期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 68, 期 -, 页码 677-684出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2014.06.076
关键词
Recycled aggregates; Cement paste; Interfacial transition zone; Microstructure; SEM; Nanoindentation
Today it is highly recognized that the structure of the cement paste matrix close to the aggregates, is different from the rest of the cement paste. This investigation compares the possible interfacial transition zone (ITZ) formation by means of the nanoindentation test and Scanning Electron Microscopy (SEM), with aggregate inclusions of three different natures: limestone (NA), recycled concrete aggregate (RCA) and recycled ceramic aggregate (RC). This study demonstrated that nature of the aggregate and the w/c ratio conditions determines the micro structural characteristics of the aggregate-cement paste interface and the mechanical properties of the ITZ. (C) 2014 Elsevier Ltd. All rights reserved.
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