ACI 207.2R 07 2007
$33.31
207.2R-07 Report on Thermal and Volume Change Effects on Cracking of Mass Concrete
| Published By | Publication Date | Number of Pages |
| ACI | 2007 | 32 |
This report presents a discussion of the effects of heat generation and volume change on the design and behavior of mass concrete elements and structures. Emphasis is placed on the effects of restraint on cracking and the effects of controlled placing temperatures, concrete strength requirements, and material properties on volume change. Keywords: adiabatic; cement; concrete cracking; creep; drying shrinkage; foundation; heat of hydration; mass concrete; modulus of elasticity; placing; portland cement; pozzolan; restraint; stress; temperature; tensile strength; thermal expansion; volume change
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | CONTENTS |
| 4 | CHAPTER 1— INTRODUCTION 1.1— Scope 1.2—Mass concrete versus structural concrete 1.3—Approaches for crack control |
| 5 | CHAPTER 2— THERMAL BEHAVIOR 2.1— General 2.2—Thermal gradients |
| 6 | CHAPTER 3— PROPERTIES 3.1— General 3.2—Strength requirements |
| 7 | 3.3—Tensile strength 3.4—Creep 3.5—Thermal properties of concrete |
| 8 | 3.5.1 Linear coefficient of expansion |
| 9 | 3.5.2 Specific heat 3.5.3 Thermal conductivity 3.5.4 Thermal diffusivity 3.6—Modulus of elasticity |
| 10 | 3.7—Strain capacity CHAPTER 4— HEAT TRANSFER AND VOLUME CHANGE |
| 11 | 4.1—Heat generation 4.1.1 Adiabatic temperature rise 4.1.2 Cement fineness 4.1.3 Other cementitious materials |
| 12 | 4.1.4 Estimating adiabatic temperature rise |
| 13 | 4.1.5 Effects of member volume and surface area |
| 14 | 4.1.6 Other examples 4.2—Moisture contents and drying shrinkage |
| 15 | 4.3—Ambient temperatures 4.4—Placement temperature |
| 16 | 4.5—Final temperature in service 4.6—Heat dissipation 4.6.1 Heat dissipation from concrete mass 4.6.2 Heat dissipation from specific shapes |
| 17 | Example 1 Example 2 Example 3 |
| 18 | Example 4 Example 5 |
| 19 | 4.6.3 Graphical solutions for heat dissipation through mass concrete 4.6.4 Schmidt’s method for determining temperature gradients |
| 21 | Example 6 (refer to Appendix A for this example worked inSI units) 4.6.5 Heat dissipation through reinforced concrete |
| 23 | 4.7—Summary and examples Example 7 Example 8 |
| 24 | CHAPTER 5— RESTRAINT 5.1— General |
| 25 | 5.2—Continuous external restraint 5.2.1 Stress distribution 5.2.1.1 Structural shape restraint factor KR 5.2.1.2 Foundation restraint factor Kf 5.2.2 Cracking pattern |
| 26 | 5.3—Internal restraint |
| 27 | 5.3.1 Stress distribution and cracking CHAPTER 6— CRACK WIDTHS 6.1— General |
| 28 | 6.2—Crack control joints 6.3—Limitations CHAPTER 7— REFERENCES 7.1— Referenced standards and reports 7.2—Cited references |
| 29 | APPENDIX A A.1— Notation |
| 30 | A.2—Metric conversions |
