The study assessed the durability of stabilized earth brick modified with Sawdust Ash (SDA) and
Terrasoil Nano chemicals (TNC). The study determined the geotechnical properties and the chemical
compositions of laterite. Physical properties of Saw Dust calcined at 600°C and resulting to SDA
were assessed using standard methods. Modified Laterite brick with varying proportions of SDA to
soil (0, 2, 4, 6, 8, and 10)% and TNC to soil (0, 2 and 5)% were used to make cube specimen of
150×150×150mm. The Compressive Strength (CS), Splitting Tensile Strength (STS), and Water
Absorption (WA) of modified bricks specimen were analysed. Two t-tests at 5% significance level
were used to determine the effect of SDA and TNC on properties of hardened lateritic bricks. The
particle size distribution (PSD) of the laterite samples showed a Coefficient of uniformity (Cu) of 3.20
and coefficient of curvature (Cc) of 1.2 with varying range of the geotechnical properties and
chemical compositions depending on the proportion SDA and TNC and amount of laterite. The CS,
STS and WA of the modified laterite bricks ranged from 1.12–2.32MPa, 0.22–0.62MPa and 19.5–
14.4%, respectively. The best mix of SDA and TNC was 8 and 5%, respectively. Stabilized earth bricks
modified with SDA and TNC exhibit improved performance over time. The modified laterite can be
used to produce interlocking blocks and kerbs in residential and commercial buildings.