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A methodology for the mix design of earth bedding mortar

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Abstract

Earth masonry is a good alternative to more conventional materials in order to reduce the environmental impact of building materials. However earth construction techniques mostly rely on bricklayers’ experience, which is a hindrance to industrial development of this traditional know-how. This article proposes a methodology for the mix design of unstabilized earth bedding mortar based on mechanical criteria of the masonry and rheological criteria of fresh mortar. A test to characterize the shear strength of the masonry interface is specially investigated. The mechanical performances of the formulated mortar are then validated with laboratory scale characterization.

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Acknowledgements

The authors would like to thank C. Soula, and L. Delbreil from the LMDC (Toulouse) for their technical support in the experimental campaign. They also thank A. Marcom for his valuable advice and his experience as a bricklayer.

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Correspondence to Maïa Duriez.

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Duriez, M., Vieux-Champagne, F., Trad, R. et al. A methodology for the mix design of earth bedding mortar. Mater Struct 53, 16 (2020). https://doi.org/10.1617/s11527-020-1443-9

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Keywords

  • Earth masonry
  • Unstabilized earth mortar
  • Mechanical characterization
  • On site characterization