1. ABNT – Brazilian Association of Technical Standards, 1991. NBR 12142: Concrete – Determination of traction strength in flexion – Method of test. Rio de Janeiro, p. 4 (In Portuguese).
2. ABNT – Brazilian Association of Technical Standards, 1994. NBR 7222: Mortar and concrete – Determination of the tension strength of cylindrical specimens submitted to diametrical compression – Method of test. Rio de Janeiro, p. 3 (In Portuguese).
3. ABNT – Brazilian Association of Technical Standards, 2003, NBR NM 30: Fine aggregate – Test method for water absorption. Rio de Janeiro, p. 3 (In Portuguese).
4. ABNT – Brazilian Association of Technical Standards, 2003. NBR NM 248: Aggregates – Sieve analysis of fine and coarse aggregates. Rio de Janeiro, p. 6 (In Portuguese).
5. ABNT – Brazilian Association of Technical Standards, 2003. NBR NM 46: Aggregates – Determination of material finer than 75 um sieve by washing. Rio de Janeiro, p. 6 (In Portuguese).