ACI ASCC-1-05 The Contractors Guide to Quality Concrete Construction – Third Edition

ACI ASCC-1-05 The Contractors Guide to Quality Concrete Construction - Third Edition

ACI ASCC-1-05 The Contractors Guide to Quality Concrete Construction – Third Edition

Copyright by ACI American Concrete Institute
Written by and for contractors, this publication provides insight into proven construction practices that will produce quality concrete construction. Contents include organizing for quality, concrete mixture designs, specifications, foundations, formwork, reinforcement and embedments in structures, joints and reinforcement for slabs-on-ground, preparing for concreting, concrete placing and finishing, common field problems, and safety. The guide can be used as a training manual or as a basic reference for field and office.
This publication is a required or suggested reference document for contractor licensing programs in Alabama, Hawaii, Louisiana, Michigan, Minnesota, Mississippi, North Carolina, Nevada, South Carolina, Tennessee, and West Virginia. Published jointly by ACI and ASCC. Keywords: Contractors

Contents: Foreword
Chapter 1: Organizing for Quality
Quality Control, Record Keeping, Contract Documents, Quality and Profit, The Construction Team, Recommended Reading

Chapter 2: The Concrete Mix
Control Tests, Sampling ASTM 172, Slump ASTM C 143, Air Content ASTM C 231 and C 173, Compressive Strength Tests, ASTM C 31 and C 39, Density Unit Weight and Yield, ASTM C 138,
– Cement
Project Specifications for Cement, Portland Cement Manufacture, Basic Types of Portland Cement
– Other Cementitious Materials
Fly Ash, Microsilica (Silica Fume), Granulated Slag
– Mixing Water
– Water-Cementitious Material Ratio
– Aggregates
– Admixtures
Water Reducers, High-Range Water Reducers, Retarders, Accelerators, Water-Reducing Retarders, Water-Reducing Accelerators, Air-Entraining Agents, Other Admixtures
– Concrete Mix Design
The Right Mix for the Job, Free Moisture in the Aggregates (Table 2.5), Water Reducer (Table 2.4, Mix #2), Fly Ash (Table 2.4, Mix #3), Adjusting for Air Entrainment
– Water Addition at the Jobsite
– Set Time

Chapter 3: The Concrete Specification
– Sources for Concrete Specifications
– Specification Categories
Prescriptive, Performance, Hybrid
– Items to Confirm in the Specification
Strength, Early Strength Requirement, Flexural Strength, Water-Cementitious Material Ratio, Minimum Cement Content, Slump, Air Entrainment, Chemical Admixtures, Delivery Time for Ready-Mixed Concrete, Temperature of Concrete—Hot and, Cold Weather Concreting, Determining the Most Rigid Criteria, of the Concrete Specification

Chapter 4: Foundations
– The Ground Below
– Bearing Capacity
– Geotechnical Investigations
– Compaction
– Basic Foundation Types
Wall Footings, Independent Isolated Column Footings, Combined Footings, Cantilever or Strap Footings, Pile or Pier Foundations, Mat, Raft, or Floating Foundation
– Groundwater Control
– Footing Forms
– Moisture Control
– Backfilling

Chapter 5: Formwork
– Safety Precautions
– Formwork Affects Concrete Quality
– Types of Forms
Job-Built Forms, Prefabricated Forms, Manufactured Forms, Special Form Systems
– Form Material and Hardware
Form Liners
– Design of Forms
– Placing Concrete in the Forms
Maintenance of Forms, Form Release Agents, Tolerances
– Cost of Formwork
– Form Removal
Measuring Concrete Strength, for Form Removal, Time as a Measure of Strength, for Form Removal
– Shoring and Reshoring
– Formwork for Slabs on Ground
– Want to Know More?

Chapter 6: Reinforcement in Structures
– Why Use Steel Reinforcement?
– Engineering and Placing Drawings
– Types of Reinforcement
Bar Identification, Welded Wire Reinforcement, Other Types of Reinforced Concrete
– Reinforcing Bar Fabrication
Fabrication Tolerances, Bundling and Tagging
– Storing and Handling Reinforcing
– Bars on the Job
– Concrete Cover
-Tolerances in Placing Steel Reinforcement
– Placing of Reinforcement
– Bar Supports and Spacers
– Splicing Reinforcing Steel
– Coordination
– Want to Know More?

Chapter 7: Joints and Embedments in Structures
– Types of Joints
– Construction Joints for Supported
– Beams and Slabs
– Contraction Joints for Walls
– Isolation Joints for Walls
– Construction Joints in Walls
Horizontal Construction Joints, Vertical Construction Joints
– Waterstops
– Embedments—Conduits, Pipes, and Sleeves
– Embedments—Anchor Bolts, Sleeves,
– Metal Plates, and Channels
– Anchors
– Points to Remember

Chapter 8: Joints and Reinforcement for Slabs-on-Ground
– Volume Changes
– Contraction (Control) Joints
Contraction Joint Spacing, Special Contraction Joint Placement
– Construction Joints
– Isolation Joints (Expansion Joints)
– Warping Joints
– Reinforcement in a Concrete Slab
Welded Wire Reinforcement, Dowels, Tie Bars, Fiber Reinforcement

Chapter 9: Preparing for Concreting
– Contractor/Ready-Mixed Concrete
– Producer Cooperation
The Concrete Mix, Ordering Responsibility, Testing Program, Water Addition at the Jobsite
– Preconstruction Conference
Some Preconstruction Conference, Agenda Items
– Jobsite Preparation
– A Checklist for Major Projects

Chapter 10: Concrete Placement and Finishing
– Depositing Concrete from the Ready-Mix Truck
– Buggying Concrete
– Belt Conveyors
– Bucket Placement
– Pumping Concrete
– Pumping Lightweight Concrete
– Consolidation during Placement
Vibration, Vibratory Screeds
– Finishing a Slab-on-Ground
Surface Finishes
– Controlling Placement
– Hot-Weather Placement
– Cold-Weather Placement
– Floor Surface Finish Tolerances
– Curing to maintain proper moisture content
– Recommended Reading

Chapter 11: Common Field Problems —
– Cause and Prevention
Fresh Concrete, Excessive Bleeding, Segregation and Poor Consolidation, Hard-to-Finish Mixes, Setting Time and Early Strength Gain, Plastic Shrinkage Cracks
– Hardened Concrete Shrinkage Cracks, Isolation Joints, Crazing (Hairline Cracking, Surface Checking), Dusting Floors, Blistering, Slab Curling, Surface Scaling, Honeycombing, Sand Streaking, Surface Voids (Bugholes), Reported Low Cylinder Strengths, Evaluating Cylinder Test Results,
– References
– Checklist of Common Field Problems
– Causes and Prevention

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