Geo Double Sand Method for Roads/Parking Lots [NETIS Registered]

We prevent liquefaction while reducing environmental impact. Suitable for narrow spaces! It's a fast, affordable, and strong construction method.

During an earthquake, the ground, which is normally stable due to the interlocking of water and sand particles, becomes unstable as this bond is disrupted. When pressure from above is applied in this state, the heavier sand particles settle, and the liquefied water tries to rise to the surface. This is the phenomenon of liquefaction, which has caused many disasters in past earthquakes. The Geo Double Sand Method prevents the underground water (excess pore water) from rising by blocking it with a waterproof sheet and directing it to drainage pipes for rapid drainage, thereby mitigating liquefaction and preventing ground subsidence. Additionally, in frost heave disasters, the waterproof sheet blocks and disperses moisture, suppressing damage to the road surface caused by moisture freezing and expanding (ice lenses). The reinforcement sheet used in the Geo Double Sand Method minimizes the expansion of the road surface and also prevents cracks in the pavement due to aging deterioration. The Geo Double Sand Method is a completely new construction method that has obtained a patent and certification from the Ministry of Land, Infrastructure, Transport and Tourism (NETIS). It requires no special technology, allows for low construction costs and shortened construction periods, and also enables partial repairs (patch repairs).

Civil Engineering Method