Existence of dividing strength in concrete containing recycled coarse aggregate
Access Status
Authors
Date
2013Type
Metadata
Show full item recordCitation
Source Title
ISSN
Collection
Abstract
Concrete is a composite material consisting of mortar and coarse aggregates. The use of recycled aggregates in concrete is increasing gradually. Recycled coarse aggregates are highly porous and often contain micro-cracks and weak interfacial transition zone (ITZ). Therefore, the recycled aggregates are weaker than natural coarse aggregate and their modulus of elasticity (E) is expected to be lower than that of natural coarse aggregate. This paper examines and presents the existence of dividing strength in concrete containing recycled coarse aggregate. In this study 192 concrete cylinders (100Φ x 200 mm) and 192 mortar cubes (50 x 50 x 50 mm) were cast and tested at 28 days for compressive strengths of natural aggregate concretes (NAC) and recycled aggregate concretes (RAC). In the case of NAC, linear relationship between the compressive strength of concrete and that of mortar is observed. However, in the case of RAC, a distinct two-stage relationship between concrete strength and mortar strength is observed indicating the existence of dividing strength of recycled aggregate concrete. This paper emphasized that more research need to be conducted in the existence of RAC as the properties of recycled coarse aggregates very quiet substantially depending upon the contents.
Related items
Showing items related by title, author, creator and subject.
-
Shaikh, Faiz (2018)This paper presents the effect of recycled coarse aggregate (RCA) of 50% and 100% by wt. on compressive strength and elastic modulus of concrete at elevated temperatures of 600 and 800 °C. The residual compressive strengths ...
-
Shaikh, Faiz; Chavda, V.; Minhaj, N.; Arel, H. (2018)The effect of presoaking of recycled coarse aggregate (RCA) in nano silica (NS) solution on the properties of recycled aggregates concrete is compared with the direct mixing of NS in concrete. In this study, four series ...
-
Mistri, Abhijit; Dhami, Navdeep ; Bhattacharyya, S.K.; Barai, S.V.; Mukherjee, Abhijit (2022)Reutilisation of the construction and demolition (C&D) wastes as aggregate in concrete is a vital step towards sustainability as it prevents depletion of natural resources as well as alleviates wastes. However, the attached ...