1、Standard Specification for Performance-Graded Hot-Poured Asphalt Crack Sealant AASHTO Designation: MP 25-171Technical Section: 4e, Joints, Bearings, and Geosynthetics Release: Group 2 (June 2017) American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite
2、249 Washington, D.C. 20001 TS-4e MP 25-1 AASHTO Standard Specification for Performance-Graded Hot-Poured Asphalt Crack Sealant AASHTO Designation: MP 25-171Technical Section: 4e, Joints, Bearings, and Geosynthetics Release: Group 2 (June 2017) 1. SCOPE 1.1. This specification covers hot-poured aspha
3、lt crack sealant graded by performance. Upon grading for performance, the hot-poured asphalt crack sealant will be assigned a sealant grade (SG) designation (e.g., SG 52-16). Grading designations are related to the average 7-day maximum pavement design temperature and the minimum pavement design tem
4、perature shown in Table 1. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 323, Superpave Volumetric Mix Design R 35, Superpave Volumetric Design for Asphalt Mixtures R 66, Sampling Asphalt Materials T 366, Apparent Viscosity of Hot-Poured Asphalt Crack Sealant Using Rotational Viscometer T 367, Ac
5、celerated Aging of Hot-Poured Asphalt Crack Sealant Using a Vacuum Oven T 368, Measuring Low-Temperature Flexural Creep Stiffness of Hot-Poured Asphalt Crack Sealant by Bending Beam Rheometer (BBR) T 369, Evaluation of the Low-Temperature Tensile Property of Hot-Poured Asphalt Crack Sealant by Direc
6、t Tension Test T 370, Measuring Adhesion of Hot-Poured Asphalt Crack Sealant Using Direct Adhesion Tester T 371, Measuring Interfacial Fracture Energy of Hot-Poured Asphalt Crack Sealant Using a Blister Test TP 126, Evaluation of the Tracking Resistance of Hot-Poured Asphalt Crack Sealant by Dynamic
7、 Shear Rheometer (DSR) 2.2. ASTM Standard: D5167, Standard Practice for Melting of Hot-Applied Joint and Crack Sealant and Filler for Evaluation 3. TERMINOLOGY 3.1. Definition: 2017 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violat
8、ion of applicable law.TS-4e MP 25-2 AASHTO 3.1.1. hot-poured asphalt crack sealantpolymer or rubber modified asphalt material most often formulated with mineral filler, used in pavement cracks and joints. Note 1Based on the references, hot-poured asphalt crack sealant is typically applied at a tempe
9、rature of 160C or above. 4. ORDERING INFORMATION 4.1. When ordering under this specification, include in the purchase order the sealant grade (SG) designation of the hot-poured asphalt crack sealant required (e.g., (1) MP 25, SG 52-16, or (2) MP 25, SG 64-34). 5. MATERIALS AND MANUFACTURE 5.1. Aspha
10、lt binder of the hot-poured asphalt crack sealant shall be prepared by the refining of crude petroleum by suitable methods, with or without the addition of modifiers. 5.2. Modifiers may be any organic material of suitable manufacture that is used in virgin or recycled condition and that is dissolved
11、, dispersed, or reacted in asphalt binder to enhance its performance. 5.3. The asphalt binder shall be homogeneous, free from water and deleterious materials, and shall not foam when heated to 175C. 5.4. The grade of hot-poured asphalt crack sealant shall conform to the requirements given in Table 1
12、. 2017 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-4e MP 25-3 AASHTO Table 1Minimum Pavement Design Temperatures Crack Sealant Performance Grade SG 46 SG 52 SG 58 Average 7-day max pavement design temp
