Properties of concrete containing construction and demolition wastes and fly ash
MetadataShow full item record
This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers.
This paper reports the properties of concrete containing recycled coarse aggregate (RCA) sources from local construction and demolition (C&D) wastes and fly ash (FA) sourced from Western Australia (WA). The RCA is used as 25, 50, 75, and 100% (by weight) replacement of natural coarse aggregate (NCA). In addition, the effect of 40% (by weight) class F fly ash as partial replacement of cement on the properties of recycled aggregate concrete is also evaluated. The properties of concrete evaluated are the compressive strength, indirect tensile strength, flexural strength, and water absorption. All properties are measured at 7, 28, 56, and 91 days. The results show that better compressive, tensile, and flexural strength of concrete containing 25% RCA as partial replacement of NCA can be obtained in recycled aggregate concrete. However, in the case of recycled aggregate concretes containing 40% fly ash, the compressive strength at later ages, such as at 56 and 91 days is increased but the indirect tensile and flexural strengths are decreased at all ages. It is observed that the water absorption is decreased as RCA content increased. It is also observed that the water absorption is decreased significantly in recycled aggregate concretes containing 40% fly ash at all ages.
Showing items related by title, author, creator and subject.
Mechanical properties of recycled aggregate concrete containing ternary blended cementitious materialsShaikh, Faiz (2017)This paper presents the effect of silica fume (SF) on early-age and long-term mechanical properties of recycled aggregate concrete containing slag. In this study six series of mixes are considered. The first series is ...
Shaikh, Faiz; Nguyen, H. (2013)The incorporation of mixed construction and demolition (C&D) wastes as a substitute to natural aggregates (NA) has many economic and environmental benefits. In this paper, the results of an investigation on the effect of ...
Ahmed, Shaikh (2014)This paper reports the properties of concrete containing recycled fine aggregate (RFA) and fly ash (FA) obtained from local source in Perth, Western Australia (WA). This study is consisted of two parts. In the first part, ...