ACI 212.3R 16:2016 Edition
$53.90
212.3R-16 Report on Chemical Admixtures for Concrete
| Published By | Publication Date | Number of Pages |
| ACI | 2016 | 80 |
This report reviews several categories and types of chemical admixtures and their use in unique concrete technologies. They are classified into 12 groups: air-entraining; normal, mid- and high-range water-reducing; accelerating; set-retarding; extended set-control; workability-retaining; viscosity- and rheology-modifying, shrinkage-reducing and shrinkage-compensating, and corrosion-inhibiting; lithium admixtures to reduce deleterious alkali-silica reaction; permeability-reducing; and miscellaneous. Chemical admixtures are used on a daily basis in the cast-in-place and precast concrete industries. Mixture designs using multiple chemical admixtures are more common today. Their successful use requires compatibility, setting times, and early strengths that are appropriate to the placing environment. Each category of admixture addresses common use and the potential benefits of a properly proportioned concrete mixture to various professionals, including the concrete contractor, concrete producer, and design professional. The sustainability of chemical admixtures and their role in sustainable construction is addressed. Finely divided mineral admixtures, such as fly ash or raw and processed natural pozzolans, are addressed in ACI 232.2R and ACI 232.1R, respectively. Keywords: accelerating; admixture(s); admixture system; air-entraining; alkali-aggregate reaction; batching order; cold weather concrete; corrosion-inhibiting; extended set control; flowing concrete; high-range water-reducing admixture; mid-range water-reducing admixture; permeability-reducing admixtures; pervious concrete; self-consolidating concrete; set-retarding; rheology-modifying; shrinkage-reducing; water-reducing; viscosity-modifying; workability-retaining.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | TITLE PAGE |
| 5 | CHAPTER 1—INTRODUCTION 1.1—Introduction 1.2—Scope |
| 7 | CHAPTER 2—DEFINITIONS 2.1—Definitions CHAPTER 3—GENERAL 3.1—Admixture benefits 3.2—Specifications for admixtures 3.3—Sampling and testing |
| 8 | 3.4—Cost effectiveness 3.5—Selection and evaluation 3.6—Proportioning and batching |
| 9 | 3.7—Batching order for adding chemical admixtures in concrete |
| 10 | 3.8—Chapter reference chart CHAPTER 4—SUSTAINABILITY 4.1—Sustainability of chemical admixtures 4.2—Use of chemical admixtures in sustainable construction |
| 12 | CHAPTER 5—AIR-ENTRAINING ADMIXTURES 5.1—Introduction 5.2—Materials for air entrainment |
| 13 | 5.3—Mechanism of entrained air |
| 14 | 5.4—Selection and evaluation 5.5—Applications |
| 15 | 5.6—Dosage 5.7—Proportioning concrete 5.8—Effects on fresh and hardening concrete |
| 16 | 5.9—Effects on hardened concrete 5.10—Quality assurance and batching |
| 17 | CHAPTER 6—NORMAL, MID-, AND HIGH-RANGE WATER-REDUCING ADMIXTURES 6.1—Introduction 6.2—Materials 6.3—Selection and evaluation |
| 18 | 6.4—Applications 6.5—Dosage |
| 19 | 6.6—Proportioning concrete 6.7—Effects on fresh and hardening concrete |
| 20 | 6.8—Effects on hardened concrete |
| 21 | 6.9—Quality assurance and batching CHAPTER 7—ACCELERATING ADMIXTURES 7.1—Introduction 7.2—Materials |
| 22 | 7.3—Selection and evaluation |
| 23 | 7.4—Applications 7.5—Dosage and proportioning concrete 7.6—Effects on fresh and hardening concrete |
| 24 | 7.7—Effects on hardened concrete 7.8—Corrosion of metals |
| 25 | 7.9—Quality assurance and batching |
| 26 | CHAPTER 8—SET-RETARDING ADMIXTURES 8.1—Introduction 8.2—Materials 8.3—Selection and evaluation |
| 27 | 8.4—Applications 8.5—Dosage 8.6—Proportioning concrete 8.7—Effects on fresh and hardening concrete |
| 28 | 8.8—Effects on hardened concrete 8.9—Quality assurance and batching CHAPTER 9—EXTENDED SET-CONTROL ADMIXTURES 9.1—Introduction 9.2—Materials 9.3—Selection and evaluation 9.4—Applications |
