Recycled Aggregate Concrete Made with Silica Fume: Experimental Investigation

H. Younis, Khaleel (2020) Recycled Aggregate Concrete Made with Silica Fume: Experimental Investigation. Civil Engineering and Architecture, 8 (5). pp. 1136-1143. ISSN 23321091

[img] Text (Research Article)
CEA40-14817476.pdf - Published Version

Download (330kB)
Official URL:


This research deals with the behavior of recycled aggregate concrete (RAC). In this study an experimental work was undertaken. The study examines the effect of using recycled coarse aggregate (RCA) on the workability and the mechanical performance of RAC. The influences of using silica fume (SF) as cement replacement material on the performance of RAC were also examined. Silica fume was used at four contents (5%, 10%, 15% and 20%). The total number of mixes was six. Four mixes of RAC made with these four contents of SF, one RAC mix was made without SF and one mix was made with natural coarse aggregate (NCA) as a reference mix. The outcomes of this study reveal that workability and mechanical performance of RAC are lower than that made with NCA. Also, Silica fume has an adverse influence on workability of the RAC. However, the silica fume possesses a positive influence on mechanical properties of RAC. Silica fume can be used at contents of (10-20)% of cement mass to obtain mechanical performance for the RAC comparable to the concrete includes NCA.

Item Type: Article
Uncontrolled Keywords: Recycled Coarse Aggregate, Compressive Strength, Flexural Strength, Silica Fume
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Depositing User: ePrints deposit
Date Deposited: 08 Mar 2021 07:28
Last Modified: 08 Mar 2021 07:28

Actions (login required)

View Item View Item