Asphalt treated base (ATB) is a dense-graded (but more permeable) HMA with a wide gradation band and lower asphalt content intended for use as a stabilizing base course and intended to be used in conjunction with a top/ wear course of street/ highway grade HMA (typically 1/2 inch or 3/8 inch HMA as currently defined by Washington state DOT ...

Asphalt concrete base (ACB), also called asphalt treated base (ATB), is a dense-graded HMA with a larger nominal maximum aggregate size (1 inch) intended for use as a base course or binder course (see Figure 1). In addition to site paving benefits, ACB can be advantageous because it can provide:

Asphalt Treated Base (ATB) is dense-graded HMA with a wide gradation band and lower asphalt content intended for use as a base course.

Asphalt Treated Base (ATB) Asphalt treated base (ATB) is a dense-graded (but more permeable) HMA with a wide gradation band and lower asphalt content intended for use as a stabilizing base course and intended to be used in conjunction with a top/ wear course of...

Combination of surface course and base course placed on a subgrade to support the traffic load and distribute it to the roadbed. The primary structural difference between a rigid and flexible pavement is the manner in which each type of pavement distributes traffic …

Asphalt concrete base (ACB) is a dense-graded HMA with a larger nominal maximum aggregate size (1 inch) intended for use as a base course or binder course (see Figure 1). The term "Asphalt Concrete Base" is used in this manual to describe both HDOT's Hot Mix Asphalt Base Course (HMAB Course) and the County Asphalt Treated Base (ATB) mixtures.

The Asphalt Treated Base (ATB) shall be composed of a mixture of aggregate, hydrated lime, blending sand if required, and asphalt binder. The several aggregate fractions shall be sized, uniformly graded, and combined in such proportions that the resulting composite blend meets gradation requirements as designated. 320.2.2 Asphalt Binder

Asphalt Treated Base (ATB). Dense-graded HMA primarily used for binder courses and HMA base courses . The nominal maximum aggregate size is 1 inch and compacted lift thicknesses should be between 2.5 and 4 inches.

Apr 26, 2012 · Asphalt treated base (ATB) materials have shown good road performance. There are some differences in the mix design methods used for ATB and Asphalt Concrete (AC) and this paper investigates four different design methods for ATB.

1.1 Use this test procedure to design a mixture of asphalt treated base (ATB) in accordance with the Department’s 2014 Standard Specification Item 292, “Asphalt Treatment (Plant-Mixed)” to determine the target asphalt content.