Repurposing waste oils into cleaner aged asphalt pavement materials: A critical review

2021 ◽  
pp. 130230
Author(s):  
Haibin Li ◽  
Zixuan Feng ◽  
Abdulakeem Temitope Ahmed ◽  
Mulbah Yombah ◽  
Canyang Cui ◽  
...  
Keyword(s):  
Critical Review ◽  
Asphalt Pavement ◽  
Pavement Materials ◽  
Waste Oils ◽  
Aged Asphalt

Durability of Cement Stabilized Cold-Recycled of Asphalt Pavement Materials

2012 ◽  
Vol 174-177 ◽  
pp. 1188-1192 ◽  
Author(s):  
Lian Yu Wei ◽  
Zhi Yu Guo
Keyword(s):  
Asphalt Pavement ◽  
Base Material ◽  
Road Construction ◽  
Thermal Shrinkage ◽  
Construction Process ◽  
Pavement Materials ◽  
Road Base ◽  
Wide Range ◽  
Dry Shrinkage ◽  
Recycled Material

In recent years, due to the dual pressures of resources and the environment,the clod recycled technology renovation and expansion of the old road and new road construction process increasingly attention increasingly wide range of applications. In this paper, the water stability of the cold recycled materials in asphalt pavement on cement additives, frozen stability, thermal shrinkage resistance, dry Shrinkage thefour indicators of experiments to evaluate its durability, and compared with the typical semi-rigid material. To verify the feasibility of the cold recycled material as road base material.

Reducing the variability of multi-source reclaimed asphalt pavement materials: A practice in China

2021 ◽  
Vol 278 ◽  
pp. 122389
Author(s):  
Jie Gao ◽  
Jiangang Yang ◽  
Di Yu ◽  
Yu Jiang ◽  
Kaiguo Ruan ◽  
...  
Keyword(s):  
Asphalt Pavement ◽  
Reclaimed Asphalt Pavement ◽  
Reclaimed Asphalt ◽  
Pavement Materials

Application of a New Asphalt Pavement Maintenance Agent on Yuhe Road of Chongqing

2011 ◽  
Vol 280 ◽  
pp. 49-53
Author(s):  
Li Ping Qin ◽  
Wei Rong Huang
Keyword(s):  
Preventive Maintenance ◽  
Permeability Coefficient ◽  
Asphalt Pavement ◽  
Curing Agent ◽  
Pavement Maintenance ◽  
Maintenance System ◽  
Water Permeability Coefficient ◽  
Aged Asphalt ◽  
Before And After ◽  
New Type

In this paper, the abilities of recovery and regeneration for aged asphalt of a new type of asphalt pavement maintenance agent are studied. The agent is applied in the construction of test section of Yuhe Road, and the pavement performances before and after the construction are compared. The test indicates that after the maintenance agent is added into aged asphalt, the penetration and ductility are effectively improved, the softening point is lowered. When the penetration depth of agent reaches 6 mm，the texture depth , friction coefficient and antiskid value are improved to some extent ,the water permeability coefficient is reduced, and the appearance of pavement is improved as well，The paper provided reference for the applying curing agent of asphalt pavement to the preventive maintenance system.

Laboratory Investigation of Mixing Hot-Mix Asphalt with Reclaimed Asphalt Pavement

2005 ◽  
Vol 1929 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Baoshan Huang ◽  
Guoqiang Li ◽  
Dragan Vukosavljevic ◽  
Xiang Shu ◽  
Brian K. Egan
Keyword(s):  
Layered Structure ◽  
Hot Mix Asphalt ◽  
Coarse Aggregate ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Reclaimed Asphalt Pavement ◽  
Controlled Experiments ◽  
Reclaimed Asphalt ◽  
Aged Asphalt ◽  
Blending Process

This paper presents a laboratory study in which the blending process of reclaimed asphalt pavement (RAP) with virgin mixture was analyzed through controlled experiments. One type of screened RAP was blended with virgin (new) coarse aggregate at different percentages. A blended mixture containing 20% of screened RAP was subjected to staged extraction and recovery. The result from this experiment indicated that only a small portion of aged asphalt in RAP actually participated in the remixing process; other portions formed a stiff coating around RAP aggregates, and RAP functionally acted as “composite black rock.” The resulting composite layered structure was desirable to improve the performance of the hot-mix asphalt mixture.

