14-PaDot Section - 409.pdf

This document is a technical specification section (Section 409) from a transportation department's standard specifications, focusing on Superpave mixture design, standard and RPS (Routine Produced Structural) construction of plant-mixed hot mix asphalt (HMA) courses. The document provides comprehensive technical requirements for asphalt mixture production, including detailed guidelines for materials selection, mixture composition, quality control, testing procedures, placement techniques, and acceptance criteria for various types of asphalt wearing and binder courses.

The specification covers critical technical aspects such as acceptable aggregate and bituminous material compositions, gradation tolerances, temperature requirements, and density acceptance standards. It establishes precise protocols for mixture design, including requirements for virgin and recycled materials, testing frequencies, and quality control measures. The document includes multiple tables specifying exact tolerances for asphalt content, gradation, mat density, and other key performance indicators, with corresponding payment adjustment factors based on how closely the produced mixture meets the specified standards. The specification applies to both standard construction and RPS construction projects, providing a comprehensive framework for ensuring consistent, high-quality asphalt pavement construction.