Variability in Compression Strength of Rammed Earth Walls

Rammed earth buildings are a crucial component of global cultural heritage. The conservation of these structures requires a detailed understanding of their structural behavior. This study investigates the compressive strength in different regions of a rammed earth prototype, constructed according to historical techniques and materials. During construction, rigorous control of moisture and compaction methodology was maintained. Samples were collected on the same day, ensuring that the integrity of compaction, internal structure, and adjacent components were not compromised. The results revealed significant variability in compressive strength, with no apparent correlation to the location of the samples. Variations in environmental moisture and incomplete homogeneity of layer compaction do not explain these discrepancies. This initial study indicates the need for further research to elucidate the factors contributing to this variability, representing a crucial step towards understanding and preserving rammed earth structures.