150 M. Velez
73.The Refractories Engineer, published by The Institute of Refractories Engineers (UK): http://
ireng.org/.
- Taikabutsu, published by the Technical Association of Refractories of Japan: http://www.
 tarj.org/.
Relevant ASTM standards
- ASTM C 39: Test Method for Compressive Strength of Cylindrical Concrete Specimens,
 February 2001.
- ASTM C 78: Test Method for Flexural Strength of Concrete, January 2002.
- ASTM C 157: Test Method for Length Change of Hardened Hydraulic-Cement Mortar and
 Concrete, July, 1999.
- ASTM C 231: Test Method for Air Content of Freshly Mixed Concrete by the Volumetric
 Method, March 2001.
- ASTM C 417: Standard Test Method for Thermal Conductivity of Unfired Monolithic
 Refractories, December 1993, Revised 1998.
- ASTM C860: Standard Practice for Determining the Consistency of Refractory Castable Using
 the Ball-in-Hand Test, April 2000.
