The producing technology and improved methods of the recycled concrete aggre- gate

Author(s): Ting Du
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) New Generation of Construction Materials
Editor(s): Marijana Serdar, Nina Štirmer, John Provis
ISBN: 978-2-35158-217-6,
Vol 1. ISBN: 978-2-35158-223-7
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 287-287
Total Pages:1
Language : English

Abstract: Waste concrete can be used to produce recycled aggregate instead of natural aggregate making concrete after a series of treatment, and obviously using recycled concrete aggregates will save natural resource and energy. In the paper, two technical processes of producing the recycled aggregates from the waste concrete are designed, which can obtain the primary processed recycled aggregate and the high quality recycled aggregate separately. And for the primary processed recycled aggregate, its surface are wrapped with some old cement paste, it
will lead the properties of the recycled coarse aggregate is worse than the natural coarse aggregate, so four methods to improve the behaviours of the recycled coarse aggregate are put forward, such as cement-grout, Cement-grout mixed with Kim powder, Cement-grout mixed with 1-class fly ash and interfacial agent of YJ302. In the experiments, the recycled coarse aggregate was intensified by four methods independently, and the experimental results indicate that the strengths of the recycled aggregate and the recycled aggregate concrete processed with the cement-grout mixed with Kim powder and YJ302 are evidently higher than those of natural aggregate and natural aggregate concrete. It will give out some ideas for improving the recycled aggregate and making high-strength recycled aggregate concrete.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00