A variety of earth bricks with different compositions of cohesive soil, cement, gypsum and fibre were used in the tests. The dosing of different materials was controlled by the dry weight. The amount of soil, cement, gypsum and fibre of a given mixture were placed in a mechanical mixer and dry blended for circa 20 min until the different materials were homogeneously combined. Afterwards, water was sprayed over the mixture until 24% moisture content level was achieved. The materials were again blended using an electric