13、erature, C 46 52 58 Min pavement design temperature, C 46 40 34 28 22 16 10 46 40 34 28 22 16 10 46 40 34 28 22 16 10 Apparent Viscosity, T 366 Installation Temperature Maximum Viscosity (Pas) 3.5 Minimum Viscosity (Pas) 1.0 Vacuum Oven Residue (T 367) Dynamic Shear, TP 126 46 52 58 Minimum Flow Coe
14、ff. (kPas) 4 Minimum Shear Thinning 0.7 Crack Sealant BBR, T 368 40 34 28 22 16 10 4 40 34 28 22 16 10 4 40 34 28 22 16 10 4 Maximum Stiffness (MPa) 25 Minimum Avg. Creep Rate 0.31 Crack Sealant DTT, T 369 40 34 28 22 16 10 4 40 34 28 22 16 10 4 40 34 28 22 16 10 4 Minimum Extendability (%) 85 85 70
15、 55 40 25 10 85 85 70 55 40 25 10 85 85 70 55 40 25 10 Crack Sealant AT, T 370 40 34 28 22 16 10 4 40 34 28 22 16 10 4 40 34 28 22 16 10 4 Minimum Load (N) 50 aPavement temperatures are estimated from air temperatures using an algorithm contained in the LTPP Bind program or may be provided by the sp
16、ecifying agency, or by following the procedures as outlined in M 323 and R 35. Continued on next page. 2017 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-4e MP 25-4 AASHTO Table 1Minimum Pavement Design
17、Temperatures (Continued) Crack Sealant Performance Grade SG 64 SG 70 SG 76 Average 7-day max pavement design temperature, C 64 70 76 Min pavement design temperature, C 46 40 34 28 22 16 10 46 40 34 28 22 16 10 46 40 34 28 22 16 10 Apparent Viscosity, T 366 Installation Temperature Maximum Viscosity
18、(Pas) 3.5 Minimum Viscosity (Pas) 1.0 Vacuum Oven Residue (T 367) Dynamic Shear, TP 126 64 70 76 Minimum Flow Coeff. (kPas) 4 Minimum Shear Thinning 0.7 Crack Sealant BBR, T 368 40 34 28 22 16 10 4 40 34 28 22 16 10 4 40 34 28 22 16 10 4 Maximum Stiffness (MPa) 25 Minimum Avg. Creep Rate 0.31 Crack
19、Sealant DTT, T 369 40 34 28 22 16 10 4 40 34 28 22 16 10 4 40 34 28 22 16 10 4 Minimum Extendability (%) 85 85 70 55 40 25 10 85 85 70 55 40 25 10 85 85 70 55 40 25 10 Crack Sealant AT, T 370 40 34 28 22 16 10 4 40 34 28 22 16 10 4 40 34 28 22 16 10 4 Minimum Load (N) 50 aPavement temperatures are e
20、stimated from air temperatures using an algorithm contained in the LTPP Bind program or may be provided by the specifying agency, or by following the procedures as outlined in M 323 and R 35. Continued on next page. 2017 by the American Association of State Highway and Transportation Officials.All r
21、ights reserved. Duplication is a violation of applicable law.TS-4e MP 25-5 AASHTO Table 1Minimum Pavement Design Temperatures (Continued) Crack Sealant Performance Grade SG 82 Average 7-day max pavement design temperature, C 82 Min pavement design temperature, C 46 40 34 28 22 16 10 Apparent Viscosi
22、ty, T 366 Installation Temperature Maximum Viscosity (Pas) 3.5 Minimum Viscosity (Pas) 1.0 Vacuum Oven Residue (T 367) Dynamic Shear, TP 126 82 Minimum Flow Coeff. (kPas) 4 Minimum Shear Thinning 0.7 Crack Sealant BBR, T 368 40 34 28 22 16 10 4 Maximum Stiffness (MPa) 25 Minimum Avg. Creep Rate 0.31
23、 Crack Sealant DTT, T 369 40 34 28 22 16 10 4 Minimum Extendability (%) 85 85 70 55 40 25 10 Crack Sealant AT, T 370 40 34 28 22 16 10 4 Minimum Load (N) 50 aPavement temperatures are estimated from air temperatures using an algorithm contained in the LTPP Bind program or may be provided by the spec
24、ifying agency, or by following the procedures as outlined in M 323 and R 35. 2017 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-4e MP 25-6 AASHTO 6. SAMPLING 6.1. The hot-poured asphalt crack sealant mat
