Sawdust Concrete

• Here is the mix he used: one part of cement, one part of diatomaceous earth, three parts of sawdust, three parts of shavings, and one part of clay . . . all volume measurements. Since sawdust-concrete has a higher absorption rate than straight concrete, Friberg added one part of clay to the mix. - from https://www.motherearthnews.com/green-homes/building-a-sawdust-concrete-home-zmaz78jfzgoe