AASHTO M 140-16 pdf free download
AASHTO M 140-16 pdf free download.Emulsified Asphalt.
1. SCOPE
1.1. This specification covers 15 grades of emulsified asphalt for use in pavement construction in the manner designated.
Note 1—See M 208 for specifications covering cationic emulsified asphalt and M 316 for specifications covering polymer-modi fled emulsified asphalt.
1 .2. The values stated in SI units are to be regarded as the standard.
2. REFERENCED DOCUMENTS
AASHTO Standards:
• M 208, Cationic Emulsified Asphalt
• M 316, Polymer-Modified Emulsified Asphalt
• R 5, Selection and Use of Emulsified Asphalts
• R 66, Sampling Asphalt Materials
• R 77, Certifying Suppliers of Emulsified Asphalt
• T 49. Penetration of Bituminous Materials
• T 50, Float Test for Bituminous Materials
• T 51, Ductility of Asphalt Materials
• T 59, Emulsified Asphalts
• T 111. Mineral Matter or Ash in Asphalt Materials
REQUIREMENTS
Upon receipt, refer to T 59 for the proper protocol for conditioning the emulsified asphalt prior to mixing and testing. The emulsified asphalt should appear to be homogeneous after thorough mixing. Complete testing of sample for emulsified asphalt properties within 14 days of the sample date. Complete testing for emulsified asphalt residue properties within 30 days of the emulsified asphalt sample date.
Note 2—Dilution of the emulsified asphalt to aid in the field application of the material should not occur without approval of the buyer.
3.1 .1. If the emulsified asphalt appears to be inhomogeneous after reconditioning and mixing according to T 59, discard and resample for testing if required by the buyer.
Note 3—When emulsified asphalts (in particular, rapid-setting grades) are held in containers at ambient temperature for an extended period, emulsified asphalt droplets can coalesce, leading to unrepresentative changes in emulsified asphalt liquid properties. Coalescence can also lead to sieve development and, ultimately, destabilization of the emulsified asphalt. This can be noted as overall inhomogeneity of the sample even after careful reheating and mixing upon receipt.
3.1.2. If the sample was subjected to freeze-thaw cycling prior to receipt, discard and resample for testing. If the emulsified asphalt was frozen at any time before testing, results for emulsified asphalt liquid properties such as viscosity, sieve, and settlement will be invalid.
Note 4 —Emulsified asphalt residue properties can also be affected when the liquid emulsified asphalt to be recovered shows signs of inhomogeneity or has been subjected to freeze-thaw cycling.
Note 5—If the emulsified asphalt appears inhomogeneous or is suspected of having been subjected to freeze-thaw cycling prior to testing and a second, representative sample cannot be obtained, actual emulsified asphalt performance at time of construction should be reviewed. If sample integrity issues persist, consider deploying R 77 so that liquid emulsified asphalts samples are taken directly from heated storage tanks and are evaluated soon after cooling directly to the required test temperature.
3.2. Emulsified asphalt shall conform to the requirements in Table 1 for the type and grade specified.4. SAMPLING 4.1. Take samples of emulsified asphalt in accordance with R 66. 4.2. Store samples in clean, airtight, sealed plastic containers at a temperature of not less than 4°C (39F) until tested. 5. METHODS OF TEST 5.1. Determine the properties of the emulsified asphalts given in Table 1 in accordance with T 59. Determine the properties of the emulsified asphalt residue in accordance with T 49, T 50, T 51, or T 111 as appropriate. 6. KEYWORDS 6.1. Emulsified asphalt; medium-setting; rapid setting; slow-setting.AASHTO M 140-16 pdf download.
