AASHTO M81-92-2017

免费
Carl 2024-09-22 31 845.21KB 3 页 免费
侵权投诉
Standard Specification for
Cutback Asphalt
(Rapid-Curing Type)
AASHTO Designation: M 81-92 (2017)
Technical Subcommittee: 2a, Emulsified Asphalts
Release: Group 3 (July)
American Association of State Highway and Transportation Officials
555 12th Street NW, Suite 1000
Washington, DC 20004
TS-2a M 81-1 AASHTO
Standard Specification for
Cutback Asphalt (Rapid-Curing Type)
AASHTO Designation: M 81-92 (2017)
Technical Subcommittee: 2a, Emulsified Asphalts
Release: Group 3 (July)
1. SCOPE
1.1. This specification covers liquid petroleum products, produced by fluxing an asphalt base
with suitable petroleum distillates, to be used in the treatment of road surfaces.
1.2. The values stated in SI units are to be regarded as the standard.
2. GENERAL REQUIREMENTS
2.1. The cutback asphalt shall show no separation or curdling prior to use and shall not foam when
heated to the application temperature.
3. PROPERTIES
3.1. Cutback asphalt of the grade designated shall conform to the requirements shown in Table 1.
4. METHODS OF SAMPLING AND TESTING
4.1. Sampling and testing cutback asphalt (rapid-curing type) shall be in accordance with the following
AASHTO and ASTM standards:
R 66, Sampling Asphalt Materials
T 44, Solubility of Bituminous Materials
T 49, Penetration of Bituminous Materials
T 51, Ductility of Asphalt Materials
T 72, Saybolt Viscosity
T 78, Distillation of Cutback Asphalt Products
T 79, Flash Point with Tag Open-Cup Apparatus for Use with Material Having a Flash Point
Less Than 93°C (200°F)
T 102, Spot Test of Asphaltic Materials
T 201, Kinematic Viscosity of Asphalts (Bitumens)
T 202, Viscosity of Asphalts by Vacuum Capillary Viscometer
ASTM D95, Standard Test Method for Water in Petroleum Products and Bituminous
Materials by Distillation
© 2020 by the American Association of State Highway and Transportation Officials.
All rights reserved. Duplication is a violation of applicable law.
TS-2a M 81-2 AASHTO
Table 1—Minimum and Maximum Cutback Asphalt Grade Requirements
RC-70
RC-250
RC-800
RC-3000
Min
Min
Min
Min
Kinematic viscosity at 60 C (140 F),
mm2/sa
70
250
800
3000
Flash point (tag open-cup), C ( F)
—
27 (80)
27 (80)
27(80)
Water, %
—
—
—
—
Distillation test:
Distillation, percentage by volume of total
distillate to 360 C (680 F)
to 190 C (374 F)
10
—
—
—
to 225 C (437 F)
50
35
15
—
to 260 C (500 F)
70
60
45
25
to 315 C (600 F)
85
80
75
70
Residue from distillation to 360 C (680 F),
volume percentage of sample by difference
55
65
75
80
Tests on residue from distillation:
Absolute viscosity at 60 C (140 F),
60
60
60
60
Pa•s (P)b
(600)
(600)
(600)
(600)
Ductility, 5 cm/min at 25 C (77 F), cm
100
100
100
100
Solubility in trichloroethylene, %
99.0
99.0
99.0
99.0
Spot test
c
with:
Standard naphtha
Negative for all grades
Naphtha-xylene solvent, % xylene
Negative for all grades
Heptane-xylene solvent, % xylene
Negative for all grades
a As an alternate, Saybolt Furol viscosities may be specified as follows:
Grade RC-70–Furol viscosity at 50°C (122°F)—60 to 120 s
Grade RC-250–Furol viscosity at 60°C (140°F)—125 to 250 s
Grade RC-800–Furol viscosity at 82 2°C (180°F)—100 to 200 s
Grade RC-3000–Furol viscosity at 82 2°C (180°F)—300 to 600 s
b In lieu of viscosity of the residue, the specifying agency, at its option, can specify penetration at 100 g, 5 s at 25°C (77°F) of 80 to 120 for Grades RC-70,
RC-250, RC-800, and RC-3000 However, in no case will both viscosity and penetration be required
c The use of the spot test is optional When specified, indicate whether the standard naphtha solvent, naphtha-xylene solvent, or heptane-xylene solvent will be
used in determining compliance with the requirement, and also, in the case of the xylene solvents, the percentage of xylene to be used
5. KEYWORDS
5.1. Cutback asphalt; rapid curing.
© 2020 by the American Association of State Highway and Transportation Officials.
All rights reserved. Duplication is a violation of applicable law.
摘要：

AASHTO M81-92-2017 是由美国国家公路与运输协会（AASHTO）发布的关于碳素钢和无合金钢无缝钢管及电阻焊钢管的标准规范。该标准首次发布于1992年，并于2017年进行了最新确认，主要适用于桥梁、公路及交通基础设施中的结构用钢管。文档详细规定了钢管的化学成分、力学性能、尺寸公差、试验方法及验收标准，确保其在严苛工程环境下的安全性与耐久性。对于从事道路工程、钢结构设计及材料采购的专业人士而言，AASHTO M81-92-2017是确保项目符合美国联邦与州级规范、提升工程质量与合规性

展开>> 收起<<
AASHTO M81-92-2017.pdf

共3页,预览3页

还剩页未读， 继续阅读

声明：本文档系会员上传，若文档所含内容侵犯了您的版权或隐私，请立即通知，我们立即给予侵权申诉删除！

相关推荐

更多
立即下载
作者：Carl 分类：国外协会 价格：免费 属性：3 页 大小：845.21KB 格式：PDF 时间：2024-09-22

开通VIP享超值会员特权

  • 多端同步记录
  • 高速下载文档
  • 免费文档工具
  • 分享文档赚钱
  • 每日登录抽奖
  • 优质衍生服务

相关内容

更多

热门标签

ISO 混凝土 技术规范 检验 航空航天 不锈钢 消防 压力容器 铝合金 法兰
/ 3
评分 收藏
分享
立即下载
客服
关注