Bond behaviour in rubberised concrete filled circular steel tubes
by Abdulrahman Khaleel Midhin; Abu Bakar Nabilah; Noor Azline Mohd. Nasir; Nor Azizi Safiee
International Journal of Structural Engineering (IJSTRUCTE), Vol. 10, No. 4, 2020

Abstract: Rubberised concrete filled steel tube (CFST) is a potential method to utilise the crumb rubber as partial replacement of aggregate, however previous researches show weaker interfacial bond between the rubber and concrete. The aim of this research is to investigate the bond behaviour between the steel tube and the concrete in CFST. Push-out and mechanical tests were conducted on circular specimens, and the variables were: 1) different thicknesses of steel tube; 2) concrete types (normal, rubberised concrete and presence of metakaolin as pozzolan). The results indicated that the use of rubber gives adverse effect on the compressive and splitting tensile strengths, and the modulus of elasticity. However, the use of metakaolin as cement replacement improves its mechanical properties. Based on push-out test, the rubberised concrete shows lower bond strength, and the bond strength increases with increasing section thickness. The presence of metakaolin yielded higher bond strength compared with other mixes.

Online publication date: Mon, 03-Aug-2020

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Structural Engineering (IJSTRUCTE):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?


Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com