Data on optimum recycle aggregate content in production of new structural concrete

This data presented herein are the research summary of “mechanical behavior and durability performance of concrete containing recycled concrete aggregate” (Paul, 2011) [1]. The results reported in this article relate to an important parameter of optimum content of recycle concrete aggregate (RCA) in production of new concrete for both structural and non-structural applications. For the purpose of the research various types of physical, mechanical and durability tests are performed for concrete made with different percentages of RCA. Therefore, this data set can be a great help of the readers to understand the mechanism of RCA in relates to the concrete properties.


a b s t r a c t
This data presented herein are the research summary of "mechanical behavior and durability performance of concrete containing recycled concrete aggregate" (Paul, 2011) [1]. The results reported in this article relate to an important parameter of optimum content of recycle concrete aggregate (RCA) in production of new concrete for both structural and non-structural applications. For the purpose of the research various types of physical, mechanical and durability tests are performed for concrete made with different percentages of RCA. Therefore, this data set can be a great help of the readers to understand the mechanism of RCA in relates to the concrete properties. &

Value of the data
The influence of replacement of recycle concrete aggregate in production of new structural concrete is discussed here This data set can also be used as a guideline for others to scrutinize the properties of recycle concrete aggregate The research data presented herein may be useful to manufacture different commercial elements using recycle concrete aggregate This data set may also encourage to recycle other wastes to minimize the dependency on natural resources

Data
This dataset reported herein were obtained from the experimental studies conducted on the different percentages of recycle concrete aggregate (RCA) replacement in the concrete mix and relate them to the influence of physical, mechanical and durability properties. The detailed of the dataset can also be found in [1][2][3]. Additionally, the available data presented by other researchers [4][5][6] were used to check the applicability of RCA in new concrete. A large number of cubes and cylinders (about 300) were prepared to examine the aforementioned properties of RCA. Finally, the properties of concrete made from RCA were compared with a reference concrete made with 100% natural aggregates (NA).

Experimental design, materials, and methods
The materials compositions for different RCA mixes used in the research are shown in Table 1. The RCA was collected from the different sources of construction and demolition waste (C&DW) sites in the Western Cape region of South Africa. Concrete was then made by replacing different percentages (0%, 15%, 30%, 50% and 100%) of NA by RCA as they are assigned RCA0 to RCA100 in Table 1.    The physical properties of aggregates such as relative density of aggregates, aggregate crushing value, flakiness index, and water absorption capacity were also measured and presented in Table 2. All mixing was performed under laboratory conditions. Slump test to check the workability of the concretes was performed as per SANS 5862:2006 [7], and air content as per SANS 6252:2006 [8]. After pouring concrete into the moulds, a vibration table was also used to ensure the compatibility of the fresh concrete. The compressive and splitting tensile strength of hardened concrete was determined on 100 mm and 150 mm cube specimens according to SANS 5863:2006 [9] and SANS 6253:2006 [10], respectively. Cylindrical specimens, 300 mm height × 150 mm diameter were used for evaluating the   static E-modulus of RCA concrete in compression as per ASTM C469 [11]. The durability of concrete was investigated by means of chloride conductivity, water sorptivity and oxygen permeability index test according to the guideline provided in [12,13]. Figs. 1-9 show the results when different percentages of RCAs were replaced with NA in production of new concrete. Furthermore, based on available data on RCA concrete the results were compared and details are discussed in [1,2].

Acknowledgments
The author appreciates the assistance of Mr Immelman who conducted some part of the laboratory work of this research. Additionally, author is also thankful to Professor Gideon van Zijl for his guidance throughout the research project.

Funding
This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

Transparency document. Supporting information
Transparency data associated with this article can be found in the online version at https://doi.org/ 10.1016/j.dib.2017.11.012.