Department of Civil Engineering, University of Istanbul, Avcilar Campus, IstanbulTurkey.
Corresponding author, School of Civil Engineering, The University of Nottingham, NottinghamUK.
J Hazard Mater. 2014 Jan 15;264:403-10. doi: 10.1016/j.jhazmat.2013.11.040. Epub 2013 Nov 22.
The overall objective of this research project was to investigate the feasibility of incorporating 100% recycled aggregates, either waste precast concrete or waste asphalt planning, as replacements for virgin aggregates in structural concrete and to determine the mechanical and environmental performance of concrete containing these aggregates. Four different types of concrete mixtures were designed with the same total water cement ratio (w/c=0.74) either by using natural aggregate as reference or by totally replacing the natural aggregate with recycled material. Ground granulated blast furnace slag (GGBS) was used as a mineral addition (35%) in all mixtures. The test results showed that it is possible to obtain satisfactory performance for strength characteristics of concrete containing recycled aggregates, if these aggregates are sourced from old precast concrete. However, from the perspective of the mechanical properties, the test results indicated that concrete with RAP aggregate cannot be used for structural applications. In terms of leaching, the results also showed that the environmental behaviour of the recycled aggregate concrete is similar to that of the natural aggregate concrete.
本研究项目的总体目标是研究将 100%再生骨料（无论是废弃预制混凝土还是废弃沥青规划料）替代天然骨料用于结构混凝土的可行性，并确定含有这些骨料的混凝土的力学和环境性能。设计了四种不同类型的混凝土混合物，总水胶比（w/c=0.74）相同，一种以天然骨料为参考，另一种完全用再生材料替代天然骨料。所有混合物均使用磨细高炉矿渣（GGBS）作为矿物掺合料（35%）。试验结果表明，如果再生骨料来自旧的预制混凝土，则可以获得满足强度特性要求的再生骨料混凝土性能。然而，从力学性能的角度来看，试验结果表明，含有 RAP 骨料的混凝土不能用于结构应用。就浸出而言，结果还表明，再生骨料混凝土的环境行为与天然骨料混凝土相似。
