SOIL IMPROVEMENT
Vibro Compaction, Vibro Replacement, Rapid Dynamic Compaction (RDC ), Dynamic Compaction (DC), Dynamic Replacement (DR), High Energy Compaction (HEIC), Rapid Impact Compaction (RIC), Controlled Modulus Column (CMC)
VIBRO COMPACTION
Vibrocompaction, established in 1936 in Germany, is one of the earliest and most effective dynamic deep compaction methods. This technique significantly enhances the compaction of non-cohesive soils, yielding superior results. The process involves densifying soil using deep vibration probes, either single or double, which are suspended from a crane. Soil densification is quantified by the settlement observed at the ground surface, while increases in bearing capacity are evaluated through zone load tests. Further assessment of soil property improvements is conducted using Cone Penetration Tests (CPT) before and after compaction.
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During vibrocompaction, points are strategically chosen in either triangular or square patterns to comprehensively improve the targeted area. The process utilizes a cylindrical vibrator that oscillates horizontally, typically suspended from a crane. These vibrators, ranging from 15–40 kN in weight, 30–50 cm in diameter, and 2–5 m in length, reach the desired depth through extension tubes. These tubes also house supply pipes for water and, optionally, air to assist the ground penetration process. The resulting settlement from this compaction can vary from 5% to 15% of the compaction depth, depending on the initial soil density and the desired level of compaction. Detailed technical descriptions and further information on vibrocompaction can be found in specialized literature.
VIBROREPLACEMENT AND STONE COLUMNS
Vibrocompaction, established in 1936 in Germany, is one of the earliest and most effective dynamic deep compaction methods. This technique significantly enhances the compaction of non-cohesive soils, yielding superior results. The process involves densifying soil using deep vibration probes, either single or double, which are suspended from a crane. Soil densification is quantified by the settlement observed at the ground surface, while increases in bearing capacity are evaluated through zone load tests. Further assessment of soil property improvements is conducted using Cone Penetration Tests (CPT) before and after compaction. ​
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APCC excels in Vibrocompaction and Vibroreplacement, boasting over 50 probes and skilled personnel capable of improving vast areas without outsourcing. Notably, APCC handled ground improvements for significant projects like Ba Al Ghaiylam Development, A'Sharq - Oman, Palm Deira, Palm Jebel Ali and several other project across Middle East.
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Vibroreplacement is an advanced method building upon Vibrocompaction, involving the insertion of crushed stone or coarse graded materials into holes created by Vibrocompaction probes. Once the vibrator is removed, the resulting cavity is filled with coarse material and compacted using repetitive vibrations. This technique, known as the conventional dry method, strengthens weak natural soils and man-made fills, particularly beneficial for housing and low-rise buildings.