Effects of fibre additive on the high temperature property of asphalt binder

2006 ◽  
Vol 21 (1) ◽  
pp. 118-120 ◽  
Author(s):  
Wu Shaopeng ◽  
Chen Zheng ◽  
Ye Qunshan ◽  
Liao Weidong
Keyword(s):  
High Temperature ◽  
Asphalt Binder ◽  
Temperature Property ◽  
High Temperature Property

scholarly journals High-Temperature Property Evaluation and Index Research of Modified Asphalt before and After Aging

2022 ◽  
Vol 2152 (1) ◽  
pp. 012032
Author(s):  
Wen Wang ◽  
Zihao Wang ◽  
Liujie Guo
Keyword(s):  
High Temperature ◽  
Asphalt Binder ◽  
Evaluation Index ◽  
Temperature Property ◽  
Modified Asphalt ◽  
Property Evaluation ◽  
Before And After ◽  
High Temperature Property ◽  
Polymer Modified Asphalt ◽  
Sbs Modified Asphalt

Abstract In order to better evaluate the composite modified asphalt of composite modified asphalt, this study through dynamic shear rheological (DSR) test, the three kinds of polymer modified asphalt before and after ageing: the compound modified asphalt (CCR), rubber powder modified asphalt (CR) and composite modified asphalt of SBS modified asphalt (SBS) analysis, to explore suitable for composite modified asphalt of modified asphalt evaluation index. The results show that: Compared with G*/sinδ, G*/(sinδ)9 has higher accuracy for evaluating the composite modified asphalt of polymer modified asphalt and is more sensitive to changes in phase angle. The critical temperature of anti-rutting factor TG*/sinδ9 is significantly higher than that of TG*/sinδ, especially for composite modified asphalt. This has an important impact on the PG classification in the Superpave asphalt binder specification. G*/sinδ underestimates the high temperature grade of the modified asphalt. The equivalent viscosity measured with η’ = sinδ-4.8628 G*/ω has the best correlation with the anti-rutting factor G*/(sinδ)9, and the highest correlation coefficient is 0.999, which is more suitable as a high-temperature property evaluation index of modified asphalt.

Dynamic Viscoelastic Properties of SBS Modified Asphalt Based on DSR Testing

2012 ◽  
Vol 598 ◽  
pp. 473-476 ◽  
Author(s):  
Yong Mei Guo ◽  
Wei Chen
Keyword(s):  
Complex Modulus ◽  
Superposition Principle ◽  
Asphalt Binder ◽  
Asphalt Binders ◽  
Frequency Range ◽  
Master Curves ◽  
Temperature Property ◽  
Low Frequencies ◽  
High Temperature Property ◽  
Frequency Sweeps

Five SBS modified asphalts and one base asphalt were selected to carry out frequency sweeps over a wider frequency range using the dynamic shear rheometer (DSR). Six asphalt binders were subjected to sinusoidal loading at 30°C-90°C within the linear viscoelastic limits, and master curves of complex modulus (G*) and phase angle (δ) could be constructed by means of the time-temperature superposition principle (TTSP). The results show that the G* values of SBS modified asphalts are significantly greater than those of base asphalt at low frequencies, but are slightly smaller at high frequencies. Compared with the base asphalt, SBS modified asphalts have narrower master curves of complex modulus, and their phase angles are much smaller within the whole frequency range. This indicates that various properties of SBS modified asphalts, such as high-temperature property, low-temperature property, temperature susceptibility and elastic recoverability, are superior to those of the base asphalt. The G* values of the rolling thin-film oven (RTFO) aged asphalt are larger than those of the unaged asphalt in the whole range of frequencies, demonstrating that the anti-rutting performance of asphalt binder is improved after short-term aging.

Sol-gel process and high-temperature property of SiO2/ZrO2-SiO2 composites

2017 ◽  
Vol 43 (1) ◽  
pp. 854-859 ◽  
Author(s):  
Xiang Yang ◽  
Wang Qing ◽  
Cao Feng ◽  
Ma Yin-Wei ◽  
Quan Dong-liang
Keyword(s):  
High Temperature ◽  
Sol Gel ◽  
Temperature Property ◽  
Sol Gel Process ◽  
High Temperature Property

High-temperature property of carbon/carbon composite joints bonded with ternary Ti–Si–C compound

2009 ◽  
Vol 480 (2) ◽  
pp. 747-749 ◽  
Author(s):  
Fengtao Lan ◽  
Kezhi Li ◽  
Hejun Li ◽  
Lingjun Guo ◽  
Yonggang He ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Composite ◽  
Composite Joints ◽  
Temperature Property ◽  
High Temperature Property

Revised Penetration Method Based on Evaluate High Temperature Property of SBS Modified Asphalt

2017 ◽  
Vol 902 ◽  
pp. 3-8
Author(s):  
Sen Han ◽  
Pei Sun ◽  
Ya Min Liu ◽  
Wei Li
Keyword(s):  
High Temperature ◽  
Asphalt Mixture ◽  
Temperature Property ◽  
Modified Asphalt ◽  
Specification Method ◽  
Different Temperatures ◽  
High Temperature Property ◽  
The Difference ◽  
Sbs Modified Asphalt ◽  
Temperature Susceptibility

In order to achieve the penetration method which could reflect the high temperature property of SBS modified asphalt, the paper presented the penetration test of SBS modified asphalt with different types and dosages of SBS modifier at three kinds of penetration weight and four different temperatures. Meanwhile, the high temperature performance of the SBS modified asphalt mixture was studied. It was found that penetration measured under current specification method (25oC, 100g, 5s) could not identify the difference of viscosity and high temperature property of different SBS modified asphalt. When the test conditions are revised to “penetration weight of 150 g, test temperature of 30oC, penetration time of 5s”, the penetration of different SBS modified asphalt measured by revised method could be used to evaluate the temperature susceptibility of SBS modified asphalt accurately and are closely related to the dynamic stability of mixture.

Sign in / Sign up

Export Citation Format

Share Document