A study of the effects of recycled steel fibers on the compressive and flexural strength of recycled concrete

• Main Authors: Tadeo, Faith Marie Grace D.C., Geronimo, Juan Miguel R., Paras, Leandro Maria C.
• Format: text
• Language: English
• Published: Animo Repository 2002
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/11630
• Institution: De La Salle University

This research is a study on the effects on recycled steel fibers to the flexure and compressive strength of recycled aggregate concrete. In this study, recycled aggregates from crushed virgin concrete and steel fibers in the form of scrap deformed slit sheets were used in the production of recycled aggregate concrete. The researchers made 4 batches of specimens: (1) Recycled Aggregate Concrete or RC, (2) Recycled Aggregate Concrete with 1% fiber volume or RC1, (3) Recycled Concrete with 3% fiber volume or RC3, and (4) Recycled Concrete with 5% fiber volume or RC5. Results indicated that recycled concrete aggregates were more porous than the virgin concrete aggregates. Results also illustrated that virgin concrete was more workable than recycled concrete. In terms of the compressive strength, recycled concrete was higher compared to fiber-reinforced recycled concrete containing 1% and 3% fiber volume, while the sample containing 5% fiber volume was higher than the virgin concrete. In terms of flexural strength, both recycled concrete and virgin concrete were higher than the fiber reinforced recycled concrete. As for the behavior of the fiber reinforced recycled concrete alone, its flexural and compressive strength increased when the fiber volume was increased.