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| Content Provider | frontiers |
|---|---|
| Author | Zhang, Wencai Hao, Xiaogang Fan, Changxin Zhang, Shuai Ma, Dechong Yu, Xiaofang Fu, Zhaohua Feng, Gongji |
| Abstract | In this study, a ternary blend modifier (TBM) was prepared with RPE, RPP, and various dosages of PP-g-MAH (i.e., 0%, 1%, 3%, 5%, 7%, and 9% by weight of RPE and RPP) by a twin-screw extruder. The performance of TBM (4% by weight of asphalt) modified asphalt was studied, with the increase of PP-g-MAH content, the penetration decreases gradually, but softening point and viscosity increases and ductility exists minimum value at 7% content, with the increasing of PP-g-MAH percentage, the dynamic rheological properties show that |G*| increases, while the δ and |G*|cosδ decrease, and the fatigue performance (|G*|sinδ) of TBM modified asphalt is worse than virgin asphalt. Dynamic stability test shows that TBM shows the prominent high-temperature properties of a modified (asphalt mixture. BBR test indicates that the m-value of asphalt modified with TBM does not fulfill the requirements (m-value>0.3) except at 5% and 7%, but the S meets the standard requirements (S < 300 MPa), and increases from 0% to 7%, then decreases slightly. In order to illuminate possible reasons, a chemical reaction (ester compounds generated) and physical twines of concerned polymer molecules were put forward, and the results were confirmed by infrared analysis. |
| ISSN | 22968016 |
| DOI | 10.3389/fmats.2022.814551 |
| Volume Number | 9 |
| Journal | Frontiers in Materials |
| Language | English |
| Publisher Date | 2022-04-27 |
| Access Restriction | Open |
| Subject Keyword | PP-g-MAH Properties Asphalt Recycled polypropylene (RPP) Recycled polyethylene (RPE) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Materials Science |
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