ACI 207.5R 11:2011 Edition

$54.98

207.5R-11 Report on Roller-Compacted Mass Concrete

Published By	Publication Date	Number of Pages
ACI	2011	75

Guaranteed Safe Checkout

Category: ACI

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

Description

Roller-compacted concrete (RCC) is a concrete of no-slump consistency in its unhardened state that is typically transported, placed, and compacted using earth and rockfill construction equipment. This report includes the use of RCC in structures where measures should be taken to cope with the generation of heat from hydration of the cementitious materials and attendant volume change to minimize cracking. Material mixture proportioning, properties, design considerations, construction, and quality control are covered. The materials, processes, quality control measures, and inspections described in this document should be tested, monitored, or performed as applicable only by individuals holding the appropriate ACI certifications or equivalent. Keywords: admixtures; aggregates; air entrainment; compacting; compressive strength; conveying; creep properties; curing; lift joints; mixture proportioning; monolith joints; placing; shear properties; vibration; workability

PDF Catalog

PDF Pages	PDF Title
3	CONTENTS
4	CHAPTER 1— INTRODUCTION 1.1— General 1.2—What is roller-compacted concrete? 1.3—History
7	1.3.1 Production and delivery
8	1.3.2 Facing systems 1.3.3 Lift configurations
9	1.3.4 Design sections 1.3.5 Extreme climates 1.3.6 Mixture proportions
10	1.4—Advantages and disadvantages 1.5—Performance of RCC dams
11	CHAPTER 2— NOTATION AND DEFINITIONS 2.1— Notation 2.2—Definitions CHAPTER 3— MATERIALS AND MIXTURE PROPORTIONING FOR ROLLER- COMPACTED CONCRETE 3.1— General 3.2—Materials 3.2.1 Cementitious materials 3.2.1.1 Portland cement
12	3.2.1.2 Pozzolans
13	3.2.2 Aggregates 3.2.2.1 General quality issues 3.2.2.2 Coarse aggregate
14	3.2.2.3 Fine aggregate 3.2.2.4 Fines
15	3.2.3 Chemical admixtures 3.3—Mixture proportioning considerations 3.3.1 Workability
16	3.3.2 Strength
17	3.3.3 Segregation 3.3.4 Permeability 3.3.5 Heat generation 3.3.6 Durability 3.3.7 Construction conditions 3.4—Mixture proportioning methods 3.4.1 General
18	3.4.2 USACE method 3.4.3 U. S. Bureau of Reclamation high paste method
19	3.4.4 Roller-compacted dam method
20	3.4.5 Maximum density method 3.5—Laboratory trial mixtures 3.5.1 General 3.5.2 Visual examination of fresh concrete 3.5.3 Testing 3.6—Field adjustments
21	CHAPTER 4— PROPERTIES OF HARDENED ROLLER- COMPACTED CONCRETE 4.1— General 4.2—Strength 4.2.1 Compressive strength
23	4.2.2 Tensile strength
24	4.2.3 Shear strength
25	4.3—Elastic properties 4.3.1 Modulus of elasticity
26	4.3.2 Poisson’s ratio 4.4—Dynamic properties
27	4.5—Creep 4.6—Volume change 4.6.1 Drying shrinkage 4.6.2 Autogenous volume change 4.7—Thermal properties 4.8—Tensile strain capacity 4.9—Permeability
28	4.10—Durability 4.10.1 Abrasion erosion
29	4.10.2 Freezing and thawing 4.11—Density CHAPTER 5— DESIGN OF ROLLER-COMPACTED CONCRETE DAMS 5.1— General 5.2—Foundation
30	5.2.1 Foundation quality 5.2.2 Foundation shaping 5.2.3 Embedded structures
31	5.2.4 Leveling concrete 5.3—Dam section considerations
32	5.4—Stress and stability analyses 5.4.1 Methods to analyze stress and stability
33	5.4.2 Shear-friction factor 5.4.3 Determining design values for shear
34	5.4.4 Strain softening and stress redistribution 5.4.5 Uplift and upstream watertightness 5.4.6 Tensile strength 5.4.7 Additional considerations for lift joints 5.5—Temperature studies and control