| 29 | 9.5—Dosage and proportioning concrete 9.6—Effects on fresh and hardening concrete 9.7—Effects on hardened concrete |
| 30 | 9.8—Quality assurance and batching CHAPTER 10—WORKABILITY-RETAINING ADMIXTURES 10.1—Introduction 10.2—Materials |
| 31 | 10.3—Dosage and effect on fresh and hardened concrete |
| 32 | 10.4—Applications |
| 33 | 10.5—Quality assurance and batching CHAPTER 11—VISCOSITY- AND RHEOLOGY-MODIFYING ADMIXTURES 11.1—Introduction 11.2—Materials 11.3—Selection and evaluation |
| 34 | 11.4—Applications 11.5—Dosage and proportioning concrete 11.6—Effects of fresh and hardened concrete 11.7—Anti-washout admixtures 11.8—Rheology-modifying admixtures |
| 35 | 11.9—Quality assurance and batching CHAPTER 12—SHRINKAGE-REDUCING AND SHRINKAGE-COMPENSATING ADMIXTURES 12.1—Introduction |
| 36 | 12.2—Materials 12.3—Mode of action 12.4—Applications 12.5—Dosage and proportioning concrete |
| 37 | 12.6—Effects on fresh and hardening concrete 12.7—Effects on hardened concrete 12.8—Quality assurance and batching CHAPTER 13—CORROSION-INHIBITING ADMIXTURES 13.1—Introduction |
| 38 | 13.2—Materials |
| 40 | 13.3—Selection and evaluation |
| 41 | 13.4—Applications 13.5—Dosage and proportioning concrete |
| 42 | 13.6—Effects on fresh and hardening concrete 13.7—Effects on hardened concrete |
| 43 | 13.8—Quality assurance and batching CHAPTER 14—LITHIUM ADMIXTURES TO REDUCE DELETERIOUS EXPANSION FROM ALKALI-SILICA REACTION 14.1—Introduction 14.2—Materials 14.3—Mechanism |
| 44 | 14.4—Dosage 14.5—Effects on concrete properties |
| 45 | 14.6—Performance tests for effectiveness 14.6—Quality assurance and batching CHAPTER 15—PERMEABILITY-REDUCING ADMIXTURES 15.1—Introduction |
| 46 | 15.2—Materials |
| 48 | 15.3—Selection and evaluation |
| 49 | 15.4—Applications 15.5—Dosage and proportioning concrete |
| 50 | 15.6—Effects on fresh and hardened properties 15.7—Quality assurance and batching CHAPTER 16—MISCELLANEOUS ADMIXTURES 16.1—Bonding admixtures |
| 51 | 16.2—Coloring admixtures 16.3—Flocculating admixtures 16.4—Fungicidal, germicidal, and insecticidal admixtures 16.5—Air-detraining admixtures |
| 52 | 16.6—Expansive/gas forming admixtures 16.7—Admixtures for cellular concrete/flowable fill 16.8—Shotcrete admixtures |
| 53 | 16.9—Admixtures for manufactured concrete products |
| 54 | CHAPTER 17—ADMIXTURES FOR FLOWING CONCRETE 17.1—Introduction 17.2—Materials 17.3—Selection and evaluation 17.4—Applications |
| 55 | 17.5—Proportioning concrete 17.6—Effects on fresh and hardening concrete |
| 56 | 17.7—Effects on hardened concrete |
| 57 | 17.8—Quality assurance and batching CHAPTER 18—ADMIXTURES FOR SELF-CONSOLIDATING CONCRETE (SCC) 18.1—Introduction 18.2—Materials for self-consolidating concrete admixtures |
| 60 | 18.3—Selection and evaluation 18.4—Proportioning concrete 18.5—Effects on fresh and hardening concrete |
| 61 | 18.6—Effects on hardened concrete 18.7—Quality assurance and batching CHAPTER 19—ADMIXTURES FOR VERY COLD WEATHER CONCRETE 19.1—Introduction |
| 62 | 19.2—Materials 19.3—Selection and evaluation 19.4—Proportioning concrete 19.5—Batching 19.6—Trial placement |
| 63 | 19.7—Placing and finishing 19.8—Effects on fresh and hardening concrete 19.9—Effects on hardened concrete 19.10—Quality assurance |
| 64 | 19.11—Cost benefit CHAPTER 20—ADMIXTURES FOR VERY-HIGH-EARLY-STRENGTH CONCRETE 20.1—Introduction 20.2—Materials for very-high-early-strength concrete |
| 65 | 20.3—Selection and evaluation |
| 66 | 20.4—Proportioning concrete 20.5—Effects on fresh and hardening concrete 20.6—Effects on hardened concrete 20.7—Quality assurance and batching |
| 67 | CHAPTER 21—ADMIXTURES FOR PERVIOUS CONCRETE 21.1—Introduction 21.2—Materials 21.3—Selection and evaluation 21.4—Applications 21.5—Proportioning 21.6—Effects on fresh and hardening concrete |
| 68 | 21.7—Effects on hardened concrete 21.8—Quality assurance and batching CHAPTER 22—REFERENCES |
| 69 | Authored documents |
