1. http://www.ussartf.org/world_trade_center_disaster.htm.
2. Concrete high temperature: material properties and mathematical models;Bazant,1996
3. Microstructures of fire damage concrete;Lin;ACI Mater J,1996
4. Concrete petrografy;St. John,1998
5. Lea’s chemistry of cement and concrete;Hewlett,1998