胶粉改性沥青及其混合料路用性能研究

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厄堪贲
5 years ago
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1 U The Research on Pavement Performance of Crumb Rubber Modified Asphalt and Asphalt Mixture (Funded by Research Institute of Highway Ministry of Communications)

3 TOR VESTENAMER TOR DSRBBRBrookfield PG TOR PG PG I

4 Abstract Abstract This subproject belongs to The research on performance and application of high-performance crumb rubber modified asphalt and asphalt mixtures, the goal of this paper is to research and evaluate the performance of crumb rubber modified asphalt and asphalt mixtures, to provide the technical basis for Yunnan province s applications of this kind of material. The research is mainly divided into four parts: In the first part, firstly, this part analyzes the meteorologic data of WenshanZhou region of Yunnan province. According to the weather characters and the local materials characters, on the basis of the analysis and conclusion on the domestic and foreign study, meanwhile, in the light of SHRP s achievements, this part make a climate district depend on the asphalt pavement temperature. This will provide a certain frame of reference when crumb rubber modified asphalt is used in the area. WenshanZhou region belongs to the area where hot and wet in summer and warm in winter, so when we design asphalt pavement, high temperature performance and moisture susceptibility are the principal factors which we should consider. In the second part, the performance of crumb rubber modified asphalt is evaluated and analyzed through ordinary tests of the penetration system, and the optimal laboratory preparation craft of crumb rubber modified asphalt is brought forward. And we use a modified composite technology with TOR VESTENAMER admixture, It is discovered that the high temperature performance,the low temperature performance and the anti-aging performance of this binder can be significantly improved, the performances of crumb rubber modified asphalt are compared with 70# basic asphalt, SBS modified asphalt and analyzed with PG appraisal system through DSR, BBR and Brookfield revolving viscosity tests. The experiments indicate that both high and low temperature grades of crumb rubber modified asphalt are enhanced, and the anti-rutting factor increased. Both high temperature stability and low temperature performance of crumb rubber modified asphalt is also enhanced greatly, the thermal sensitivity reduced after modification. In the end, this part study the penetration system and PG appraisal system s applicability of crumb rubber modified asphalt. In the third part, the research raises the engineering design grading envelope of AC-16C crumb rubber modified asphalt mixture which is applicable to the asphalt pavement of high-grade highway in WenshanZhou regionand raises the typical II

5 Abstract grading finally. studied the crumb rubber modified asphalt mixture s road use performance using a comparative test method, analyzed on the performance of the systems through its high-temperature rutting resistance, dynamic modulus under high temperature, moisture susceptibility, and low temperature resistance dehisce capability. The test results showed that crumb rubber modified asphalt mixtures can significantly improve the rutting resist and the low temperature resistance dehisce capability. slightly reduced the moisture susceptibility, but also can satisfy index of corresponding criterion. Finally, this paper researched on the crumb rubber modified asphalt mixtures construction technology and quality control methods. at lastthis paper analyzed its prominent economical benefit, environmental and social benefit. Key wordscrumb rubber modified asphaltcrumb rubber modified asphalt mixturesclimate district PG appraisal systemthe penetration systempavement performanceevaluationdynamic modulusconstruction technologyquality control III

8 SPTE *

9 1

10 2

11 3

12 60 SAM 70 SAMI

13 0.1mm 5

14 SBS 6

15 7

16 km 8

17 9

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20 12

21 m/s 13

22 14

23 SHRP 15

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28 TORVESTENAMER TORVESTENAMER TORVESTENAMER 20

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31 RTFOT P.I T 800 T DSR RTFOTPAV BBR Brookfield 23

32 24

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35 TORVESTENAMER 27

36 28

37 29

38 TORVESTENAMER TOR TOR TORVESTENAMER TOR 30

39 x y = e 1 y = e x (Pa.s) y = 2668e x () 31

40 TORVESTENAMER TORVESTENAMER TORVESTENAMER 32

41 33

42 34

43 35

44 36

45 T 1.2 T 1.2 G * m 37

46 1 2 TORVESTENAMER 3SHRPPG TORVESTENAMER 4 5G * m 38

47 39

48 40

49 SBS 41

50 42

51 ARAC-13 AC-13C 43

52 44

53 45

54 46

55 47

56 48

57 TOR TOR 49

58 * 50

59 SPTE * E * σ E * 0 ε 0 Ti ϕ = (360) T p E * ϕ σ 0 ε 0 T p T i 51

60 Simple Performance Tester 52

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67 a5 a * * * a a f a T a T f E = a 1 * a 2 ft i=12,3 8 a i 59

68 3 TOR 60

69 µε µε TOR 61

70 62

71 63

72 , ,MPa TOR

73 µε µε 65

74 1) 3) TOR 5) 6) TORVESTENAMER 66

75 146 K K km 4 AC16C 6 AC20CA 70 8 AC25CA K154810K K154870K K171200K

76 K154810K K154870K K171200K

77 69

78 TOR

79 TOR 71

80 72

81 σ σ 73

82 12 3 SBS SBS J =A+B*C/1+C 61 J A B 40 SBS C SBS /tsbs /t SBS SBS SBS 74

83 Life Cycle Cost AnalysisLCCA LCC 0 in i n t *[ it it ] in * n 62 t= 1 LCC = ICC + pvr MC + UC SV pvr LCCin i n ICC i i pvr t t MC i t UC i t SV in it i pvr n 1 pvr t = (1 + r) t 63 r n it 75

84 12 3,,

85 (1995) (2001), EPAAP-42 NIOSH 77

86 23 60 TOC mg/l TOR

87 79

88 1 2 3 TORVESTENAMER 4SHRPPG TORVESTENAMER 5 G * m 6 7 TOR 8 80

89 9 10 TORVESTENAMER 11 TORVESTENAMER TOR VESTENAMER

90 [9]

91 83

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93 85

SEAM沥青混合料路用性能评价与改善技术研究

SEAM沥青混合料路用性能评价与改善技术研究 U416 110814030603 Study on Performance Evaluation and Improvement of SEAM Asphalt Mixture (Supported by the department of Science and education of ministry of transport, No.) 2008 11 2008 12 2009 3 2008