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ACI 303R 12:2012 Edition

ACI 303R 12:2012 Edition

$42.52

303R-12 Guide to Cast-in-Place Architectural Concrete Practice

Published By Publication Date Number of Pages
ACI 2012 36
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This guide presents recommendations for producing cast-in-place architectural concrete. The importance of specified materials, forming, concrete placement, curing, additional treatment, inspection, and their effect on the appearance of the finished product are discussed. Architectural concrete requires special construction techniques, materials, and requirements that are unique to each project. The specific recommendations and information presented in this guide should be used accordingly. Keywords: admixture; aggregate; architectural concrete; beam; bushhammer; cement; coating; column; consolidation; cracking; curing; deflection; exposed-aggregate finish; finish; form lining; formwork; joint; joint sealant; mixture proportion; pigment; placing; quality control; release agent; repair; retarder; sealant; texture; wall.

PDF Catalog

PDF Pages PDF Title
3 CONTENTS
4 CHAPTER 1— INTRODUCTION
CHAPTER 2— DEFINITIONS
5 CHAPTER 3— ARCHITECTURAL CONSIDERATIONS
3.1—Architectural features
3.1.1 General acceptance criteria
3.1.2 Measurement
3.1.3 Variations in color and shading
3.1.4 Finishes
3.2—Architectural design
3.2.1 General criteria
3.2.2 Details of architectural design
3.2.2.1 Unchamfered corners
6 3.2.2.2 Chamfered corners
3.2.2.3 Joints
3.2.2.4 Soffits
3.2.2.5 Sloped surfaces
7 3.2.3 Combination with precast concrete
3.3—Coatings and sealers
3.3.1 Purpose
8 3.4—Joint sealants
3.5—Specifications
3.5.1 General
3.5.2 Design reference sample
3.5.3 Mandatory prebid conference
3.5.4 Preconstruction mockup
9 3.5.5 Shop drawings
3.5.6 Inspection and quality control
3.5.6.1 General
3.5.6.2 Qualification of the inspector
3.5.6.3 Duties of the inspector
3.5.6.4 Final acceptance
CHAPTER 4— STRUCTURAL CONSIDERATIONS
10 4.1—Spalling
4.2—Deflections
4.3—Cracking
4.4—Joints
4.5—Beams and slabs
11 4.6—Columns
4.7—Walls
12 CHAPTER 5— FORMS
5.1—General
5.2—Materials
13 5.2.1 Lumber
5.2.2 Plywood
5.2.3 Metals
14 5.2.4 Plastics
5.2.5 Plaster waste molds
5.3—Economics
5.4—Formwork accuracy
15 5.4.1 Bracing and walers
5.4.2 Tolerances
5.5—Form joints
5.5.1 Prevention of leakage
5.5.2 Fins
5.6—Textures and patterns
5.6.1 Form marks
16 5.6.2 Form liners
5.7—Formwork accessories
5.7.1 Ties
17 5.7.2 Tie removal
5.8—Form coatings and sealers
5.8.1 Function
18 5.8.2 Types of coatings and sealers
5.8.2.1 Mill-sealed form panels
5.8.2.2 Field-applied coatings
5.9—Form release agents
5.9.1 General
5.9.2 Selection
5.9.3 Types of release agents
19 5.9.4 Influence of form materials
5.9.5 Site storage
5.9.6 Application of release agents
20 5.10—Form removal
5.10.1 General
5.10.2 Protection of concrete
5.10.3 Procedures for form removal
5.10.4 Protection and care of forms
CHAPTER 6— REINFORCEMENT
6.1—General
21 6.2—Clear space
6.2.1 Clear spacing between bars
6.3—Reinforcement supports and spacers
6.4—Tie wire
6.5—Zinc-coated (galvanized) steel reinforcement
22 6.6—Epoxy-coated reinforcing bars
CHAPTER 7— CONCRETE MATERIALS AND MIXTURE PROPORTIONING
7.1—General
7.2—Materials
7.2.1 Portland cements and special cements
7.2.2 Aggregates
23 7.2.3 Admixtures
7.2.3.1 Air-entraining agents
7.2.3.2 Accelerating admixtures
7.2.3.3 Water-reducing and set-retarding admixtures
7.2.3.4 Pozzolans and slag
7.2.4 Pigments and color admixtures
7.2.5 Water
24 7.3—Proportioning, mixing, and temperature control
7.3.1 Temperature
CHAPTER 8— PLACING AND CONSOLIDATION
8.1—Conveying and placing
8.1.1 General
8.1.2 Conveying
8.1.3 Depositing in the form
8.2—Consolidation
8.2.1 General
8.2.2 Internal (immersion) vibration
25 8.2.3 Form vibration
8.2.4 Revibration
8.2.5 Spading
CHAPTER 9— CURING
9.1—General
26 9.2—Curing in forms
9.3—Moist curing
9.4—Membrane curing
9.5—Hot weather curing
CHAPTER 10— TREATED ARCHITECTURAL SURFACES
10.1—Surface retarders
10.2—High-pressure water jet
10.3—Acid wash
27 10.4—Abrasive blasting
10.5—Tooling or other mechanical treatments
28 10.5.1 Bush-hammering
10.5.2 Grinding
10.5.3 Manual treatment
CHAPTER 11— FINISHING AND FINAL CLEANUP
11.1—General
11.2—Tie holes
11.3—Blemish repair
29 11.4—Stain removal
11.5—Sealers and coatings
CHAPTER 12— REFERENCES
30 12.2—Cited references
31 APPENDIX A— ARCHITECTURAL CONCRETE PHOTOS

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