The rammed earth technique, an ancient construction method, offers great potential for modern applications in Bali. With its environmental friendliness, strength, and unique aesthetic, rammed earth can be a viable and sustainable option for contemporary buildings on the island.
An Ancient Technique with Modern Relevance
Rich History: Rammed earth has a long history, including notable structures like the Great Wall of China, showcasing its enduring strength and longevity. This technique connects Bali’s architectural heritage with modern construction practices.
Sustainable Material: Rammed earth construction utilizes locally sourced materials, aligning with Bali’s focus on sustainability and reducing embodied carbon. This reduces transportation and labor costs while minimizing environmental impact.
Unique Aesthetic: Rammed earth walls in Bali offer a distinct appearance with natural colors and textures, adding an organic touch to the island’s built environment. Each structure reflects Bali’s soil composition and embraces its local character.
The Process of Building with Rammed Earth
Wall Construction: Building with rammed earth involves creating a frame and filling it with a mixture of locally sourced soil, including clay, sand, gravel, and stabilizers. The soil is compressed layer by layer until a solid rammed earth wall is formed, representing a fusion of traditional and modern techniques.
Climate Considerations: Rammed earth construction in Bali requires an understanding of the local climate. It performs well in Bali’s humid climate with moderate temperatures. Additional insulation may be necessary to adapt to specific microclimates on the island.
Structural Enhancement: To increase the load-bearing capacity of rammed earth walls, the option of using cement as a stabilizer, known as Stabilized Rammed Earth (SRE), can be considered. However, it’s important to balance structural requirements with the sustainability goals of the project.
Benefits and Considerations of Rammed Earth Construction
Advantages of Rammed Earth
Aesthetic Appeal: Rammed earth walls in Bali offer visually striking appearances, reflecting the island’s natural colors and textures, creating a connection with the surrounding environment.
Local Material Sourcing: The use of locally sourced materials supports Bali’s sustainability goals by reducing carbon emissions associated with transportation and promoting the island’s natural resources.
Structural Integrity: Rammed earth walls exhibit high load-bearing capacity and can withstand wind and seismic conditions, providing a durable and stable structure suitable for Bali’s environment.
Thermal Performance: With proper insulation, rammed earth walls offer excellent thermal regulation, contributing to comfortable indoor temperatures in Bali’s tropical climate.
Fire Resistance: Rammed earth is classified as a non-combustible material, providing fire safety for buildings in Bali.
Sound Insulation: Rammed earth walls offer effective acoustic separation, reducing noise transmission and providing a peaceful environment within Bali’s buildings.
Considerations of Rammed Earth
Soil Suitability: Not all soils in Bali are suitable for rammed earth construction. Soil properties and suitability need to be carefully assessed to ensure optimal results.
Regulatory Challenges: Bali’s rammed earth construction may face regulatory challenges due to the lack of specific regulations and construction controls. Additional oversight during the building process may be required.
Time-Intensive Construction: Building with rammed earth in Bali requires a layered process and formwork, resulting in a more time-consuming construction compared to conventional methods. Adequate planning and scheduling are essential.
The Future of Rammed Earth Construction in Bali
Growing Interest: Bali’s construction industry is increasingly embracing sustainable practices, making low-carbon materials like rammed earth more popular.
Research and Development: Ongoing research and exploration of rammed earth’s properties in Bali are contributing to a better understanding and wider adoption of this construction technique.
Sustainable Architecture: Architects in Bali are incorporating rammed earth in their designs to create a more sustainable and environmentally friendly built environment on the island.
Rammed earth construction presents a sustainable and visually appealing option for buildings in Bali. By utilizing locally sourced materials and embracing Bali’s unique aesthetics, rammed earth walls can contribute to a more environmentally friendly and culturally connected built environment on the island. Despite the considerations and challenges, the growing interest and ongoing research in rammed earth construction suggest a promising future for this technique in Bali.