CURING OF CONCRETE PAVEMENTS IN SUB-ZERO TEMPERATURES

In the Kashmir valley of India, the ambient temperature decreases to below 10 degrees C for a considerable period and pavement construction work has to be suspended. Curing methods are described and the method considered most appropriate is to place a polythene sheet over the concrete within 3-12 hours of laying it with overlaps of 200 mm. A thin layer of waste loose soil/sand is sprinkled over the sheet and then after 4-8 hours, a second layer is spread over the first to a depth of 125-175 mm thick. Edges should be similarly treated with shuttering or polythene and soil/sand. The purpose of the polythene is to keep the moisture in the concrete and of the soil to insulate the concrete by retaining the heat of hydration. One advantage of the method is that it could be left unattended in the event of hostilities. Data are given of a trial in November 2000 when a minimum temperature of -8 degrees C occurred. Use of high early strength concrete was considered appropriate only in peaceful areas of Kashmir.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1790571
• Corporate Authors:

  Indian Roads Congress

  Jamnagar House, Shahjahan Road
  New Delhi,   India  110 011
• Authors:
  • GUPTA, V K
  • BHATTACHARYYA, U
• Publication Date: 2001-6

Language

• English

Media Info

• Features: References;
• Pagination: p. 21-4
• Serial:
  • Indian Highways
  • Volume: 29
  • Issue Number: 6
  • Publisher: Indian Roads Congress
  • ISSN: 0376-7256

Subject/Index Terms

• TRT Terms: Concrete curing; Fresh concrete; Frost protection; Heat; Insulation blankets; Moisture content; Polyvinyl hydrocarbons; Temperature
• Geographic Terms: India
• ITRD Terms: 4702: Curing (concrete); 4750: Fresh concrete; 2960: Frost blanket; 6743: Heat; 8045: India; 5920: Moisture content; 7422: Polyvinylhydrocarbon; 6722: Temperature
• Subject Areas: Construction; Materials;

Filing Info

• Accession Number: 00817275
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Oct 4 2001 12:00AM