2017 Volume 15 Issue 3 Pages 110-125
We reported “Influence of Relative Mechanical Strengths between New and Old Cement Mortars on the Crack Propagation of Recycled Aggregate Concrete” in Journal of Advanced Concrete Technology, Vol. 15 (2017) No. 3 p. 110-125; doi: 10.3151/jact.15.110. After publication of the paper, we have become aware of the copyright violation from the original research. We therefore wished to retract the paper and apologize for any inconvenience caused by the retraction.