Study on Properties and Pavement Performance of Anti-Flaming and Warm-Mix SBS Modified Asphalt

2011 ◽  
Vol 97-98 ◽  
pp. 367-372 ◽  
Author(s):  
Yang Cheng Huang ◽  
Zhao Yi He
Keyword(s):  
Orthogonal Experiment ◽  
Asphalt Mixture ◽  
Fire Retardant ◽  
Temperature Property ◽  
Modified Asphalt ◽  
Water Sensitivity ◽  
Property Loss ◽  
Lower Temperature ◽  
Sbs Modified Asphalt ◽  
Low Temperature Property

In order to solve problems such as environmental contamination, large resource consuming, and the inflammability of present asphalt mixture, a warm-mix agent was chosen and fire retardant was added to asphalt to modify its characteristics. The anti-flaming and warm-mix asphalt has been produced in the orthogonal experiment, and its road property and anti-flaming property lived up to expectation. The experiment shows that under the condition of a lower temperature (15-20°C lower than the the mix temperature), the rutting resistance of the anti-flaming and warm-mix SBS modified asphalt , but its low temperature property and water sensitivity decreased. This asphalt has excellent anti-flaming characteristic, and thus it can decrease the property loss in case of fire.

Study on Properties and Pavement Performance of Anti-Flaming and Warm-Mix Asphalt

2011 ◽  
Vol 71-78 ◽  
pp. 803-808
Author(s):  
Zhao Yi He ◽  
Yang Cheng Huang ◽  
Gang Huang
Keyword(s):  
Orthogonal Experiment ◽  
Asphalt Mixture ◽  
Fire Retardant ◽  
Warm Mix Asphalt ◽  
Pavement Performance ◽  
Stability Characteristic ◽  
Temperature Property ◽  
High Temperature Property ◽  
Property Loss ◽  
Low Temperature Property

In order to solve the problems of environmental contamination, large resource consuming and inflammability of asphalt mixture, this research chooses warm-mix agent and fire retardant to double modify the asphalt. After obtain the method to produce the anti-flaming and warm-mix asphalt through orthogonal experiment, its road property and anti-flaming property are valued. According to the experiment result, under the condition of cooling down 30°C of the mix temperature, the modified anti-flaming and warm-mix asphalt can increase the high temperature property of the asphalt mixture, but decrease the low temperature property and water stability characteristic of it. This asphalt has excellent anti-flaming characteristic, so it can decrease the property loss after being burnt.

scholarly journals Enhancing Effect of Waste Engine Oil Bottom Incorporation on the Performance of CR+SBS Modified Bitumen: A Sustainable and Environmentally-Friendly Solution for Wastes

2021 ◽  
Vol 13 (22) ◽  
pp. 12772
Author(s):  
Changjiang Liu ◽  
Qiuping Wang
Keyword(s):  
Asphalt Binder ◽  
Engine Oil ◽  
Chemical Compositions ◽  
Self Healing ◽  
Temperature Property ◽  
Modified Bitumen ◽  
Modified Asphalt ◽  
Waste Engine Oil ◽  
Sbs Modified Asphalt ◽  
Low Temperature Property

Waste engine oil bottom (WEOB) is a hazardous waste whose effect as an additive to CR+SBS modified asphalt is rarely studied. In this study, the CR+SBS asphalt binder was modified with WEOB in different concentrations (3, 6, and 9 wt%). The GC–MS and FTIR were performed to evaluate the chemical compositions of WEOB and WEOBCR+SBS asphalt. The results showed that the main constituents of WEOB were similar to the functional groups of asphalt, along with maleic anhydride (MAH). Pavement performance-related rheological tests such as RV, temperature sweep (TS), FS, MSCR, and BBR were carried out. Results show that WEOBCR+SBS-6 exhibited the best high- and low-temperature property, followed by CR+SBS-3 and CR+SBS-9. Fluorescence microscope (FM) test, bar thin layer chromatograph (BTLC) test, FTIR, and AFM tests were carried out to evaluate the micro-morphologies and modification mechanism. The analysis revealed increased trends in resin fraction as opposed to asphaltene fraction with the increase of WEOB content. FTIR analysis revealed that the amide groups in WEOBCR+SBS asphalt bonded to the free radicals of CR. Moreover, a modification mechanism was elaborated. WEOB strengthens the cross-linked structure of CR+SBS polymers, reacting with SBS to graft onto MAH-g-SBS, and the free radical of CR interacts with the amide group in WEOB to form a bond. In addition, the content of lightweight components and surface roughness of SBS specimens were in good correlation, which contributed to the rutting resistance and adhesion and self-healing performance.

