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Asphalt Pavement Types. Common types of Asphalt pavement include hot mix asphalt (HMA), rubberized hot mix asphalt-gap graded (RHMA-G), and open graded friction course (OGFC). There are also two types of rubberized OGFC mixes: rubberized hot mix asphalt-open graded (RHMA-O) and RHMA-O-high-binder (RHMA-O-HB). The engineering design of Asphalt pavement structures is not an exact science.
To begin to understand why asphalt paving is superior to concrete paving (also called cement paving), one should know how asphalt and concrete are made. Concrete is made using aggregate (like crushed rock and sand), along with cement and water. The cement acts as the binder in concrete, holding the aggregate together.As the mixture dries, it forms a stiff, unforgiving solid that is prone to cracking and breaking, especially if the surface beneath it is not perfectly smooth. Like concrete, asphalt is made using aggregate.he cement acts as the binder in concrete, holding the aggregate together. As the mixture dries, it forms a stiff, unforgiving solid that is prone to cracking and breaking, especially if the surface beneath it is not perfectly smooth. Like concrete, asphalt is made using aggregate.