Rollers are used to compact materials like sand or asphalt. Several roller types are used in the asphalt-laying process, each with its own compaction factor. If too heavy a roller is used too early in the process, the asphalt won’t compact properly and fail to hold together. By starting with a relatively wide, lightweight roller and gradually moving to heavier rollers, you can achieve the compaction you’re looking for, step by step. Evenness and compaction are two of the most important aspects to bear in mind when laying asphalt roadways.
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