Research Information System
in: Recycled Materials in Civil and Environmental Engineering, Andrea Petrella,Michele Notarnicola, Editor, MDPI (Multidisciplinary Digital Publishing Institute), Basel, pp.85-97, 2022
This paper presents influence of treatment and mixing methods on recycled aggregate
concretes (RAC) designed regarding various techniques. Absolute Volume Method (AVM) according
to TS 802, Equivalent Mortar Volume Method (EMV), silica fume (SF) as a mineral addition were
considered in the design of concretes. In total, four groups of concretes were produced in the
laboratory: (1) natural aggregate concrete (NAC) designed with AVM as control concrete, (2) RAC
designed with AVM as control RAC, (3) RAC with SF as a mineral addition designed with AVM as
treated RAC and (4) RAC designed with EMV as treated RAC. The tests were performed at 28th
days and the statistical analysis were made on the test results. According to the results, EMV and SF
increased the compressive strength of concretes and this resulted an increase in the strength class of
concrete. A significant statistical difference between the concretes were determined. According to
multiple comparison analysis, it was found that especially there was a significant relationship among
NAC, RAC and RAC-EMV. In addition, it was recommended that EMV and AVM with 5% SF could
be used in the design of RAC rather than AVM only to achieve the target strength class C30/37.