Qualitiy of recycled concrete made by a truck mixer

Title: Qualitiy of recycled concrete made by a truck mixer
Author(s): T. Nawa
Paper category : conference
Book title: RILEM International Symposium on Environment-Conscious Materials and Systems for Sustainable Development
Editor(s): N. Kashino and Y. Ohama
Print-ISBN: 2-912143-55-1
e-ISBN: 2912143640
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 179 - 186
Total Pages: 8
Nb references: 1
Language: English

Abstract: In this study, a closed recycling system for demolished concrete in urban area is proposed as one of advanced recycling system of concrete resources. The proposed system consists of heat and rubbing plant to produce recycled aggregates and truck-mixing concrete plant for manufacturing recycled concrete. As a site occupied by a truck mixing plant is smaller than that of a stationary mixing plant, it seems that the truck mixing plant is more suitable to a closed recycling system for concrete in urban areas. In order to verify feasibility of the proposed new closed recycling system including the truck-mixing plant, we examined the properties of the concrete made by a truck mixer and compared them with the properties of recycled concrete made by a stationary mixer. High quality recycled aggregates, which were produced by heating and rubbing plant, were used as fine and coarse aggregates. The results of this study show that the recycled concrete made by a truck mixer has only a little difference in performances as compared with that made by a stationary mixer. Therefore, truck mixing is useful in achieving a closed recycling system for concrete in urban areas.

Online publication: 2004-11-24
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143640.021