EPS GEOFOAM (LIGHTWEIGHT MATERIAL): THE KEY TO UNLOCKING THE SAND SCARCITY BOTTLENECK IN MEKONG DELTA EXPRESSWAYS

The Chau Doc - Can Tho - Soc Trang Expressway is a key national infrastructure project driving socio-economic growth in the Mekong Delta. However, the biggest hurdle threatening the project’s timeline is the acute shortage of embankment materials, particularly leveling sand.

The Real-World Challenge: Severe Shortage of Over 3 Million m³ of Preloading Sand

According to recent data published by VnExpress, Phase 1 of the Chau Doc - Can Tho - Soc Trang Expressway is facing severe delay risks due to a massive deficit in sand and stone supplies. Specifically:

• Critical Supply Deficit: The total sand demand for the three sub-projects running through Can Tho amounts to over 16.6 million m³, but the volume delivered to the site has reached less than 10.6 million m³.

• Unallocated Sources: The sub-projects are still short of about 4 million m³ of sand, with 3 million m³ currently lacking any identified source of supply.

• The Crucial Surcharge Deadline: To achieve the technical traffic opening by next year, sites must secure 3.44 million m³ of sand ahead of the preloading deadline. As local river sand mines restrict capacity or halt operations to prevent riverbank erosion, hitting this milestone using traditional methods is becoming highly improbable.

Alternative options, such as utilizing marine sand or purchasing commercial sand, inevitably lead to complex cost overruns (estimated at hundreds of billions of VND) alongside technical and environmental risks.

EPS Geofoam – The Smart Alternative Solution from Okasan Livic

To address the severe sand shortage and the notoriously soft soil conditions inherent to the Mekong Delta, Okasan Livic Vietnam offers a proven, advanced technology utilized globally: EPS (Expanded Polystyrene) Geofoam Lightweight Blocks.

Shifting the engineering mindset from "sourcing sand" to "substituting fill material" with EPS Geofoam delivers exceptional value to overcome current expressway challenges:

1. Complete Independence from Sand Supplies

Utilizing EPS Geofoam blocks for road embankments replaces the vast majority of traditional sand fill volume. Contractors no longer depend on river mine extraction capacities or bureaucratic licensing delays, completely eliminating the risk of construction standstills caused by material shortages.

2. Radical Load Reduction – Eliminating Surcharge Waiting Time

• The unit weight of EPS Geofoam is exceptionally light—approximately only 1% of the weight of traditional soil or sand.

• By replacing heavy sand fill with EPS, the stress imposed on the underlying soft ground is drastically minimized. Consequently, projects can bypass or significantly shorten the months-long consolidation and preloading phase, solving the intense schedule pressure currently weighing on contractors.

3. Accelerated Construction Speed

Okasan Livic’s EPS blocks are manufactured to standard modular dimensions. Their ultra-lightweight nature allows for quick, manual handling and interlocking installation without requiring heavy machinery. The blocks are securely stacked over a thin sand-leveling course and protected by a geomembrane, forming a highly stable, durable road base foundation.

4. Eco-Friendly and Tailored for the Mekong Delta Ecosystem

Minimizing the demand for river sand directly protects natural water flows and mitigates riverbank erosion across Mekong Delta provinces—the exact reason many local mines have been forced to suspend operations. Furthermore, EPS is chemically inert, ensuring zero contamination of groundwater in flood-prone regions.

Solution Comparison Matrix

Conclusion

The "sand thirst" gripping Western expressways is more than a supply chain crisis; it is an urgent call for the infrastructure industry to transition to sustainable, innovative materials. EPS Geofoam by Okasan Livic stands out as the ultimate answer: optimizing construction timelines, ensuring structural integrity over soft soil, and safeguarding the environment of the Mekong Delta.

Okasan Livic Vietnam is committed to partnering with project owners and contractors, bringing leading Japanese engineering solutions to help vital national projects reach the finish line on tim