The difference between double drum roller and vibratory roller

Twin-drum rollers and vibratory rollers are common road construction machines that play an important role in compacting land and laying roads. The main difference between them is the working principle and compaction effect.
A twin-drum roller is a static roller that compacts land or roads using its own weight. Its main feature is that it has two parallel rollers that roll in the front-to-back direction and exert pressure on the land through gravity. This type of roller is suitable for compacting harder soil or solid road surfaces and can provide higher compaction effects.
A vibratory roller is a dynamic roller that compacts land or roads by vibrating the drum and its own weight. Its drum usually has a vibration function, which vibrates the soil particles through vibration force, thereby improving the compaction effect. Vibratory rollers are suitable for softer soil or roads that require better compaction.
Double-drum rollers mainly rely on their own weight for compaction and are suitable for harder soil or road surfaces, while vibratory rollers use vibrating drums to improve the compaction effect and are suitable for softer soils or pavements that require better compaction effects. The choice of which roller to use depends on specific construction needs and land conditions.