The three most common types of HMA pavement are: Dense-graded HMA. Flexible pavement information in this Guide is generally concerned with dense-graded HMA. Dense-graded HMA is a versatile, all-around mix making it the most common and well-understood mix type in the U.S. Stone matrix asphalt (SMA). SMA.

Definition of HMA In simple terms…: A mixture of asphalt binder and graded mineral aggregate, mixed at an elevated temperature and compacted to form a relatively dense pavement layer (≈5% binder and ≈95% aggregate)

Feb 3, 2025 · Hot Mix Asphalt (HMA) is one of the most popular materials for paving roads, highways, parking lots, and driveways. As the name suggests, it’s a mixture of aggregates (such as sand, gravel, and crushed stone) combined with a binder known as bitumen .

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Stone matrix asphalt (SMA), sometimes called stone mastic asphalt, is a gap-graded HMA originally developed in Europe to maximize rutting resistance and durability. The mix design goal is to create stone-on-stone contact within the mixture.

May 6, 2024 · Hot mix asphalt, commonly abbreviated as HMA, is a blend of aggregate (stone, sand, or gravel) and liquid asphalt cement produced at high temperatures. This meticulously engineered mixture is the cornerstone of constructing …

Hot Mix Asphalt (HMA) is a combination of approximately 95% stone, sand, or gravel bound together by asphalt cement, a product of crude oil. Asphalt cement is heated aggregate, combined, and mixed with the aggregate at an HMA facility.

Hot-mix asphalt, or HMA, is a widely used material in road construction and pavement projects. It is the most common type of asphalt mix used for highways, parking lots, and various other applications where long-term durability is the main priority.

Hot mix asphalt is used when the outside air temperature is above 40 degrees, due to its propensity for rapid cooling. HMA can be classified into three categories, including dense-graded mixes, stone matrix asphalt and open grade mixes.

Jun 28, 2023 · As the most popular choice for paving residential roads and parking lots, hot mix asphalt (HMA) is the workhorse of the paving industry. But what exactly is HMA, and how does its composition impact its function?