Recycled Sand, Strategic Input for Sustainable and Cost-Efficient Construction

By Anahita Jafari · June 29, 2025

Introduction

Sand is the second most extracted natural resource in the world after water. Today over 50 billion tons of sand and gravel are consumed globally each year. This demand is accelerating due to rapid urban expansion placing immense pressure on rivers, coastlines, and ecosystems.

At the same time, construction and demolition (C&D) waste accounts for 30 to 40 percent of global solid waste.

Alongside the rise of circular construction practices, there has been a significant initiative to recycle this waste into usable materials such as recycled sand, aggregates, and engineered soil. This shift, seen in Oman and across the GCC, is not only environmentally responsible but commercially strategic.

Where Recycled Materials Can Be Used

Recycled sand and engineered soil are already being applied in a wide range of projects, including:

• Backfilling for utilities, retaining walls, and building foundations
• Sub-base layers for roads, parking areas, and pedestrian paths
• Landscaping, embankments, and grading projects
• Non-fragile concrete products such as kerbstones, blocks, or non-structural panels

When properly washed and processed, recycled sand can perform within acceptable limits for many civil works. For example, well-graded recycled sand with low absorption rate may reduce compressive strength in concrete by less than approx. 15 percent, making it viable for a broad range of non-load-bearing and infrastructure-grade uses.

Advantages

Cost efficiency

The sites we visited in Oman confirm prices at least 30% lower than conventional materials (often more) while maintaining compliance and suitability for infrastructure and civil works, Which lowers the total cost per sq. metre.

Faster supply chains

These materials are already being produced locally and ready to supply.

Support for green certification

Recycled sand and engineered soil can contribute to LEED certification by earning points under categories such as Materials and Resources including recycled content, regional sourcing, and construction waste management as well as, in some cases, Sustainable Sites when used in landscaping or site restoration.

Lower environmental impact

Reduces extraction pressure on natural sand resources and helps limit embodied carbon.

Resilience to supply disruptions

With natural sand exports increasingly restricted and concentrated, recycled materials offer greater security and independence.

Commercial Opportunity

Recyclers, contractors, and developers all stand to benefit. C&D waste can be processed into compliant, market-grade materials with wide applications. With relatively little additional work, it can be upgraded into higher-value products such as engineered topsoil or premium fill broadening the range of end users and significantly increasing margins. Proven technologies are available, and the market is ready, particularly in regions facing tighter environmental regulation and limited natural resource access.

Strategic Alignment

This is no longer a niche experiment. It’s a scalable strategy aligned with resource security, cost reduction, and environmental compliance. What’s needed now is alignment between material producers, project specifiers, and procurement teams willing to standardize recycled input as a viable first choice.

Conclusion

Recycled sand and engineered soil are relevant, tested, and increasingly necessary components of modern construction. The infrastructure, production capability, and quality benchmarks already exist.

Now is the time for professionals across the value chain to treat these materials not as a compromise, but as a forward-looking solution commercially sound, environmentally essential, and strategically smart.

For more information about the materials, their properties, pricing, and logistics or for support in improving and upcycling soil into engineered or fertile topsoil feel free to get in touch.

Originally published on LinkedIn Articles on June 29, 2025. View the LinkedIn post.