The patch microstructure in concrete: Evidence that it exists and is not a backscatter SEM artifact

Cement and Concrete Composites

Volumn 28, Issue 7, 2006, Pages 606-612

  Diamond, Sidney ^a   Thaulow, Niels ^b  

^a PURDUE UNIVERSITY   (United States)

^b RJ LEE GROUP   (United States)

Author keywords

Computed microtomography; Hollow shell grains; Microstructure; Mortars; Patch structure; Scanning electron microscopy

Indexed keywords

BACKSCATTERING; SCANNING ELECTRON MICROSCOPY;

HOLLOW SHELL GRAINS; PATCH STRUCTURE;

CONCRETES;

EID: 33746383055     PISSN: 09589465     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.cemconcomp.2006.04.003     Document Type: Article

References (15)

1. Diamond S. Percolation due to overlapping ITZs in laboratory mortars? A microstructural evaluation. Cem Concr Res 33 7 (2003) 949-955
2. Diamond S. The patchy structure of cement paste in conventional concretes. Concrete Science and Engineering: A tribute to Arnon Bentur, RILEM PRO 36 (2004), RILEM Publications S.A.R.L., Paris 85-94
3. Diamond S. The patch microstructure in concrete: the effect of mixing time. Cem Concr Res 35 5 (2005) 1014-1016
4. Diamond S. The patch microstructure in concrete: the effect of superplasticizer. Cem Concr Res 36 4 (2006) 776-779
5. Idorn G.M. Marine concrete technology. J Coastal Res 7 4 (1991) 1043-1056
6. Wong H.S., and Buenfeld N.R. Patch microstructure in cement based materials: Fact or artefact?. Cem Concr Res 36 5 (2006) 990-997
7. Buenfeld NR, Wong HS. Recent developments in backscattered electron imaging and image analysis of pores for predicting transport in concrete. In: Proceedings of the Conference on Cementitious Materials as Model Porous Media: Nanostructure and Transport Processes, July 2005, Monte Veritá, Switzerland.
8. Jakobsen U.H., Laugesen P., and Thaulow N. Determination of water-cement ratio in hardened concrete by optical fluorescence microscopy. In: Khan M.S. (Ed). Water-cement ratio and other durability parameters, techniques for determination (2000), SP-191, ACI International, Farmington Hills, MI 27-41
9. Kjellsen K.O., Monsøy A., Isachsen K., and Detwiler R.J. Preparation of flat-polished specimens for SEM-backscattered electron imaging and X-ray microanalysis - importance of epoxy impregnation. Cem Concr Res 33 4 (2003) 611-616
10. Buenfeld, NR, personal communication, April 2005.
11. Spurr R.A. A low viscosity epoxy resin embedding medium for electron microscopy. J Ultrastr Res 26 3 (1969) 3-43
12. Diamond S. Discussion of the paper "Patch microstructure in cement-based materials: Fact or artefact" by HS Wong and NR Buenfeld. Cem Concr Res 36 5 (2006) 998-1001
13. Wong H.S., and Buenfeld N.R. Reply to the discussion by Sidney Diamond of the paper "Patch microstructure in cement-based materials: Fact or artefact?. Cem Concr Res 36 5 (2006) 1002-1003
14. Diamond S, Landis E. Microstructural features of a mortar as seen by computed microtomography. Mater Struct, accepted for publication.
15. Kjellsen KO, personal communication, Dec. 2005.