Flexural Testing of Reinforced Concrete Beams with Recycled Concrete Aggregates

摘要

The authors should be complimented for carrying out a thorough and a meticulous investigation of flexural behavior of reinforced concrete beams made with recycled concrete aggregates (RCAs). The discusser invites the authors to comment on the following issues: 1. The replacement levels of the coarse RCAs used by the authors are too closely spaced and, at the considered replacement levels variations in mechanical and structural properties, are unlikely to manifest themselves distinctly. 2. Only one stand-alone specimen has been tested by the authors for each parameter under investigation. Toward ensuring repeatability of results, it is desirable that at least two companion specimens should be tested and their results compared before arriving at any conclusion.