FHWA Improving HMA Performance with Superpave® A A S H T O F H W A. INDUSTRY. SUPERPAVE 2005. Federal Highway Administration
HMA S0.375– Can be used for leveling of deteriorated and raveled surfaces, milled surfaces, or repaired concrete surfaces. Ideal as a surface course for most local roads and many secondary roadways with speed limits less than 50 mph. Hot Mix Asphalt Hot mix asphalt may be referred to by several names. In different sections of the state it may also be referred to as bituminous concrete, hot plant mix, asphalt concrete, blacktop or Superpave. Hot mix asphalt is composed of aggregate bound together into a solid mass by asphalt cement. The aggregates total […] “Superpave” is an overarching term for the results of the asphalt research portion of the 1987 – 1993 Strategic Highway Research Program (SHRP). Superpave consists of (1) an asphalt binder specification, (2) an HMA mix design method and (3) HMA tests and performance prediction models. How Superpave Works An asphalt pavement has two basic components: aggregates to carry the load and asphalt cement to bind the aggregates together. Superpave provides pavement engineers with a rational method for selecting materials and designing the asphalt concrete mix. Incorrectly designed HMA can manifest different stresses. 5. SIGNIFICANCE AND USE 5.1. The procedure described in this practice is used to produce HMA that satisfies Superpave HMA volumetric mix design requirements. 6. PREPARING AGGREGATE TRIAL BLEND GRADATIONS 6.1. Select a binder in accordance with the requirements of M 323. 6.2. Determine the specific gravity of the binder according to T 228.
What Is Superpave?
高性能沥青路面(Superpave)基础参考手册_文档下载
Superpave is a system which is inclusive of all these parts. Superpave mixture design provides for a functional selection, blending, and volumetric analysis of proposed materials, along with an evaluation of moisture sensitivity.
5. SIGNIFICANCE AND USE 5.1. The procedure described in this practice is used to produce HMA that satisfies Superpave HMA volumetric mix design requirements. 6. PREPARING AGGREGATE TRIAL BLEND GRADATIONS 6.1. Select a binder in accordance with the requirements of M 323. 6.2. Determine the specific gravity of the binder according to T 228. Superpave mix design is based on (1) properties of the asphalt binder and aggregate and (2) volumetric properties of hot mix asphalt (HMA). The characteristics of the densification curve obtained during Gyratory compaction of (HMA) are believed to be related to the strength of the aggregate skeleton [Anderson et al. (2002)]. Superpave is a system which is inclusive of all these parts. Superpave mixture design provides for a functional selection, blending, and volumetric analysis of proposed materials, along with an evaluation of moisture sensitivity. hot-mix asphalt (HMA) tonnage placed in Washington State each year, the percentage of Superpave has increased from approximately 2% in 1997 up to approximately 47% in 2002.