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.

Design and Evaluation of Ultra Thin Friction Courses Asphalt Mixture Modified by Polyolefin

2013 ◽  
Vol 723 ◽  
pp. 41-49 ◽  
Author(s):  
Yong Sheng Guan ◽  
Feng Wei An ◽  
Chao Han ◽  
Zhi Xiang Zhang
Keyword(s):  
Asphalt Mixture ◽  
Field Tests ◽  
Great Difficulty ◽  
Test Results ◽  
Modified Asphalt ◽  
Water Sensitivity ◽  
Temperature Performance ◽  
Repair Materials ◽  
Laboratory Test Results ◽  
Sbs Modified Asphalt

Because of the small thickness, the mixture temperature of Ultra Thin Friction Courses (UTFC) decreased quickly during construction process, which causes the great difficulty to guarantee the pavement compaction, especially for the dense gradation asphalt mixture. In order to solve this problem, Polyolefin and SBS modified asphalt (Abbrev. PSA) mixture was designed. Volumetric properties, compaction characteristics, water sensitivity, as well as high/low temperature performance of the mixture were investigated. Laboratory test results show the PSA mixture has very good high temperature performance and other beneficial characteristics. Field tests show that the new asphalt mixture possesses very good pavement performance, as well as easily to be constructed. The PSA mixture can be used as preventive maintenance and repair materials.

scholarly journals Resistance to Ultraviolet Aging of Nano-SiO2 and Rubber Powder Compound Modified Asphalt

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5067 ◽  
Author(s):  
Guoping Qian ◽  
Changdong Yang ◽  
Haidong Huang ◽  
Xiangbing Gong ◽  
Huanan Yu
Keyword(s):  
Uv Light ◽  
Temperature Property ◽  
Uv Aging ◽  
Rubber Powder ◽  
Modified Asphalt ◽  
Nano Sio2 ◽  
Aging Property ◽  
Compound Modification ◽  
Ultraviolet Aging ◽  
Low Temperature Property

Ultraviolet (UV) aging degrades the life span of asphalt pavement, nanomaterials used as modifiers exhibit good shielding function on UV light, but generally degrade the low-temperature property of asphalt, a compound modification was found to be a solution. In this study, nano-SiO2 and rubber powder were blended together with base asphalt to prepare compound modified asphalt. Compound modified asphalt with different blending dosages were subjected to UV light via a self-made UV aging simulation chamber. Basic performance tests and rheological tests were conducted including the UV aging influence. An optimum compound ratio was finally recommended based on the goal to remove the adverse effect of nano-SiO2 on the thermal cracking. Results show that the anti-UV aging property of asphalt is improved obviously due to the blocking function of nano-SiO2 and carbon black in rubber powder, and the enhancing effect of nano-SiO2 is found to be the most significant.

Application on Fiber-Enhanced Asphalt Mixture in Surface Layer of Large Longitudinal Slope Pavement of Xi-Sang Highway

2014 ◽  
Vol 599 ◽  
pp. 282-286 ◽  
Author(s):  
Chun Gang Zhang ◽  
Yan Jun Xie ◽  
Lin Chun Meng ◽  
Qin Yong Li
Keyword(s):  
Surface Layer ◽  
High Temperature ◽  
Low Temperature ◽  
Dynamic Modulus ◽  
Asphalt Mixture ◽  
Modified Asphalt ◽  
Longitudinal Slope ◽  
Sbs Modified Asphalt ◽  
Test Result ◽  
Temperature Dynamic

