HIGHLY EFFICIENT PCE SUPERPLASTICIZER AS SOLUTION FOR CONCRETE MIXTURES WITH HIGH CONTENT OF RECYCLED AGGREGATE

Author(s): Violeta Bokan Bosiljkov, David Antolinc
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 1
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN:978-2-35158-199-5
e-ISBN:978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 447-452
Total Pages: 6
Language : English

Abstract: The paper deals with the influence of recycled aggregate, gained by crushing hardened concrete that was previously used in construction, on the properties of concrete mixture in fresh and hardened state. Selective demolition of the RC structure was used to produce concrete rubbles. As reference concrete mixture, ordinary concrete OC used in the initial phase of the RRT+ program in the framework of COST Action TU1404 was selected. For the preconditioning of coarse recycled aggregate the same procedure as for the coarse natural aggregate used in the OC concrete was followed. Type and content of the SP and W/C ratio were adjusted in order to provide adequate workability. The obtained results show that concrete mixtures with the recycled concrete aggregate can possess adequate properties in fresh and hardened state, even in case of full replacement of natural aggregate by crushed concrete grains, if highly efficient PCE SP is used.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00