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Frontiers of Structural and Civil Engineering

ISSN 2095-2430

ISSN 2095-2449(Online)

CN 10-1023/X

邮发代号 80-968

2019 Impact Factor: 1.68

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Frontiers of Structural and Civil Engineering  2022, Vol. 16 Issue (1): 99-116   https://doi.org/10.1007/s11709-021-0799-4
  本期目录
Investigation of effects of Cocamide Diethanolamide chemical on physical and rheological properties of bituminous binder
Gizem KAÇAROĞLU(), Mehmet SALTAN
Department of Civil Engineering, Suleyman Demirel University, Isparta 32200, Turkey
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Abstract：

In this study, bituminous binder was modified with Cocamide Diethanolamide chemical, a non-ionic surfactant, and the physical and rheological properties of modified binders were investigated. In addition, Cocamide Diethanolamide has been used for the first time to modify bituminous binder, and this situation makes the study distinctive. Bituminous binder was modified more than once with the chemical by changing modification parameters and using certain additive ratios (1%, 3%, and 5%). The effects of different modification parameters and chemical additive on modified samples were investigated with conventional bitumen tests (softening point, penetration, ductility) and Superpave tests (rotational viscometer, rolling thin film oven test, pressure aging vessel, dynamic shear rheometer, bending beam rheometer). In addition, the structural characteristics of the reference binder and modified samples were examined by X-ray diffraction, Fourier Transform Infrared Spectroscopy, scanning electron microscopy, and energy dispersive X-ray spectroscopy. The examinations showed that Cocamide Diethanolamide softens bituminous binder and lowers processing temperatures. In addition, compared to reference binder, rutting resistances of modified bituminous binders decreased with the increase of additive ratio. However, modification with Cocamide Diethanolamide increased the resistance to fatigue cracks and thermal cracks.
Key words： Cocamide Diethanolamide    bitumen modification    rheology    Superpave tests
收稿日期: 2021-02-03      出版日期: 2022-03-07
Corresponding Author(s): Gizem KAÇAROĞLU   
 引用本文:   
. [J]. Frontiers of Structural and Civil Engineering, 2022, 16(1): 99-116.
Gizem KAÇAROĞLU, Mehmet SALTAN. Investigation of effects of Cocamide Diethanolamide chemical on physical and rheological properties of bituminous binder. Front. Struct. Civ. Eng., 2022, 16(1): 99-116.
 链接本文:  
https://academic.hep.com.cn/fsce/CN/10.1007/s11709-021-0799-4
https://academic.hep.com.cn/fsce/CN/Y2022/V16/I1/99
test average result standard
penetration (0.1 mm) 64 TS EN 1426
softening point (°C) 47.3 TS EN 1427
ductility (cm) >100 TS EN 13589
RV (cP) – ASTM D 4402
　135 °C 373
　165 °C 106.7
specific gravity (g/cm3) 1.021 TS EN 15326 + A1
RTFOT (loss in mass) (%) 0.0077 TS EN 12607-1
DSR (64 °C) – TS EN 14770
　 G*/sin δ (Pa) 1555.65
　phase angle (° ) 88.23
BBR (–18 °C) – TS EN 14771
　stiffness (MPa) 232.7498
　 m value 0.273
Tab.1  
Fig.1  
property value
boiling point (°C) 169–275
melting point (°C) 23–35
specific gravity (g/cm3) 0.976–0.99
pH (1% solution) 9
Tab.2  
test set additive ratio modification temperature (°C) modification time (min) mixing speed (r/min)
1 1% 155 30 1000
3%
5%
2 1% 60
3%
5%
3 1% 90
3%
5%
4 1% 165 30
3%
5%
5 1% 60
3%
5%
6 1% 90
3%
5%
7 1% 155 30 2000
3%
5%
8 1% 60
3%
5%
9 1% 90
3%
5%
10 1% 165 30
3%
5%
11 1% 60
3%
5%
12 1% 90
3%
5%
Tab.3  
Fig.2  
Fig.3  
Fig.4  
sample additive ratio mixing temperature (°C) compaction temperature (°C)
reference binder – 157.9 145.5
Set 2 1% 155.5 141.2
Set 2 3% 151.6 134.7
Set 2 5% 148.5 129.6
Set 10 1% 156.3 142.6
Set 10 3% 152.1 135.3
Set 10 5% 148.4 129.3
Tab.4  
Fig.5  
Fig.6  
Fig.7  
Fig.8  
sample additive ratio high temperature PG intermediate temperature low temperature PG PG classification
reference binder – 64 22 –12 64-22
Set 2 1% 64 19 –12 64-22
Set 2 3% 58 13 –12 58-22
Set 2 5% 58 16 –18 58-28
Set 10 1% 64 19 –12 64-22
Set 10 3% 58 13 –12 58-22
Set 10 5% 58 16 –18 58-28
Tab.5  
Fig.9  
Fig.10  
sample additive ratio carbon (wt.%) oxygen (wt.%) sulphur (wt.%)
reference binder – 92.89 1.95 5.16
Set 2 1% 91.42 3.79 4.79
Set 2 3% 90.93 4.26 4.81
Set 2 5% 83.7 9.98 6.32
Set 10 1% 90.07 4.5 5.44
Set 10 3% 89.91 5.3 4.79
Set 10 5% 88.68 6.7 4.62
Tab.6  
Fig.11  
Fig.12  
Fig.13  
Fig.14  
Fig.15  
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