TY - GEN
T1 - Experimental study of sustainable recycled concrete aggregates in steel-concrete composite construction
AU - Tan, Ee Loon
AU - Tam, Vivian
AU - Tao, Zhong
AU - Singh, Balbir
PY - 2015
Y1 - 2015
N2 - The use of recycled concrete aggregates is a sustainable alternative for natural aggregates. It reduces concrete waste produced in construction and demolition. Since there has been limited research on the use of recycled concrete aggregates in steel-concrete composite construction and various standards such as Australian Standard AS 2327.1 [1] and Eurocode 4 [2] do not provide specifications for the use of recycled concrete aggregates in composite steel-concrete construction. Therefore, this paper investigates the integration of recycled concrete using sustainable recycled concrete aggregates in composite steel-concrete beam structure. This paper presents an experimental study on the ultimate load behaviour of composite steel-concrete beams. A total of fifteen composite steel-concrete beams with different concrete mix comprised of various percentage of recycled aggregates (0%, 30%, 50%, 70% and 100%) and water to cement content ratio (0.35, 0.45 and 0.55) were tested. Each beam was simply supported at the ends and was subjected to applied load at mid-span. From the experimental study, it was found that the 0.35 and 0.45 water to cement ratio achieved higher ultimate load capacity than 0.55. The optimal replacement percentage of recycled concrete aggregates was 70% with the highest ultimate load capacity. Furthermore, there was no significant reduction in strength when recycled concrete aggregate was used to replace the natural aggregate in the concrete mix for composite steel-concrete beams.
AB - The use of recycled concrete aggregates is a sustainable alternative for natural aggregates. It reduces concrete waste produced in construction and demolition. Since there has been limited research on the use of recycled concrete aggregates in steel-concrete composite construction and various standards such as Australian Standard AS 2327.1 [1] and Eurocode 4 [2] do not provide specifications for the use of recycled concrete aggregates in composite steel-concrete construction. Therefore, this paper investigates the integration of recycled concrete using sustainable recycled concrete aggregates in composite steel-concrete beam structure. This paper presents an experimental study on the ultimate load behaviour of composite steel-concrete beams. A total of fifteen composite steel-concrete beams with different concrete mix comprised of various percentage of recycled aggregates (0%, 30%, 50%, 70% and 100%) and water to cement content ratio (0.35, 0.45 and 0.55) were tested. Each beam was simply supported at the ends and was subjected to applied load at mid-span. From the experimental study, it was found that the 0.35 and 0.45 water to cement ratio achieved higher ultimate load capacity than 0.55. The optimal replacement percentage of recycled concrete aggregates was 70% with the highest ultimate load capacity. Furthermore, there was no significant reduction in strength when recycled concrete aggregate was used to replace the natural aggregate in the concrete mix for composite steel-concrete beams.
KW - aggregates (building material)
KW - concrete
KW - concrete construction
KW - recycling (waste, etc.)
UR - http://handle.uws.edu.au:8081/1959.7/uws:31251
UR - http://icass2015.ist.utl.pt/
M3 - Conference Paper
BT - Proceedings of the Eighth International Conference on Advances in Steel Structures, 21-24 July 2015, Lisbon, Portugal
PB - World Scientific
T2 - International Conference on Advances in Steel Structures
Y2 - 21 July 2015
ER -
