Preparation of Portland Cement Components by PVA Solution Polymerization

Abstract

The four components of Portland cement: dicalcium silicate, C2S (Ca2SiO4), tricalcium silicate, C3S (Ca3SiO5), tricalcium aluminate, C3A (Ca3Al2O6), and tetracalcium aluminate iron oxide, C4AF (Ca4Al2Fe3O10), were formed using a solution-polymerization route based on polyvinyl alcohol (PVA) as the polymer carrier. The powders were characterized using X-ray diffraction techniques, BET specific surface area, and scanning electron microscopy. This method produced relatively pure, synthetic cement components of sub-micron or nanometer crystallite dimensions, high specific surface area and extremely high reactivity at relatively low calcining temperatures. The PVA content and its degree of polymerization had a significant influence on the homogeneity of the final powders. Two types of degree of polymerization (D.P.) PVA were used. Lower crystallization temperatures and smaller particle size powders were obtained from the low D.P. type of PVA at optimum content.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1998
Accession Number
ADA358601

Entities

People

  • Elizabeth A. Benson
  • Stephanie J. Lee
  • Waltraud M. Kriven

Organizations

  • University of Illinois Urbana–Champaign

Tags

DTIC Thesaurus Topics

  • Air Force
  • Biodegradable Plastics
  • Chemical Synthesis
  • Chemistry
  • Electron Microscopy
  • Materials
  • Materials Processing
  • Materials Science
  • Metals
  • Particle Size
  • Polymerization
  • Polymers
  • Portland Cement
  • Resins
  • Scanning Electron Microscopy
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Aerosol Science/Aerosol Physics
  • Pavement Materials Engineering.
  • Polymer Science and Engineering.

Technology Areas

  • Fully Networked C3
  • Fully Networked C3 - Command and Control
  • Microelectronics