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Title: Three-dimensional characterization of hardened paste of hydrated tricalcium silicate by serial block-face scanning electron microscopy

Journal Article · · Materials
DOI:https://doi.org/10.3390/ma12121882· OSTI ID:1525403
 [1]; ORCiD logo [2];  [1];  [3];  [1];  [1];  [1]
  1. Tongji Univ., Shanghai (China)
  2. Tongji Univ., Shanghai (China); Univ. College London, London (United Kingdom); Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Tongji Univ., Shanghai (China); Univ. College London, London (United Kingdom)

With the application of a three-dimensional (3D) characterization technique, serial block-face scanning electron microscopy (SBFSEM), the 3D microstructure of a hydrated cement monomineral, tricalcium silicate (C3S), was measured with nanoscale resolution. The 3D morphologies of anhydrous particles, hydrated products, and capillary pores were visualized. Closed and open pores were discovered inside an anhydrous particle. The size and distribution of both the anhydrous C3S particles and their capillary pores were analyzed quantitatively and the porosity was determined to be 9%. The distribution of pores was found to be in a good agreement with the inner and outer product model of Hu et. al., with an inner shell distance of 860 nm. Here, considering the spatial resolution of the instrument and the volume of sample measured, most pores in this experiment could be characterized as capillary pores.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1525403
Report Number(s):
BNL-211767-2019-JAAM
Journal Information:
Materials, Vol. 12, Issue 12; ISSN 1996-1944
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Cited By (1)

Investigation of the Flow Properties of CBM Based on Stochastic Fracture Network Modeling journal July 2019