02640.10 1135 Section 02640 - Shoulder Aggregate
Description
02640.00Scope - This Section includes t he requirements for shoulder Aggregate
Materials
02640.10Aggregate :
determined according to AASHTO T 27. Uniformly grade the Aggregates from coarse to fine. The Aggregates shall conform to one of the grading requirements of Table 02640- 1 as identified in the Special Provisions or indicated b y the Pay Item in the Contract Schedule of Items.
Table 02640-1 Grading Requirements - Shoulder Aggregates Separated Sizes 1" - 0 3/4" - 0 Sieve Size Percent Passing (by Weight)
1 1/2" 100 1" 90 - 100 100 3/4" – 90 - 100 1/4" 40 - 55 40 - 60
AASHTO T 335. Provide at least one fractured face based on the following percentage of particles retained on the 1/4 inch sieve for the designated size:
Minimum Percent of Fractured Particles (by Weight of Material)
Designated Size Retained on 1/4" Sieve
1 1/2" - 0 and larger 50 Smaller than 1 1/2" - 0 50
Test Test Met hod Requirements
Abrasion AASHTO T 96 35.0% maximum Degradation ( Coarse Aggregate) Passing No. 20 sieve ODOT TM 208 30.0% maximum Sediment Height ODOT TM 208 3.0" maximum
have a Sand equivalent of not less than 25.