325.9R-91
Guide for Construction of Concrete Pavementsand Bases (Reapproved 1997)
1991, Reapproved 1997, 27 pp.
$54.50

This report covers the construction of concrete pavements and concrete bases without attempting to include inflexible specifications for procedures, materials, or equipment. References are made to specifications, but only as a guide to enable a selection of requirements suitable for a particular location or class of work. The document is slanted to some degree toward use by agencies other than state highway departments, or turnpike and airfield authorities, which usually have large and experienced engineering staffs with knowledge of past performance of pavements in the area. Sections are devoted to specifying, and testing materials, and to the possible influence of materials on skid resistance , economy, and durability. Maximum aggregate size is mentioned as sometimes relating to pavement durability. Subgrades and subbases are treated only as to final preparation for paving. Recommendations for forms are included as well as recommendations for projects using slipforms. Arrangement of joints is described, and references are given for guidance in using reinforcement. Sections on normal and high-early-strength concrete proportioning rely heavily on reference to ACI 211.1, but point out the special problems connected with pavement concretes and the use of admixtures in pavement concrete. Sections on mixing, placing, finishing, and curing concrete refer to other ACI reports where pertinent, but make recommendations for the special handling necessary in the case of pavements. Concrete bases are treated where procedures vary from those used for pavements, and recommendations and references are given for cold and hot weather concreting.

Contents:
Chapter 1 -- Introduction

Chapter 2 -- Materials

2.1 Sources

2.2 Chemical admixtures

2.3 Aggregates

2.4 Cement and cementitious materials

2.5 Curing materials

2.6 Expansion joint filler

2.7 Joint sealants

2.8 Nonbituminous inserts

2.9 Reinforcing steel and accessories

2.10 Water

Chapter 3 -- Sampling and testing of materials for quality assurance

3.1 Sampling

3.2 Test methods

3.3 Flexural strength of concrete as a basis of design

3.4 Strength tests of field concrete

3.5 Job control acceptance criteria

3.6 Gradation, specific gravity, and absorption of aggregates

3.7 Air content

3.8 Consistency

Chapter 4 -- Subgrade or subbase preparation and forms

4.1 General

4.2 Fine grading

4.3 Requirements and checking of the finished grade

4.4 Stationary forms

Chapter 5 -- Installation of joints and reinforcement

5.1 General

5.2 Longitudinal joints

5.3 Isolation or expansion joints

5.4 Weakened plane contraction joints

5.5 Transverse construction joints

5.6 Load transfer devices

5.7 Installation of dowel assemblies

5.8 Joint sealing

5.9 Placing reinforcement

Chapter 6 -- Concrete properties and proportions of materials

6.1 General statement

6.2 Properties for pavements and bases

6.3 Proportioning

Chapter 7 -- High-early-strength concrete

7.1 Methods of production

Chapter 8 -- Mixing concrete

8.1 Batching plants

8.2 Measurement and handling of materials

8.3 Central-mixed concrete

8.4 Ready-mixed concrete

Chapter 9 -- Placing and finishing concrete

9.1 Placing

9.2 Spreading

9.3 Consolidation

9.4 Finishing

9.5 Texturing of surface

9.6 Edging

9.7 Ramps and intersections

9.8 Surface requirments

Chapter 10 -- Curing and protecting concrete

10.1 Curing

10.2 Cold weather curing

10.3 Protection of finished pavement

10.4 Protection against rain

Chapter 11 -- Concrete bases to be subsequently covered with

a surface course

11.1 General

11.2 Materials

11.3 Econocrete

11.4 Proportioning

11.5 Transverse weakened-plane joints

11.6 Surface finishing

11.7 Curing for base courses

Chapter 12 -- Cold and hot weather concreting

12.1 Cold weather concreting

12.2 Hot weather concreting

Chapter 13 -- Miscellaneous

13.1 Thickness tolerances

Chapter 14 -- References

14.1 Recommended references

14.2 Cited references