What are potential consequences of poor compaction in highway construction?

Answer: B — Structural failure and increased maintenance costs

In highway construction, achieving proper compaction is essential for the longevity and durability of the roadway. When compaction is inadequate, it can lead to structural failures and increased maintenance costs. The pavement may settle or shift, resulting in uneven surfaces that can contribute to cracking and deformation. Poorly compacted layers may not adequately support the weight of vehicles, leading to a reduction in the overall structural integrity of the road. This can necessitate more frequent repairs and maintenance, translating to higher costs over time as the integrity of the road surface declines. The consequences of poor compaction can also manifest in various ways, such as potholes forming more quickly or rutting occurring, all of which further compromise safety and durability. Therefore, the emphasis on proper compaction during construction is critical to prevent these issues and ensure that the roadway remains safe and serviceable for its expected life span.