Dynapac Road Compaction Engineering, Verified on the Density Bench.

Vibration test rigs · asphalt mat density lab · drum fatigue tunnel · Tier 4 emissions chamber — where Dynapac proves rollers before contractors pave.

We will not publish a compaction-meter curve we cannot reproduce on our asphalt density bench under controlled mat temperature. — Chief Compaction Engineer, Dynapac

Founded in 1998, Dynapac ships roughly 2,800 compaction units each year from a 120,000 m² plant footprint to paving contractors in 55 countries. Operating weight classes, drum diameter families and vibration frequency maps are frozen after eccentric-shaft fatigue and ISO 4406 hydraulic cleanliness gates clear — a discipline that keeps night-overlay crews from chasing density with blind extra passes.

Lab Facilities Behind Every Dynapac Roller Release

Six instrumented spaces where vibration frequency, hydraulic cleanliness and emissions claims are stress-tested before serial production.

Hydraulic vibration test rig for roller drums

Hydraulic vibration & pressure rig

450 LPM capable circuit with ISO 4406 cleanliness lab sampling for amplitude control valves.

Drum fatigue tunnel for vibratory rollers

Drum fatigue tunnel

Cyclic-load endurance baseline exceeding 1.2M vibration cycles on eccentric shaft assemblies.

ROPS FOPS cab drop test lab

ROPS / FOPS drop-pin lab

ISO 3471 / ISO 3449 cab certification for tandem and soil compactor operator stations.

Tier 4 emissions test chamber

Tier 4 Final emissions chamber

ISO 8178 C1 cycle NOx + PM analyzers tied to paving duty maps for municipal compliance packs.

Asphalt mat density laboratory

Asphalt mat density lab

Compaction-meter values cross-checked against cores under controlled binder temperature profiles.

Track and tire wear evaluation lane

Tire & scraper wear lane

Controlled abrasive run-in for pneumatic tire rollers and scraper bars used on hot mix.

Publications From Dynapac Compaction R&D

Downloadable outlines for EOR reviewers and paving supervisors evaluating density-control claims.

Tour the Compaction R&D Center

Visits require a scheduled appointment for fleet engineers and EOR teams — NDA recommended when reviewing unpublished density maps.