25、erial shall be sampled in accordance with R 66. 7. TEST METHODS 7.1. The properties outlined in Sections 5.3 and 5.4 shall be determined in accordance with T 366, T 367, T 368, T 369, T 370, T 371, TP 126, and ASTM D5167. 8. INSPECTION AND CERTIFICATION 8.1. Inspection and certification of the mater
26、ial shall be agreed on between the purchaser and the seller. Specific requirements shall be made part of the purchase contract. The seller shall provide material handling and storage procedures to the purchaser for each hot-poured asphalt crack sealant grade certified. 9. REJECTION AND RETESTING 9.1
27、. If the results of any test do not conform to the requirements of this specification, retesting to determine conformity is performed as indicated in the purchase order or as otherwise agreed on between the purchaser and the seller. 10. KEYWORDS 10.1. Aging; asphalt binder; direct tension; hot-poure
28、d asphalt crack sealant; modifier; performance specifications; rheology. 11. REFERENCES 11.1. Al-Qadi, I. L., E. H. Fini, H. D. Figueroa, J. F. Masson, and K. K. McGhee. Adhesion Testing Procedure for Hot-Poured Crack Sealants, Final Report. No. ICT-08-026. Illinois Center for Transportation, Rantou
29、l, IL, December 2008. https:/www.ideals.illinois.edu/bitstream/handle/2142/45986/ICT-08-026.pdf?sequence=2. 11.2. Al-Qadi, I. L., E. H. Fini, K. K. McGhee, and M. A. Elseifi. Development of Apparent Viscosity Test for Hot-Poured Crack Sealants, Final Report. No. ICT-08-027. Illinois Center for Trans
30、portation, Rantoul, IL, December 2008(b). https:/www.ideals.illinois.edu/bitstream/handle/2142/45987/ICT-08-027.pdf?sequence=2. 11.3. Al-Qadi, I. L., J. F. Masson, A. Loulizi, P. Collins, J. R. Woods, S. Bundalo-Perc, and K. K. McGhee. Long-Term Accelerated Aging and Low Temperature BBR Testing of S
31、ealants. Interim Report No. B5508-5. National Research Council of Canada, 2004, p. 262 11.4. Al-Qadi, I. L., J. F. Masson, E. Fini, S. H. Yang, and K. K. McGhee. Development of Performance-Based Guidelines for Selection of Bituminous-Based Hot-Poured Pavement Crack Sealant: An Executive Summary Repo
32、rt. VTRC 09-CR7. Virginia Transportation Research Council, Charlottesville, VA, 2009. http:/vtrc.virginiadot.org/PubDetails.aspx?PubNo=09-CR7. 2017 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-4e MP 25-
33、7 AASHTO 11.5. Al-Qadi, I. L., S. H. Yang, J. F. Masson, and K. K. McGhee. Characterization of Low Temperature Mechanical Properties of Crack Sealants Utilizing Direct Tension Test, Final Report. No. ICT-08-028. Illinois Center for Transportation, Rantoul, IL, December 2008. https:/www.ideals.illino
34、is.edu/bitstream/handle/2142/45988/ICT-08-028.pdf?sequence=2. 11.6. Al-Qadi, I. L., S. H. Yang, M. A. Elseifi, S. Dessouky, A. Loulizi, J. F. Masson, and K. K. McGhee. Characterization of Low Temperature Creep Properties of Crack Sealants Using Bending Beam Rheometry, Final Report. No. ICT-08-029. I
35、llinois Center for Transportation, Rantoul, IL, December 2008. https:/www.ideals.illinois.edu/bitstream/handle/2142/45989/ICT-08-029.pdf?sequence=2. 11.7. Collins, P., M. Veitch, J. F. Masson, and I. L. Al-Qadi. “Deformation and Tracking of Bituminous Sealants in Summer Temperatures: Pseudo-Field Be
36、havior.” International Journal of Pavement Engineering, Vol. 9, No. 1, 2008, pp. 18. 11.8. AASHTO PP 85, Grading or Verifying the Sealant Grade (SG) of a Hot-Poured Asphalt Crack Sealant. 1This provisional standard was first published in 2015. 2017 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.