This paper investigated into the application of fiber-enhanced asphalt mixture in surface layer of the large longitudinal slope pavement of Xi-Sang Highway. Asphalt mixture with and without polyester fiber were used. Focus is on resistance of deformation at high temperature and flexibility at low temperature. Fiber-enhanced asphalt mixture with dynamic stability above 7000 passes/mm indicated excellent rutting resistance. The high temperature dynamic modulus of fiber-enhanced asphalt mixture was much higher than conventional SBS modified asphalt mixture. Three-point blending test result indicated that the maximum flexural strain of fiber-enhance asphalt mixture reached 4180μm/m. It was concluded that fiber-enhanced asphalt mixture was suit to be used in surface layer of the large longitudinal slope pavement of Xi-Sang Highway.

scholarly journals High Temperature Performance of SBS and LM-S Modified Asphalt Mixtures by Triaxial Test

2021 ◽  
Vol 293 ◽  
pp. 02029
Author(s):  
Tang-Baoli ◽  
Ren-yongqiang ◽  
Chen-Xiangmei ◽  
Hou-Huifang ◽  
Liang-Jianping
Keyword(s):  
High Temperature ◽  
Creep Rate ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Deviatoric Stress ◽  
Repeated Loading ◽  
Flow Number ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Sbs Modified Asphalt

In order to study the high temperature performance of LM-S modified asphalt mixture and SBS modified asphalt mixture, repeated loading creep test was used to study the influence of temperature and deviatoric stress on the axial permanent deformation of the two kinds of asphalt mixture. At the same time, Permanent deformation, ε@5000, flow number FN and creep rate were select to evaluation of high temperature performance from different directions. The results show that the ε@5000 and creep rate are failed in the condition of high temperature and large deviatoric stress, so it hast widely practicable. The flow number FN is also limited by the conditions, which leads to the distortion of the flow number at lower temperature and smaller deviatoric stress so it is not easy to direct used as the evaluation index. Axial permanent deformation can reflect the permanent deformation in different cycles which is an excellent index to evaluate the high temperature performance of the two kinds of asphalt mixture, it is recommended to use axial permanent deformation to compare the LM-S modified asphalt mixture and SBS modified asphalt mixture The experimental results show that the axial permanent deformation of the LM-S modified asphalt mixture is always less than that of SBS modified asphalt mixture,it indicating that the high temperature rutting resistance of the LM-S modified asphalt mixture is better than that of SBS modified asphalt mixture.

scholarly journals Mechanism and Rheological Properties of High-Modulus Asphalt

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Xinquan Xu ◽  
Guilin Lu ◽  
Jun Yang ◽  
Xinhai Liu
Keyword(s):  
High Temperature ◽  
Fluorescence Microscopy ◽  
Infrared Spectrum ◽  
Dynamic Modulus ◽  
Viscoelastic Properties ◽  
Asphalt Mixture ◽  
Superior Performance ◽  
High Modulus ◽  
Modified Asphalt ◽  
Sbs Modified Asphalt

High-modulus asphalt concrete (HMAC) is considered as an effective paving material for addressing the increasing heavy traffic and rutting problems. Therefore, one high-modulus agent was used in this study to prepare high-modulus asphalt binder with different dosages. The objective of this study is to investigate the performance and modification mechanism of high-modulus asphalt. The effects of high-modulus agent on the viscoelastic properties of asphalt with different dosages were quantified via rheological tests as compared to base binder and styrene-butadiene-styrene- (SBS-) modified asphalt. Moreover, the modification mechanism of the high-modulus agent was examined using fluorescence microscopy and infrared spectrum test. Based on rutting and dynamic modulus tests, the differences of road performances between high-modulus modified asphalt mixture and SBS-modified asphalt mixture were compared. The results demonstrate that the high-modulus agent improves the high-temperature performance and viscoelastic properties of the matrix asphalt. When the dosage increases to 6.67%, the modification effect is better than that of the SBS-modified asphalt. Furthermore, the results of the rutting test show that the high-modulus modified asphalt mixture has better resistance to deformation than the SBS-modified asphalt mixture. The dynamic modulus test further demonstrates that the high-modulus modified asphalt mixture exhibits superior performance in high-temperature range. Fluorescence microscopy shows that the high-modulus agent particles can swell in the asphalt to form polymer links that improve the viscoelastic properties of the asphalt. Based on the results of the infrared spectrum test, it can be concluded that a high-modulus agent changes the asphalt matrix via physical blending modification.

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