TY - JOUR
T1 - Performance and mechanism evaluation of dopamine-hexamethylene diamine-iron tetraoxide composite rubber powder incorporated styrene-butadiene-styrene modified asphalt
AU - Li, Jing
AU - Wang, Shanshan
AU - Liu, Yu
AU - Lin, Hongfei
AU - Pei, Ruinan
AU - Muhammad, Yaseen
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/10/10
Y1 - 2022/10/10
N2 - In order to improve the mechanical properties, high temperature rheological properties, and self-healing of modified asphalt, the microwave absorber iron tetraoxide (Fe3O4) was modified and polydopamine-hexamethylene diamine-Fe3O4 (PDA-HDA-Fe3O4) was prepared, which was compounded with rubber powder/styrene butadiene styrene modified asphalt (RP-SBS-MA). Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analyses confirmed that chemical composition and crystal morphology of PDA-HDA-Fe3O4 remained unchanged. Scanning electron microscopy and atomic force microscopy revealed that the surface morphology of the modified Fe3O4 was altered which could increase the mechanical interlocking interaction with the base asphalt. Dynamic shear rheometer test showed that at 46 °C, the storage modulus and loss modulus of 1 %PDA-HDA-Fe3O4/RP-SBS-MA were respectively 61.96 % and 69.65 % higher compared to that of RP-SBS-MA. The results of the multi-stress creep recovery test showed that at 3.2 kPa, the strain of 1 %PDA-HDA-Fe3O4/RP-SBS-MA was reduced by 54.16 % compared to that of RP-SBS-MA. Microwave heating tests analysis showed that the temperature of 1 %PDA-HDA-Fe3O4/RP-SBS-MA was 20.48 % and 2.41 % higher than those of RP-SBS-MA and 1 %Fe3O4/RP-SBS-MA, respectively. This was attributed to the improved microwave absorption capacity of the modified asphalt upon the addition of PDA-HDA-Fe3O4. These convincing results of the newly prepared PDA-HDA-Fe3O4/RP-SBS-MA could be envisioned of great promise for designing advanced functional asphalts for targeted applications.
AB - In order to improve the mechanical properties, high temperature rheological properties, and self-healing of modified asphalt, the microwave absorber iron tetraoxide (Fe3O4) was modified and polydopamine-hexamethylene diamine-Fe3O4 (PDA-HDA-Fe3O4) was prepared, which was compounded with rubber powder/styrene butadiene styrene modified asphalt (RP-SBS-MA). Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analyses confirmed that chemical composition and crystal morphology of PDA-HDA-Fe3O4 remained unchanged. Scanning electron microscopy and atomic force microscopy revealed that the surface morphology of the modified Fe3O4 was altered which could increase the mechanical interlocking interaction with the base asphalt. Dynamic shear rheometer test showed that at 46 °C, the storage modulus and loss modulus of 1 %PDA-HDA-Fe3O4/RP-SBS-MA were respectively 61.96 % and 69.65 % higher compared to that of RP-SBS-MA. The results of the multi-stress creep recovery test showed that at 3.2 kPa, the strain of 1 %PDA-HDA-Fe3O4/RP-SBS-MA was reduced by 54.16 % compared to that of RP-SBS-MA. Microwave heating tests analysis showed that the temperature of 1 %PDA-HDA-Fe3O4/RP-SBS-MA was 20.48 % and 2.41 % higher than those of RP-SBS-MA and 1 %Fe3O4/RP-SBS-MA, respectively. This was attributed to the improved microwave absorption capacity of the modified asphalt upon the addition of PDA-HDA-Fe3O4. These convincing results of the newly prepared PDA-HDA-Fe3O4/RP-SBS-MA could be envisioned of great promise for designing advanced functional asphalts for targeted applications.
KW - Mechanical properties
KW - Microscopic characterization
KW - PDA-HDA-FeO
KW - Rubber powder/SBS modified asphalt
KW - Self-healing ability
UR - http://www.scopus.com/inward/record.url?scp=85136576145&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2022.128953
DO - 10.1016/j.conbuildmat.2022.128953
M3 - Article
AN - SCOPUS:85136576145
SN - 0950-0618
VL - 351
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 128953
ER -