@article {Liu:2019:1533-4880:251,
title = "Nanomechanical Properties of Geopolymer/Cement Matrix in Recycled Aggregate Concrete",
journal = "Journal of Nanoscience and Nanotechnology",
parent_itemid = "infobike://asp/jnn",
publishercode ="asp",
year = "2019",
volume = "19",
number = "1",
publication date ="2019-01-01T00:00:00",
pages = "251-254",
itemtype = "ARTICLE",
issn = "1533-4880",
eissn = "1533-4899",
url = "https://www.ingentaconnect.com/content/asp/jnn/2019/00000019/00000001/art00036",
doi = "doi:10.1166/jnn.2019.16463",
keyword = "Recycled Aggregate Concrete, Nanoindentation, Geopolymer, Cement",
author = "Liu, Zhen and Peng, Hui and Cai, Chunsheng",
abstract = "The numerical simulation of concrete at small scales often requires the knowledge of the mechanical properties of the constitutive phases. To obtain more information to serve as the inputs in numerical simulation, an experimental investigation was conducted to characterize the nanomechanical
properties of geopolymer/cement matrix in full-green recycled aggregate concrete (RAC). A two-step mixing procedure was applied to prepare RAC samples. Two water/cement (w/c) ratios were employed for the geopolymeric RAC (GRAC) to investigate the influence of the w/c ratio on nanomechanical
properties of geopolymer matrix in RAC. By the grid nanoindentation technique, it was found that the geopolymer matrix in GRAC has an elastic modulus of 13.54 GPa and 10.38 GPa for the w/c ratio of 0.4 and 0.45, respectively. The cement matrix in the RAC (w/c ratio of 0.5) has an elastic modulus
of 20.38 GPa.",
}