Hydrated cement paste constituents observed with atomic force and lateral force microscopy

Alva Peled, Jason Weiss

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Engineers have frequently used microscopy to better understand the structure of materials. Optical microscopy and scanning electron microscopy have been used for several decades to better understand the microstructure of cementitious composites. Very limited work has been performed to date in the cement area to study the structural characteristics of cementitious materials by Atomic Force Microscopy (AFM). This technical note describes observations from a series of images acquired using AFM as well as Lateral Force Microscopy (LFM). The objective of this work is to better understand how AFM and LFM techniques can be used as tools to better understand the nano and microstructure of cementitious materials. In this work the AFM and LFM techniques could distinguish between CSH particles and crystals of CH on the microscale. The LFM appears to be more sensitive to topographic changes and could more clearly distinguish between the different phases.

Original languageEnglish
Pages (from-to)4299-4302
Number of pages4
JournalConstruction and Building Materials
Volume25
Issue number11
DOIs
StatePublished - 1 Nov 2011

Keywords

  • Atomic Force Microscope (AFM)
  • Calcium hydroxide (CH)
  • Calcium silicate hydrates (CSH)
  • Cement
  • Lateral Force Microscope (LFM)
  • Mortar

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science (all)

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