The effect of recycled concrete aggregate properties on the bond strength between RCA concrete and steel reinforcement

Journal Article · Sat Oct 15 04:00:00 EDT 2011 · Cement and Concrete Research

DOI:https://doi.org/10.1016/j.cemconres.2011.06.004· OSTI ID:21576897

Butler, L; West, J S; Tighe, S L

The purpose of this study was to investigate the influence that replacing natural coarse aggregate with recycled concrete aggregate (RCA) has on concrete bond strength with reinforcing steel. Two sources of RCA were used along with one natural aggregate source. Numerous aggregate properties were measured for all aggregate sources. Two types of concrete mixture proportions were developed replacing 100% of the natural aggregate with RCA. The first type maintained the same water-cement ratios while the second type was designed to achieve the same compressive strengths. Beam-end specimens were tested to determine the relative bond strength of RCA and natural aggregate concrete. On average, natural aggregate concrete specimens had bond strengths that were 9 to 19% higher than the equivalent RCA specimens. Bond strength and the aggregate crushing value seemed to correlate well for all concrete types.

• OSTI ID: 21576897
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 10 Vol. 41; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
BUILDING MATERIALS
CEMENTS
COMMINUTION
COMPRESSION STRENGTH
CONCRETES
CRUSHING
DISPERSIONS
HYDROGEN COMPOUNDS
MATERIALS
MECHANICAL PROPERTIES
MIXTURES
OXYGEN COMPOUNDS
WATER