The selection of a road roller primarily depends on factors such as material type, construction requirements, and environmental conditions. Below is a guide for choosing the appropriate roller based on different compaction materials:

1.  Asphalt Mixture (Asphalt Pavement)

Compaction Requirements: High density, smoothness, and prevention of aggregate breakage.
Recommended Rollers:

• Initial Compaction (High-Temperature Stage): Double-drum vibratory roller (high frequency, low amplitude to prevent material displacement).

• Intermediate Compaction (Medium-Temperature Stage): Pneumatic-tired roller (kneading action improves density).

• Final Compaction (Low-Temperature Stage): Static double-drum roller (eliminates wheel marks, enhances smoothness).
  Avoid: Impact rollers (may damage asphalt structure).

2. Sandy Soil, Gravel, Crushed Stone (Granular Materials)

Compaction Requirements: Deep compaction to improve load-bearing capacity.
Recommended Rollers:

• Sandy/Silty Soil: Vibratory roller (single or double drum, medium-to-high amplitude).

• Gravel/Crushed Stone:

• Small/medium particles: Vibratory roller (high-frequency vibration for particle interlocking).

• Large particles (e.g., rock fill): Impact roller (strong impact for deep compaction).
  Avoid: Pneumatic-tired rollers (may displace particles).

3. Cohesive Soil (Clay, Silt)

Compaction Requirements: Overcome cohesion, prevent "springy soil."
Recommended Rollers:

• Light Clay: Pneumatic-tired roller (kneading improves density).

• Heavy Clay: Sheepsfoot roller (protrusions break clumps for better compaction).

• High-Moisture Clay: Dry or mix with lime first, then use a vibratory roller.
  Avoid: High-frequency vibratory rollers (may cause soil liquefaction).

4. Stabilized Soil (Cement/Lime-Stabilized Soil)

Compaction Requirements: Uniform compaction to prevent cracking.
Recommended Rollers:

• Initial Compaction: Static roller (prevents material displacement).

• Intermediate Compaction: Vibratory roller (medium-low amplitude for density).

• Final Compaction: Pneumatic-tired roller (reduces cracks, improves surface quality).

5. Special Materials (Frozen Soil, Desert Sand, Landfill)

• Frozen Soil: Impact roller (breaks frozen layers for better compaction).

• Desert Sand: Vibratory roller + water sprinkling (increases interparticle friction).

• Landfill: Heavy vibratory or padfoot roller (enhances compression).

6. Narrow Areas (Trenches, Sidewalks)

Recommended Rollers:

• Walk-behind mini roller (1–3 tons).

• Plate compactor (for corners and edges).

Key Selection Factors

Conclusion

• Asphalt Pavement → Double-drum vibratory + pneumatic combination.

• Gravel/Stone Subgrade → Single-drum vibratory/impact roller.

• Cohesive Soil → Pneumatic/sheepsfoot roller.

• Narrow Areas → Walk-behind roller.

Choosing the right roller improves compaction quality, reduces costs, and extends equipment lifespan.