#### AGGREGATE BLENDING FOR ASPHALT MIX DESIGN: BAILEY METHOD

What is asphalt mixture design?

#### Aggregate Blending for Asphalt Mix Design: Bailey Method ...

Aggregate Blending for Asphalt Mix Design: Bailey Method William R. Vavrik, William J. Pine, and Samuel H. Carpenter Transportation Research Record 2002 1789 : 1 , 146-153

#### What is the Bailey Method? - University of Idaho

aggregate blend that defines: • Coarse Aggregate (CA) – The largest particles that create voids in the mix. • and • Fine Aggregate (FA) – The smaller particles that fill the voids created by the Coarse Aggregate ASPHALT INSTITUTE WWW.ASPHALTINSTITUTE.ORG Bailey Method Mix Types • The Bailey Method defines the mix type by volume of CA in the

#### Bailey Method | Asphalt Institute

The Bailey method was originally developed by Robert D. Bailey of the Illinois Department of Transportation in the early 1980s. It is a practical tool that has been successfully utilized for developing and analyzing hot asphalt mixes in the lab and field. The Bailey method provides a good starting point for mix design and an invaluable aid when making adjustments at the plant to improve air voids, VMA and the overall workability of the mix, whether you are using Marshall or Superpave.

#### Understanding the Bailey Method | Asphalt magazine

The Bailey Method of gradation evaluation focuses on the aggregate properties that affect the way aggregates fit together (or pack) in a confined space or volume (See Figure 1). To analyze the packing factors, the method defines four key principles that break down the overall combined aggregate blend into four distinct fractions (See Figure 2).

#### The Bailey Method - il-asphalt.org

Developing the Combined Blend 1. Determine Mix Type & NMPS 2. Chose the VOLUME of CA 3. Blend the CA’s by VOLUME 4. Blend the FA’s by VOLUME 5. Chose the desired % Minus 0.075mm Convert the Individual aggregate %’s from VOLUME to weight

#### DESIGN OF HOT MIX ASPHALT USING BAILEY METHOD OF GRADATION

Bailey method is a systematic approach in blending aggregates that provides aggregate interlocking as backbone of the structure and develop strong aggregate skeleton for rut resistance and durability. The Bailey method allows the designer to select an aggregate skeleton that will be more resistant to permanent deformation and to

#### THE BAILEY METHOD OF GRADATION EVALUATION : A TOOL FOR MIX ...

This article focuses on the Bailey Method, a tool for understanding aggregate packing and how it relates to compactability and segregation susceptibility. This method of gradation evaluation can help define coarse and fine in an aggregate blend, break the blend into narrow size ranges, and look at particle distribution within each range.

#### Mix Design - Blending Aggregates - YouTube

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#### TRANSPORTATION RESEARCH CIRCULAR

The Bailey Method is a means to design the aggregate interlock and aggregate structure in an asphalt mixture. The principles in the method can be used from the asphalt mix design through the quality control process, but are not a mix design method. The method does not

#### Chapter 3 - Aggregate Sampling, Testing, and Quality ...

For asphalt concrete mixes, the Bailey method can be used to ensure conformance of blended aggregate mix to required quality. The Bailey method is a method for mix design that ensures the aggregate interlock and optimum packing (controlled by changing the fine aggregate coarse fraction ratio and the fine aggregate fine fraction ratio), to meet ...

#### Designing mixes for top performance | Asphalt magazine

The mix design process uses a series of lab procedures to select an appropriate blend of aggregate sources and sizes and determine the type and amount of asphalt binder. It should be recognized that a mix design is just the starting point for achieving the desired asphalt pavement performance.

#### AGGREGATE BLENDING, ABSORPTION, & SPECIFIC GRAVITY

Aggregate Blending, Absorption & Specific Gravity 24 100 0.075 .3 2.36 4.75 9.5 12.5 19.0 Percent Passing control points max density line max size nom max size Sieve Size (mm) Raised to 0.45 Power Design Aggregate Structure Superpave Aggregate Gradation

#### Marshall Mix Design - Pavement Interactive

The Marshall method, like other mix design methods, uses several trial aggregate-asphalt binder blends (typically 5 blends with 3 samples each for a total of 15 specimens), each with a different asphalt binder content. Then, by evaluating each trial blend’s performance, an optimum asphalt binder content can be selected.