Cold weather concreting

Abstract

1. Winter Construction Specific Features of Winter Concreting in Winter Conditions Problems of Winter Concreting 2. Effects of Frost on the Structure and Properties of Concrete Modern Views on the Hardening of Concrete The Phase State of Water in Concrete at Different Temperatures The Mechanism of Deterioration of Concrete Due to Early Freezing Precuring of Concrete Before Freezing Effects of Early Freezing on Concrete Properties Concrete in the Frozen State and its Basic Properties 3. Preparations for Concreting in Winter Conditions 4. Concretes Containing Antifreeze Admixtures The Principle of the Method and its Theory Selection and Assignment of Antifreeze Admixtures Procedures 5. Thermos Curing The Principle and Application of the Thermos Method Placement and Curing of Concrete in Structures Built on Permafrost Ground Curing and Cooling of Concrete in Massive Structures 6. Electric Contact Heating of Concrete The Principle and Application of the Method Heaters for Electric Contact Heating Heating Formworks Covered with Conductive Materials Application of Electric Contact Heating of Concrete 7. Electrode Heating of Concrete Electric Conductivity of Concrete Processes in Concrete Caused by Electric Current Passing Through it Electrodes for Electric Heating of Concrete Processes at the Interface of Concrete and an Electrode Electric and Thermal Fields in Electric Heating External Mass Exchange in Electric Heating Electrode Heating Procedures 8. Electric Preheating of Concrete Mixtures General Considerations and the Principle of the Method The Theoretical Background of the Accelerated Heating of Concrete Mixtures Internal Heat Exchange During the Accelerated Electric Heating of Concrete Changes in Plastic Properties of Concrete Caused by Accelerated Heating Physical-Mechanical Properties of Concrete Subjected to Accelerated Heating Equipment for Electric Preheating of Concrete Mixtures Concreting Procedures with Preheated Concrete Mixtures Preheating of Concrete Mixtures in Truck Mixers 9. Induction Heating of Concrete The Principle and Application of the Method Determining Basic Parameters of Heating Induction Heating of Concrete in Framed Structures 10. Sealing Joints Between Precast Units and Between Precast and Cast-in-Place Members in Composite Construction Specific Features of Joints Between Precast Concrete Units Erection of Precast Concrete Units Curing of Sealing Concrete in Joints 11. Curing of Cast-in-Place Concrete in Enclosures The Principle of the Method and Types of Enclosures Curing of Concrete in Enclosures Air Exchange in Enclosures Concreting in Enclosures 12. Some Problems of Economics of Winter Concreting Appendix - Specific Power Values Required to Heat Concrete with Strip Electrodes Placed on One Side References Index