1980-06-30 Special Called Meeting

Browse Search

~- -- - The percent of wear on limestone rock asphalt ag~;rel;ate shall be no more than 40 as determined by Test P-letiiod Tex- .410-A and shall be made on that portion of the material re- tained on the ;10. 4 sieve having a naturally imprel;nated • asphalt con tent of less than 1 percent. ;Jo material shall be used before the source has been approved and the material has been sampled, tested and approved by the City. The Contractor shall notify the City in advance if~chanl;e in source of any material is desired, and both tl~e new source and material shall be approved by the City prior to use. Asphalt Alaterail y (a) Flux. .The fluxing material shall meet the Flux Oil req uirements~ of the Item, "Aspha 1 is , Oi 1 s and L•'muls ions" . _ ~ (b) Taclc Coat. The asphalt material for tack coat shall .'meet the requirements for emulsified asphalt, EA-11M, or cut- `back asphalt, RC-2. If RC-2 cut-back asphalt is used it may :.upon instruction from. the City, be diluted by the addition of~an .approved grade of gasoline and/or keroses, not to e}:ceed 15 percent by volum. Asphaltic materials'§l~all meet the require- -_rnents of the Item, "Asphalts, Oils and Emulsions". .,.330.3 Paving 1`lixtures . ,Types. The paving mixture shall consist of a uniform mixture of crushed limestone rock asphalt aggregate, flux, and water if . .needed. The grading shall be such as to produce, when properly proportioned, a mixture which, when tested in accordance with Test Method Tex-200-F, will conform to the limitations for grading given below for the type specified Prior to the application of the fluxing material to the limestone rock asnilalt agreeate. Tlie grading to be used in these mixtures, ~vithin~ the limits specified, shall be approximately as designated by -the City, and the mixture produced shall be uniform. ~ " T e "A" Pr~cent YP by jJeigh t Retained on 1" Sieve 0 Retained o.n 7/8" Sieve ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 0 to 2 Retained on 5/8" Sieve ~ ~ ~ 5 to 15 Retained on 3/8" Sieve .25 to 35 Retained on No. !{ Sieve. .50 to 60 Passing No. 10 Sieve .25 to 35 (1~~)