Slurry Infiltrated Fiber Concrete as Sustainable Solution for Defected Buildings

Abstract

Abstract- One of the new concrete technology applications that had toget increased importance as repairing and retrofitting technique isslurry infiltrated fiber concrete (SIFCON). This research aims toinvestigate some of the mechanical properties of SIFCON and its rolein improving the useful life of normal concrete. The research consistsof two parts; in the first part, three mixes are prepared with 0%, 1.5%,and 6% volume fraction steel fiber content. Compressive strength,flexural strength, total absorption and apparent density tests are madefor each mix. In the second part, a composite section of normalconcrete and SIFCON mix with 6% steel fiber is prepared. Differentthicknesses of SIFCON layer had been casted to assess its benefits inrepair and/or to strengthen of defected buildings. Flexural strength,toughness, ductility and load-deflection curve are examined for thecomposite sections. The results showed that the flexural strength ofSIFCON with 6% steel fiber content increased up to 600% and 200%compering to those recorded with the reference mix and 1.5% steelfiber concrete respectively. The results also indicated that the increaseof SIFCON layer thickness would improve the mechanical properties ofthe composite section. Also, the maximum increase in flexural strengthwas greater than four times the reference mix. Better behavior is alsorecorded in load deflection and toughness of SIFCON compositesection.