Mineral Addition and Mixing Methods Effect on Recycled Aggregate Concrete


Dilbas H., Güneş M. Ş.

in: Recycled Materials in Civil and Environmental Engineering, Andrea Petrella,Michele Notarnicola, Editor, MDPI (Multidisciplinary Digital Publishing Institute), Basel, pp.85-97, 2022

  • Publication Type: Book Chapter / Chapter Research Book
  • Publication Date: 2022
  • Publisher: MDPI (Multidisciplinary Digital Publishing Institute)
  • City: Basel
  • Page Numbers: pp.85-97
  • Editors: Andrea Petrella,Michele Notarnicola, Editor
  • Van Yüzüncü Yıl University Affiliated: Yes

Abstract

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.