Abstract
The purpose of our investigation is to develop a new recycled mud wall and a new light weight mud wall which is made by mixing by-product clay and charcoal coated by ceramic skin. The by-product clay is produced as waste matter when slaked lime is extracted from limestone. The ceramic charcoal is produced by burning wood chips mixed with bentonite, which are made of lumber from thinning or scrap wood. The proposal of these new mud walls will contribute to efficient use of natural resources and to the economical design of wooden houses.