INSULATION FOR PROTECTION OF NEW CONCRETE IN WINTER
RECENT INVESTIGATIONS SHOW THAT NEW CONCRETE WITH ONE PERCENT CALCIUM CHLORIDE, IF KEPT FROM DROPPING BELOW 50 F. FOR THREE DAYS, HAS SUFFICIENT PROTECTION FROM FREEZING. AS AN EXTRA PRECAUTION, THREE MORE DAYS PROTECTION FROM DROPPING BELOW 32 F. MAY BE REQUIRED. SINCE IT IS DURING THE FIRST THREE DAYS THAT CONSIDERABLE HEAT IS GENERATED BY THE SETTING CEMENT, IT HAS BEEN LEARNED THAT INSULATION, WITHIN PRACTICAL LIMITS, IS CAPABLE OF RETAINING ENOUGH OF THIS HEAT TO KEEP NEW CONCRETE FROM DROPPING BELOW THESE TEMPERATURES. THIS AVOIDS CONSTRUCTION OF SPECIAL ENCLOSURES, FUEL COSTS, AND DANGER OF FIRE. EXAMPLES OF FIELD APPLICATIONS AND TESTS OF INSULATION ARE REPORTED TOGETHER WITH RESULTANT CONCRETE TEMPERATURES. ALSO, SOME AIDS ARE DESCRIBED WHICH HAVE BEEN DEVELOPED FOR DETERMINING WHAT INSULATION IS NECESSARY UNDER VARIOUS CONDITIONS. /AUTHOR/
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Supplemental Notes:
- Vol 23, No 3, PP 253-272, 12 FIG, 4 TAB
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Authors:
- Tuthill, L H
- Glover, R E
- Spencer, C H
- Bierce, W B
- Publication Date: 1951-11
Media Info
Subject/Index Terms
- TRT Terms: Calcium chloride; Cold weather; Concrete; Electric insulating materials; Freezing; Insulating materials; Operations; Temperature
- Subject Areas: Administration and Management; Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00216458
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 3 1994 12:00AM