Geofoam, lightweight material as a solution to replace fill and fill in geotechnical construction.
Indonesia is a developing country with its infrastructure projects, such as roads, bridges, dams, etc. Soft subgrade conditions are a common cause of many problems in soft soil improvement, for example, soil stability and a very long duration of settlement.
This has led to innovations to support land improvement so that it becomes stable and can be built on it. With many innovations and experiments in soil improvement methods, it is not uncommon for many new products to support soil improvement.
One example is Styrofoam, this product comes from the United States known as EPS (Expanded Polystyrene). Styrofoam arises because there are environmental problems, this Styrofoam cannot be destroyed so that this Styrofoam waste will increase if it is not professionally processed or recycled.
In recent years, the use of Styrofoam has been very significant, one of which is as a substitute for the landfill for road construction, retaining walls, and soil elevation. In Indonesia, it is more popular with the term Geofoam, where the frequent use of Styrofoam panels is in geotechnical work or in civil works.
The use of Geofoam has been around 30 years ago, this material has become a trend when applied to the Geotechnical field. In the next few years, Geofoam is expected to replace some conventional geotechnical methods.
Advantages of Using Geofoam
There are many advantages of using this Geofoam, the main thing is that the weight of this material is 1/10 of the weight of landfill or 10%. Geofoam also reduces the burden that must be borne by the soil, which has a function to slow down the land settlement process and increase soil stability.
This Geofoam panel is very light so that it will not experience severe problems in logistics, work efficiency, and ease of installation and is easy to form, and is not disturbed by weather conditions.
Geofoam has good characteristics, including.
- Has very high strength (Excellent strength-to-weight Ratio).
- Comprehensive Strength value.
Geofoam's characteristics are suitable for heavy load construction purposes, such as road construction for heavy transport, pier access roads, toll roads, and so on.
Geofoam is good for application in airport runways because Geofoam has a long service life and cannot be degraded in the ground (Non-Biodegradable). The use of Geofoam on airport runways is considered time-saving, efficient, and cost-effective.
Geofoam made of EPS (Expanded-Polystyrene), is a material that is processed according to international technical test standards. Several technical test standards include ASTM D6817 for the compression strength category, while ASTM C578 for thermal performance.
Geofoam has been tested in several methods to increase soil strength, this light material mixed with soil will produce a mixed soil mass that has lighter weight. Geofoam has a compressive strength at a strain of 1% or an elastic area of 5.0 t / m² to 10.3 t / m². The compressive strength of the Geofoam is 11.5 t / m² to 24.1 t / m².
Geofoam Installation Method
Geofoam installation is relatively practical, it can be formed according to the placement area. This lightweight material can be moved anywhere easily, with or without heavy equipment. Geofoam size can be on-demand, Geofoam is placed in empty spaces vertically such as embankments without adding to the load on the subgrade.
By using Geofoam, it is very possible for the pile to work quickly. If the embankment used is ordinary soil, it needs to be compaction or compaction first.
This Geofoam has a size of 2.0 x 1.0 x 0.6 meters and doesn't need to be compressed anymore. Embankment work only needs to stack Geofoam according to working drawing design.
The work of installing Geofoam is not influenced by the weather because Geofoam does not absorb water and water will not affect changes in the compressive strength and flexural strength of the Geofoam. Geofoam can also function as a retaining wall, to withstand horizontal pressure loads. For more information, please contact us.