GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Rammed Earth Soil Suitability

user-7108812 | Posted in Green Building Techniques on


I have two soil samples both of them have 30% gravel when tested by wet sieving. When sieved with 4mm mesh, the small size gravel was 17.5 % (for both the samples). One sample has very little clay that forms weak thread and a small ribbon with difficulty. I have made test blocks with 5% cement and I plan to test the compressive strength in a lab.

I would like to know if I need more clay and, if the compressive strength works out, is it OK to build with the soil?

Thank you.

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.


  1. GBA Editor
    Martin Holladay | | #1

    I have no experience with rammed earth construction, so I can't answer your question.

    Here are some links with relevant information, however:

    Rammed Earth Compressive Testing

    Rammed Earth Construction Basics

    Rammed earth

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |