UNTHERMOSTATED MULTICHANNEL HEAT CONDUCTION CALORIMETER

Heat conduction calorimetry is a convenient method to detect cement-admixture incompatibility. As cement hydrates, heat is produced, and the measurement of this heat is used to monitor and quantify the hydration reaction. This paper presents the design of a simple unthermostated heat conduction calorimeter that can simultaneously monitor the heat production rate in 14 samples of cement paste or mortar. As it is not thermostated, its performance is governed by the ambient temperature stability and the heat capacity balance between each sample and its reference. The author shows that the instrument can be used to detect cement-admixture incompatibility and to quantify retardation time. This paper was presented at a symposium on cement-admixture interactions (December 2003, Tampa, Florida).

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3528769
• Corporate Authors:

  ASTM International

  100 Barr Harbor Drive
  West Conshohocken, PA  United States  19428-2959
• Authors:
  • Wadso, L
• Publication Date: 2003-12

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 85-91
• Serial:
  • Cement, Concrete and Aggregates
  • Volume: 26
  • Issue Number: 2
  • Publisher: American Society for Testing and Materials (ASTM)
  • ISSN: 0149-6123
  • Serial URL: http://journalsip.astm.org/JOURNALS/CEMENT/cca_home.html

Subject/Index Terms

• TRT Terms: Admixtures; Calorimeters; Cement paste; Heat conduction; Heat insulating materials; Hydration; Instrumentation; Measuring instruments; Mortar
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00986559
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 22 2005 12:00AM