Compilación de normas ASTM. En Caja de Apuntes de Construcciones
C 39-96. Standard test method for compressive strenght of cylindrical concrete specimens. C 79-94. Standard test method for flexural strenght of concrete [using simple beam with third-point loading]. C 293-94. Standard test method for flexural stenght pf concrete [using simple beam with center-point loading]. C 496-96. Standard test method for spittling tensile strenght of cylindrical concrete specimens.