Mechanical Effect of Steel Fiber on the Cement Replacement Materials of Self-Compacting Concrete

Fibers

Fahed Alrshoudi¹  Abdulaziz Alaskar¹  Hisham Alabduljabbar²  Rayed Alyousef²  Abdeliazim Mustafa Mohamed²  Ahmed Fathi³ 

[1] Department of Civil Engineering, College of Engineering, King Saud University, Riyadh 11362, Saudi Arabia;Department of Civil Engineering, College of Engineering, Prince Sattam bin Abdulaziz University, Al-kharj 11942, Saudi Arabia;Department of Civil Engineering, College of Engineering, University of BISHA, Bisha 61922, Saudi Arabia;

关键词: self-compacting concrete;    steel fiber;    cement materials;    microwave-incinerated rice husk ash;   

DOI  :  10.3390/fib7040036

来源: DOAJ

【 摘 要 】

The behaviors of the fresh and mechanical properties of self-compacting concrete (SCC) are different from those of normal concrete mix. Previous research has investigated the benefits of this concrete mix by incorporating different constituent materials. The current research aims to develop a steel fiber reinforcement (SFR)‒SCC mixture and to study the effectiveness of different cement replacement materials (CRMs) on the fresh and mechanical properties of the SFR‒SCC mixtures. CRMs have been used to replace cement content, and the use of different water/cement ratios may lower the cost of CRMs, which include microwave-incinerated rice husk ash, silica fume, and fly ash. Fresh behavior, such as flow and filling ability and capacity segregation, was examined by a special test in SCC on the basis of their specifications. Moreover, compressive and splitting tensile strength tests were determined to simulate the hardened behavior for the concrete specimens. Experimental findings showed that, the V-funnel and L-box were within the accepted range for SCC. Tensile and flexural strength increases upon the use of 10% silica fume were found when compared with other groups; the ideal percentage of steel fiber that should be combined in this hybrid was 2% of the total weight of the binder. Overall, steel fibers generated a heightened compressive and splitting tensile strength in the self-compacting concrete mixes.

【 授权许可】

Unknown