P, Wu S, Li F, Xiao Y, Zhang H. Investigation on Using SBS and Active Carbon Filler to Reduce the VOC Emission from Bituminous Materials. Materials. 2014; 7(9):6130-6143. https://doi.org/10.3390/ma7096130
Chicago/Turabian StyleCui, Peiqiang, Shaopeng Wu, Fuzhou Li, Yue Xiao, and Honghua Zhang. 2014. "Investigation on Using SBS and Active Carbon Filler to Reduce the VOC Emission from Bituminous Materials" Materials 7, no. 9: 6130-6143. https://doi.org/10.3390/ma7096130