TY  - SER
AU  - Chen, Xiaoguang
AU  - Sierens, Zeger
AU  - Gruyaert, Elke
AU  - Li, Jiabin
TI  - Precast Concrete Wall Panels Incorporating Mixed Recycled Aggregates
SN  - 0889-325x
KW  - Aesthetic Characteristics
KW  - Architectural Precast Concrete
KW  - Mechanical Property
KW  - Mixed Recycled Aggregate (MRA)
KW  - Natural Carbonation
N2  - Mixed recycled aggregate (MRA) is considered a sustainable construction material, and its use in precast concrete is currently banned due to its poor engineering performance. This paper aims to evaluate the feasibility of partial replacement of natural coarse aggregate with MRA in self-consolidating concrete (SCC) for manufacturing architectural precast concrete sandwich wall panels. To this end, five MRAs from recycling plants were characterized, out of which two were selected to develop SCC. SCC mixtures with three replacement levels and three water compensation degrees were produced, and their physical, mechanical, durability, and aesthetic properties were examined. The results showed that the incorporation of MRA dominated the mechanical properties of SCC, while the water compensation degree primarily affected the flowability and carbonation resistance. The presence of MRA had no considerable effect on the aesthetic characteristics. Up to 10% MRA in weight of total aggregates could be used in precast SCC
UR  - DOI:10.14359/51737333
ER  -