Repair Mass Parking Apron III, Minot AFB, ND

**AM_0001 posted 24 January 2020: Amendment makes various spec and drawing changes related to bidder inquiries, updates wage rates and provides the site visit attendance list.  This Amendment does not extend the response date.**

This is a Fully-Designed Project. Project will include the following: Remove approximately 23,143 Square Yards of PCC pavement varying in thickness between 15 inches and 18 inches and replace with approximately 23,210 SY of 18-inch PCC pavement. New PCC pavement shall conform to 32 13 11 CONCRETE PAVEMENT FOR AIRFIELDS AND OTHER HEAVY-DUTY PAVEMENTS with very stringent fine and coarse aggregate deleterious materials limits unique to military airfield pavement construction, weather severity classification of severe, enforcement of evaluation and testing for Alkali-Silica Reactivity per UFGS 32 13 11 requirements for both fine and coarse aggregates, Air Force durability requirement that aggregate shall have a satisfactory service record in freezing and thawing of at least 5 years successful service in three concrete paving projects or aggregate with durability factor of 50 or more when subjected to freezing and thawing of specimens prepared in accordance with ASTM C 1646/C 1646M and tested in accordance with ASTM C 666/C 666M, Procedure A for aggregates not having a satisfactory demonstrable service record. Removal of approximately 2,560 Square Yards of 2-inch hot-mix asphalt pavement, 929 square yards of 6.5-inch hot-mix asphalt and replacing with 2,470 SY of 2-inch hot-mix asphalt pavement and 925 SY of 6.5-inch hot-mix asphalt pavement conforming to UFGS 32 12 15.13 HOT-MIX ASPHALT AIRFIELD PAVING; Associated work includes the installation of preformed and poured joint sealant; removal & replacement of cathodic protection test pits; pavement marking; seeding and minor grading.