35	5.6—Contraction joints and cracks
36	5.7—Galleries and drainage
37	5.8—Facing design and seepage control 5.8.1 Natural RCC face 5.8.2 RCC against formwork
38	5.8.3 RCC and bedding mortar against forms 5.8.4 RCC with GERCC against forms 5.8.5 RCC against forms with membrane 5.8.6 RCC against slipformed concrete element 5.8.7 RCC against anchored precast panels 5.8.8 RCC against anchored precast panels with membrane
39	5.8.9 RCC cast concurrently with consolidated concrete facing 5.8.10 RCC with lagging anchored cast-in-place concrete 5.8.11 RCC with lagging anchored cast-in-place concrete 5.8.12 RCC with lagging anchored slipformed concrete 5.9—Spillways, aprons, and stilling basins
40	5.10—Outlet works
41	CHAPTER 6— CONSTRUCTION OF ROLLER- COMPACTED CONCRETE DAMS 6.1— General 6.2—Aggregate production and batching and mixing plant location
42	6.3—Batching and mixing 6.3.1 General
43	6.3.2 Batching and drum mixing methods 6.3.3 Continuous batching and mixing methods 6.3.4 Mixer uniformity 6.4—Transporting and placing
44	6.4.1 Equipment selection guides 6.4.2 Segregation considerations 6.4.3 Transporting methods 6.4.3.1 Conveyors
46	6.4.3.2 Haul vehicles
48	6.4.4 Placing and spreading
50	6.4.5 Sloped layer placing method 6.5—Compaction 6.5.1 Roller selection
51	6.5.2 Minimum passes and lift thickness
52	6.5.3 Timing and procedures 6.6—Lift joints 6.6.1 Lift horizontal joint development
53	6.6.2 Lift-joint treatment 6.7—Contraction joints 6.7.1
54	6.7.2 Grouting contraction joints 6.8—Forms and facings 6.8.1 General
55	6.8.2 Formed faces 6.8.3 Grout-enriched roller-compacted concrete
56	6.8.4 Precast concrete forms 6.8.5 Uncompacted slope
57	6.8.6 Curb forming 6.9—Curing and protection from weather
58	6.10—Galleries and drainage CHAPTER 7— QUALITY CONTROL OF ROLLER- COMPACTED CONCRETE 7.1—General 7.1.1 Quality control and design 7.1.2 Quality control goals 7.1.3 Quality control and production delays 7.1.4 Quality trends
59	7.2—Activities before RCC placement 7.2.1 General 7.2.2 Preparatory issues 7.2.2.1 Staffing 7.2.2.2 Testing controls 7.2.2.3 Inspection controls 7.2.2.4 Facilities and equipment 7.2.2.5 Communications 7.2.3 Production issues 7.2.3.1 Aggregate production
60	7.2.3.2 Aggregate sampling 7.2.3.3 Stockpile temperature
61	7.2.3.4 Mixing plant sampling and calibration 7.2.3.5 Mixer uniformity testing 7.2.3.6 RCC placement plan 7.2.4 RCC test section and test strips
62	7.2.5 Determining field density/compaction requirements 7.2.6 Checking compaction equipment 7.3—Activities during RCC placement 7.3.1 General 7.3.2 Inspection 7.3.2.1 Batch plant monitoring
63	7.3.2.2 RCC placement 7.3.3 Material testing 7.3.3.1 Cement and pozzolan 7.3.3.2 Admixtures 7.3.3.3 Aggregates 7.3.4 RCC testing 7.3.4.1 Consistency tests
64	7.3.4.2 Density and air-void tests
65	7.3.4.3 Moisture and water content tests 7.3.4.3.1 Chemical tests 7.3.4.3.2 Drying tests 7.3.4.3.3 Nuclear test 7.3.4.4 Determining cement content
66	7.3.4.5 Evaluating RCC mixture proportions 7.3.4.5.1 General 7.3.4.5.2 Batch-type plant records and calibration 7.3.4.5.3 Continuous mixing plant records and calibration 7.3.4.6 Temperature 7.3.4.7 Making test specimens
67	7.3.4.8 Strength testing 7.3.4.9 Control charts 7.4—Activities after RCC placement 7.4.1 General 7.4.2 Curing RCC 7.4.3 Protecting RCC
68	7.4.4 Post-construction coring CHAPTER 8— REFERENCES 8.1— Referenced standards and reports
70	8.2—Cited references