Research on the Mechanical Properties of Cement Recycled Reclaimed Asphalt Pavement Mixture

2012 ◽  
Vol 549 ◽  
pp. 715-719
Author(s):  
Shao Wen Du ◽  
Chao Fei Liu
Keyword(s):  
Fatigue Life ◽  
Asphalt Pavement ◽  
Reclaimed Asphalt Pavement ◽  
Test Results ◽  
Reclaimed Asphalt ◽  
Pavement Materials ◽  
Base Materials ◽  
Negative Effect ◽  
Strength And Durability ◽  
Cement Stabilized Base

In this paper, cement is used to stabilize reclaimed asphalt pavement materials (RAP) and original aggregate with the same gradation. Compressive strength, freezing-thawing resistance and fatigue life of cement recycled RAP mixture (CRAPM) and cement stabilize original aggregate mixture (CSAM) are evaluated. Test results indicate the compressive adhesive strength of cement-RAP is lower than cement-original aggregate. At the same gradation, RAP has negative effect on the freezing-thawing resistance of CRAPM, and can increase the fatigue life sensitive to stress level. Therefore, for using 100% RAP, it is necessary to increase the cement content to properly improve the strength and durability of RAPM in order to satisfy the specification of cement stabilized base materials in china.

scholarly journals Towards the Use of Waste Pig Fat as a Novel Potential Bio-Based Rejuvenator for Recycled Asphalt Pavement

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 1002
Author(s):  
Nader Nciri ◽  
Taesub Shin ◽  
Namho Kim ◽  
Arnaud Caron ◽  
Hanen Ben Ismail ◽  
...  
Keyword(s):  
Low Temperature ◽  
Asphalt Pavement ◽  
Fatigue Cracking ◽  
Recycled Asphalt ◽  
Excellent Thermal Stability ◽  
Temperature Performance ◽  
Aged Asphalt ◽  
Ft Ir ◽  
Low Temperature Performance ◽  
The Impact

This article presents a novel potential bio-based rejuvenator derived from waste pig fat (WPF) for use in recycled asphalt applications. To achieve this purpose, the impact of different doses waste pig fat (e.g., 0, 3, 6, and 9 wt.% WPF) on the reclaimed asphalt pavement binder (RAP-B) performance is investigated. The unmodified and WPF-modified asphalts are characterized by means of Fourier-transform infrared spectroscopy (FT-IR), thin-layer chromatography–flame ionization detection (TLC-FID), scanning electron microscopy (SEM), atomic force microscopy (AFM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Physico-rheological properties of asphalt blends are assessed through Brookfield viscometer, softening point, penetration, and dynamic shear rheometer (DSR) tests. TLC-FID data highlighted that incremental WPF addition into RAP-B restored its original balance maltenes-to-asphaltenes ratio; finding which was supported by FT-IR analysis. SEM disclosed that WPF has a great compatibility with the aged asphalt. AFM observations showed that grease treatment induced a decline in surface roughness (i.e., bee structures) and a rise in friction force (i.e., para-phase dimension) of RAP binder. TGA/DSC studies revealed that the bio-modifier not only possesses an excellent thermal stability but also can substantially enhance the binder low-temperature performance. Empirical and DSR tests demonstrated that WPF improved the low-temperature performance grade of RAP-B, reduced its mixing and compaction temperatures, and noticeably boosted its fatigue cracking resistance. The rejuvenation of aged asphalt employing WPF is feasible and can be an ideal approach to recycle both of RAP and waste pig fats.

Sign in / Sign up

Export Citation Format

Share Document