STRENGTH LOSSES IN HEAT CURED CONCRETE

THE PURPOSE OF THE PRESENT INVESTIGATION WAS TO STUDY THE CAUSES FOR STRENGTH LOSSES AT 28 DAYS IN HEAT-CURED CONCRETE AS COMPRED WITH NORMALLY CURED CONCRETE. THE EXPERIMENTS WERE DESIGNED TO TEST THE HYPOTHESIS THAT IF THE TENSILE STRENGTH OF THE CONCRETE IS NOT SUFFICIENT TO WITHSTAND THE PRESSURE IN THE AIR PORES, THE CONCRETE WILL CRACK. THE HEAT CURING WAS DONE VERY RAPIDLY, SIMPLY BY SUBMERGING THE SPECIMENS IN A WATER BATH HAVING THE FINAL CURING TEMPERATURE. IT CAN BE CONSIDERED ESTABLISHED THAT PHYSICAL EFFECTS, RATHER THAN CHEMICAL, ARE THE DOMINATING CAUSES FOR STRENGTH LOSSES. ONE TEST SERIES WAS CONDUCTED TO FIND A RELATION BETWEEN THE TENSILE STRENGTH AND THE ULTIMATE PORE PRESSURE. TO AVOID STRENGTH LOSSES IN HEAT CURING, THREE BASICALLY DIFFERENT WAYS ARE CONCEIVABLE: RESISTING THE PORE PRESSURE; ELIMINATING THE PORE PRESSURE; OR LETTING THE CONCRETE CRACK AND REPAIRING IT AFTERWARDS.

• Authors:
  • Alexanderson, J
• Conference:
  • Swedish Cement Concr Inst Procc
• Publication Date: 1972

Media Info

• Pagination: 135 p.
• Serial:
  • Issue Number: 43

Subject/Index Terms

• TRT Terms: Concrete; Concrete curing; Concrete tests; Consistency; Cracking; Heat; Losses; Pore pressure; Strength of materials; Tensile strength
• Uncontrolled Terms: Concrete cracking
• Old TRIS Terms: Concrete consistency
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00214173
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 13 1972 12:00AM