1. Brazilian Association of the Ornamental Stone Industry;ABIROCHAS;World Scenario. Geól. Cid Chiodi Filho,2018
2. NBR 6459-84, Soil: Determination of the Liquidity Limit;ABNT,1984
3. NBR 7180-84, Soil - Determination of the Plasticity Limit;Abnt,1984
4. NBR 15270-1: Ceramic Components. Part 1: Ceramic blocks for sealing masonry - Terminology and requirements. Rio de Janeiro;ABNT,2005
5. NBR 15270-2: Ceramic Components. Part 2: Ceramic blocks for structural masonry - Terminology and requirements. Rio de Janeiro;ABNT,2005