Impact rollers are a unique type of compaction equipment, featuring high pressure, deep impact depth, and high construction efficiency. They can greatly meet the needs of foundation compaction for large-scale projects such as high-grade highways, high-speed railways, reservoir dams, airports, and ports, as well as the crushing and compaction of pavement surfaces during the upgrading of old roads. They can significantly enhance the bearing capacity, stability, and compactness of the road, reduce damage to the road caused by overloading vehicles, and extend the lifespan of the road. They have more special effects in compaction for the foundation of collapsible yellow soil and reinforcement, repair, and detection compaction of the formed subgrade of high-grade highways. They can significantly shorten the natural subsidence time of the subgrade, accelerate the construction progress, and shorten the construction period. They are called "insurance for road construction" by the owner units.
Comparison of compaction effects
The pressure strength is 10 times that of the static roller of the same tonnage and 3 to 4 times that of the vibratory roller of the same tonnage.
2. The compaction efficiency is 3 to 4 times that of the conventional vibratory rollers of the same tonnage.
3. The impact depth is 3 to 4 times that of the conventional vibratory rollers of the same tonnage.
4. The efficiency of the 5YCT30 type machine in crushing cement pavement is 50 times that of the impact crushing hammer.
HIGH ENERGY AND INCREASED COMPACTION LOADS
The contact pressures measured during impact during HEIC Compaction typically range between 350 kN/m²- 1,500 kN/m² dependent on material and soil conditions. This is far higher than typical future foundation and surface pressures from Infrastructure developments.
IMPACT SPACING & COVERAGE
The split mass configuration of the Landpac HEIC machines ensures 100% site surface coverage
WIDER RANGE OF MOISTURE CONTENT
Landpac HEIC has the ability to compact over a wider range of moisture content, particularly dry of OMC. This is possible due to the higher energy, when compared to that of conventional drum rollers.
INCREASED DEPTH OF INFLUENCE
Compaction energy is transferred in the form of a “rolling impact” (type of kneading effect) resulting in a relatively longer load duration, leading to a softer soil response to the load.