ImageVerifierCode 换一换
格式:PDF , 页数:5 ,大小:48.06KB ,
资源ID:418381      下载积分:2000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-418381.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(AASHTO TP 108-2014 Standard Method of Test for Abrasion Loss of Asphalt Mixture Specimens.pdf)为本站会员(王申宇)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

AASHTO TP 108-2014 Standard Method of Test for Abrasion Loss of Asphalt Mixture Specimens.pdf

1、Standard Method of Test for Abrasion Loss of Asphalt Mixture Specimens AASHTO Designation: TP 108-141American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001 TS-2d TP 108-1 AASHTO Standard Method of Test for Abrasion Loss of A

2、sphalt Mixture Specimens AASHTO Designation: TP 108-1411. SCOPE 1.1. This test method describes the procedure for determining the percent abrasion loss of asphalt mixture specimens using the Los Angeles abrasion machine. 1.2. This standard may involve hazardous materials, operations, and equipment.

3、This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.3. The values stated in S

4、I units are to be regarded as the standard. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 231, Weighing Devices Used in the Testing of Materials PP 77, Materials Selection and Mixture Design of Permeable Friction Courses (PFC) R 30, Mixture Conditioning of Hot Mix Asphalt (HMA) R 35, Superpave Vo

5、lumetric Design for Asphalt Mixtures R 46, Designing Stone Matrix Asphalt (SMA) T 96, Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine T 168, Sampling Bituminous Paving Mixtures T 209, Theoretical Maximum Specific Gravity (Gmm) and Density of

6、 Hot Mix Asphalt (HMA) T 312, Preparing and Determining the Density of Asphalt Mixture Specimens by Means of the Superpave Gyratory Compactor 2.2. ASTM Standards: D7227/D7227M, Standard Practice for Rapid Drying of Compacted Asphalt Specimens Using Vacuum Drying Apparatus E1, Standard Specification

7、for ASTM Liquid-in-Glass Thermometers 2.3. Other Document: NCHRP Report 640, Construction and Maintenance Practices for Permeable Friction Courses 3. TERMINOLOGY 3.1. Definitions: 3.1.1. abrasion lossthe loss of mass from an asphalt mixture specimen due to abrasion. 2015 by the American Association

8、of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2d TP 108-2 AASHTO 3.1.2. air voidsthe total volume of the small pockets of air between the coated aggregate particles throughout a compacted paving mixture, expressed as a percent of t

9、he total volume of the compacted specimen. 3.1.3. draindownseparation of asphalt binder from the coarse aggregate structure, generally during storage or transportation. 3.1.4. stabilizing additivematerials used to minimize draindown of asphalt during transport and placement of SMA or PFC, which may

10、include fibers, polymers, crumb rubber, or a combination of these additives. 4. SUMMARY OF TEST METHOD 4.1. A single specimen of compacted asphalt mixture is placed within the drum of a Los Angeles abrasion machine without the charge of steel spheres. The specimen is subjected to a total of 300 revo

11、lutions within the Los Angeles abrasion drum. At the conclusion of the test, the percent material loss is determined based upon the original mass of the specimen. 5. SIGNIFICANCE AND USE 5.1. The test method described is used to indirectly assess the cohesion, bonding, and effects of traffic abrasio

12、n on asphalt mixtures. This procedure is typically used in the PFC mix design process. Test specimens may be either laboratory-compacted specimens or sampled from pavements. 6. APPARATUS 6.1. Los Angeles abrasion machineAs specified in T 96. 6.2. ThermometersArmored, glass, or dial-type with metal s

13、tems in accordance with ASTM E1. To measure the temperatures of the aggregates, binder, and PFC mixture, metal thermometers with a scale up to 200C (392F) and an accuracy of 3C (5F) or better shall be used. To measure the test temperature, a thermometer with a scale from 0C to 40C, (32F to 104F) and

14、 an accuracy of 0.5C (1F) shall be used. 6.3. Weighing DeviceThe weighing device shall have sufficient capacity, be readable to 0.1 percent of the sample mass or better, and conform to the requirements of M 231. 6.4. OvenThe oven shall be capable of maintaining the appropriate temperature for drying

15、 specimens to a constant mass. 6.5. ChamberEnclosure large enough to hold the Los Angeles machine with the ambient temperature controllable to a maximum margin of error of 1C (2F) from the specified test temperature. The thermometer measuring ambient temperature shall be in the proximity of the Los

16、Angeles machine. 7. TEST SPECIMENS 7.1. Test specimens may be either laboratory-compacted asphalt mixture or sampled from asphalt pavements. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2d TP 108-3

17、 AASHTO 7.2. Preparation of Laboratory-Compacted SpecimensPrepare a minimum of three specimens. The gyratory compaction effort shall be as specified by the mix design. Compacted specimen heights shall be 115 5 mm. 7.2.1. Preparation of Laboratory-Mixed SpecimensPrepare and condition the specimens in

18、 accordance with the appropriate mixture design procedure depending on the mixture type. 7.2.2. Preparation of Field-Sampled and Laboratory-Compacted SpecimensPrepare the specimens in accordance with T 312. 7.3. Preparation of Field-Sampled SpecimensObtain cores from the roadway in accordance with T

19、 168. 8. PROCEDURE 8.1. Dry the specimen to a constant mass at a temperature of 52 3C (125 5F). Samples saturated with water shall initially be dried overnight and then weighed at 2-h drying intervals. Recently compacted laboratory samples that have not yet been exposed to moisture do not require dr

20、ying. As an alternative to oven drying to constant mass, drying the sample according to ASTM D7227/D7227M is acceptable. When using ASTM D7227/D7227M to achieve constant mass, perform the drying procedure at least twice, with a mass determination after each drying cycle. 8.2. Cool the specimen to th

21、e test temperature of 25 1C (77 2F). Once the test temperature is reached, the specimen shall remain at this temperature for at least 4 h. Determine the mass of the specimen and record the value as W1. Note 1Test temperatures as low as 18C (64F) have been identified as having been used in recent res

22、earch (NCHRP 640). 8.3. Place the specimen inside the Los Angeles machine drum without the charge of steel spheres. Turn the drum at 30 to 33 r/min in accordance with T 96. The total number of revolutions shall be 300. 8.4. After 300 revolutions are complete, remove the specimen from the drum. Clean

23、 the specimen lightly with a cloth to remove particles that are loose on the outside of the specimen and discard the loose material. Determine the mass of the specimen and record the value as W2. 8.5. Repeat Steps 8.1 through 8.4 for the remaining specimens. 9. CALCULATION OF RESULTS 9.1. Calculate

24、the percent abrasion loss of each specimen as follows: 121001WWPLW= (1) where: W1 = initial mass of the specimen, g; and W2 = final mass of the specimen, g. 9.2. Calculate the mean abrasion loss of all specimens tested. Round the result to the nearest 1 percent. 10. REPORT 10.1. The report shall inc

25、lude the following: 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2d TP 108-4 AASHTO 10.1.1. Percent abrasion loss for each specimen, reported to the nearest 1 percent. 10.1.2. Mean percent abrasion

26、 loss of all specimens, reported to the nearest 1 percent. 11. PRECISION AND BIAS 11.1. PrecisionThe research required to develop precision values has not been conducted. 11.2. BiasThe research required to establish the bias of the method has not been conducted. 12. KEYWORDS 12.1. Abrasion loss; LA abrasion machine. 1This provisional standard was first published in 2014. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1