Self-compacting recycled aggregate concrete using out-of-service railway superstructure wastes

JOURNAL OF CLEANER PRODUCTION

卷:230

Article

Sainz-Aja, Jose¹  Carrascal, Isidro¹  Polanco, Juan A.¹  Thomas, Carlos¹  Sosa, Israel¹  Casado, Jose¹  Diego, Soraya¹ 

[1] Univ Cantabria, ETS Ingn Caminos Canales & Puertos, LADICIM Lab Sci & Engn Mat, Ave Castros 44, E-39005 Santander, Spain

关键词: Self-compacting concrete;    Recycled aggregate concrete;    Slab track;    Ballast;    Sleepers;    Durability;   

DOI  :  10.1016/j.jclepro.2019.04.386

来源: Elsevier

【 摘 要 】

Slab track is replacing obsolete ballasted track. This work proposes crushing out-of-service ballast and sleepers for use as aggregates for constructing the slab track. Three kinds of recycled self-compacting concretes were designed; the first one with aggregates from crushed ballast, the second one with aggregates from crushed sleepers and the third one with both kinds of aggregates in the proportion they appear in the track. The mechanical and durability properties of these concretes were analysed. The durability test was focused on freeze-thaw and drying-wetting cycles. The results obtained lead to the conclusion that out-of-service track could be used to build the new one, closing the loop. (C) 2019 Elsevier Ltd. All rights reserved.

【 授权许可】

Free