In Highway Construction engineering, the equipment HMA means -
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A.
Hard Mix Asphalt Plant
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B.
Hot Mix Asphalt Plant
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C.
Hot Mix Admixture
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D.
Hot Mix Aggregate Plant
Correct Answer:
B. Hot Mix Asphalt Plant
Explanation:
In highway construction, HMA stands for Hot Mix Asphalt. This material is a high-quality paving mixture consisting of approximately 95% mineral aggregates—such as stone, sand, and gravel—bound together by asphalt cement (bitumen). The term "Hot Mix" refers to the production process where both the aggregates and the asphalt binder are heated to high temperatures (typically above 300°F) at a specialized plant to ensure the components are thoroughly coated and workable for paving. Once mixed, the HMA is transported to the construction site, spread by a paving machine, and compacted by rollers to create a durable, smooth road surface.
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