DIFFERENTIATION OF INTERLAYER AND ADSORBED WATER IN HYDRATED PORTLAND CEMENT BY THERMAL ANALYSIS

A RECENTLY PROPOSED MODEL ASCRIBES THE PHYSICAL AND MECHANICAL PROPERTIES OF HYDRATED PORTLAND CEMENT TO THE PRESENCE OF INTERLAYER WATER, PREVIOUSLY CONSIDERED TO BE ADSORBED ON FREE SURFACES. IN THE PRESENT WORK, SAMPLES WERE CONDITIONED AT VARIOUS RELATIVE HUMIDITIES FOR TIMES VARYING FROM 1 1/2 TO 14 MONTHS AND WERE DRIED TO TWO DIFFERENT LEVELS BEFORE CONDITIONING, ONE BEING D-DRY. CONDITIONS WERE CHOSEN, BASED ON THE MODEL, SO THAT THE DIFFERENT STATES OF WATER COULD BE CLEARLY ILLUSTRATED. IT WAS CONCLUDED THAT (1) THERMAL ANALYSIS DOES ALLOW DIFFERENTIATION OF INTERLAYER AND PHYSICALLY ADSORBED WATER AND (2) THAT THE DIFFERENT DEGREES OF DRYING AND VERY LONG TIMES ALLOWED FOR EQUILIBRATION SUPPORT ALL SORPTION RESULTS ON WHICH THE NEW MODEL IS BASED.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Supplemental Notes:
  • Vol 1, No 6, PP 607-620, 3 FIG, 1 TAB, 8 REF
• Authors:
  • FELDMAN, R F
  • RAMACHANDRAN, V S
• Publication Date: 1971-11

Media Info

• Serial:
  • Cement and Concrete Research
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Drying; Experiments; Hydration; Interfaces; Mathematical models; Mechanical properties; Moisture content; Portland cement; Sorption; Thermal analysis; Water
• Uncontrolled Terms: Models
• Old TRIS Terms: Interlayer spaces
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00214065
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 27 1972 12:00AM