1. Brazilian Standard NBR 6459 – Soil: Determination of Liquid Limit,1984
2. Brazilian Standard NBR 7180– Soil: Determination of Plastic Limit,1984
3. Brazilian Standard NBR 9202 – Portland Cement and Other Materials in Powder: Determination of the Fineness through Sieve (325 Mesh),1985
4. Brazilian Standard NBR 10836 – Soil-Cement Bricks: Determination of Compressive Strength and Water Absorption,1994
5. Brazilian Standard NBR 10834 – Soil-Cement Bricks: Specifications,1994