ALKALI-SILICA REACTION OF CONCRETE WITH ADMIXTURES

The effects of calcium nitrite solution, fly ash, silica fume, and their combination on the alkali-silica reaction were studied experimentally according to the American Society of Testing and Materials (ASTM) C 227 (mortar bar test). To explore the mechanism of such effects, chemically combined water tests and x-ray diffraction examinations were also conducted. The microstructural information provided by these experiments was in agreement with the macroscopic observations. A neural network analysis was then conducted to study the feasibility of the prediction of a theoretical model. To solve the consequent nonlinear coupled equations, some globally convergent skills were adopted. The results showed that a cascade-correlation algorithm could produce reasonable outputs that coincide with the experimental results after proper training.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Supplemental Notes:
  • Financial support was provided under the grant NO. CRC 98/01 EG04.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Li, Zhihao
  • Mu, B
  • Peng, J
• Publication Date: 2000-3

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 243-248
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 126
  • Issue Number: 3
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Admixtures; Algorithms; Alkali silica reactions; Calcium nitrite; Concrete; Electron microscopy; Expansion; Experiments; Fly ash; Mathematical models; Mathematical prediction; Microstructure; Mortar; Neural networks; Silica fume; Solutions (Chemistry); Tests; Water; X rays
• Identifier Terms: ASTM International
• Subject Areas: Data and Information Technology; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00789007
• Record Type: Publication
• Contract Numbers: CMS-9713944, CRC 98/01 EG04, CMS-9872379
• Files: TRIS
• Created Date: Mar 26 2000 12:00AM