BASIC CONSIDERATIONS PERTAINING TO FREEZING- AND-THAWING TESTS

QUESTIONS ABOUT CURRENT TEST METHODS ARE RAISED AND AN ALTERNATIVE TEST SUGGESTED. KNOWLEDGE ABOUT THE MECHANISMS OF FROST ACTION IN HARDENED PASTE AND ROCK IS SUMMARIZED. EMPHASIS IS PLACED ON CONCEPTS OF CRITICAL THICKNESS AND CRITICAL SATURATION, AND THE ROLES OF AIR BUBBLES IN PASTE AND MACROPORES IN ABSORPTIVE ROCK. RAPID FREEZING IN THE LABORATORY MAY DESTROY CONCRETE THAT IS IMMUNE TO FROST UNDER NATURAL CONDITIONS. IN THE LABORATORY, IMPORTANT EFFECTS OF SEASONAL DRYING ARE NOT TAKEN INTO ACCOUNT. A NEW PROCEDURE IS PROPOSED THAT TAKES FIELD EXPOSURE INTO ACCOUNT AND USES THE PERIOD OF IMMUNITY TO FROST ATTACK AS THE PRIMARY MEASURE OF FROST RESISTANCE. /AUTHOR/

• Supplemental Notes:
  • Vol 55, pp 1132-1155, 1 TAB, 30 REF
• Corporate Authors:

  American Mining Congress

  Ring Building, 1200 18th Street, NW
  Washington, DC  United States  20036

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Powers, T C
• Publication Date: 1955

Media Info

• Serial:
  • ASTM Proceedings
  • Publisher: American Society for Testing and Materials (ASTM)

Subject/Index Terms

• TRT Terms: Air; Bubbles; Cement; Concrete hardening; Critical values; Freeze thaw tests; Frost action; Frost protection; Hardness; Laboratory studies; Pastes; Percent saturation; Pores; Rocks; Thickness
• Uncontrolled Terms: Pores
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00213884
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 1 1971 12:00AM