5-05. Specification ST-15 Hot Mix Asphaltic Concrete.pdf

This document is a Purchase Specification (Specification No. ST-15) issued by the City of Amarillo, Texas for Hot-Mix Asphaltic Concrete (HMAC) to be used by the Amarillo Street Department for construction and repair of city streets. The specification covers the procurement of asphalt concrete, which shall be delivered to City trucks at the vendor's mixing plant, thoroughly mixed, heated to the required temperature, and ready for placement. The specification is valid for one year, with the potential for partial payments and periodic blanket purchase orders.

The document details specific requirements for the asphalt concrete, including conformance to Texas Department of Transportation (TXDOT) Standard Specifications. The vendor must perform monthly quality control testing, including screen analysis of aggregate and asphalt content determination, conducted by a Level II Specialist certified by TXDOT. The specification allows for the use of Recycled Asphalt Pavement (RAP) and Recycled Asphalt Shingles (RAS) with seasonal restrictions: up to 20% RAP during summer months (April-September) and up to 5% RAP during winter months (October-March). If the supplied HMAC does not meet specifications, the City reserves the right to purchase from an alternate vendor, with the original vendor responsible for demonstrating compliance through independent laboratory testing.