Portland Cement Concrete Roads by James T. Voshell and R. E. Toms surveys concrete-pavement practice for highway engineers and others interested in public-road improvement. Issued by the United States Department of Agriculture as Bulletin 1077, it is dated October 21, 1922. Both authors are identified with the Bureau of Public Roads.
A practical account of road construction
The introduction places the bulletin within the growth of concrete paving and acknowledges that experience and research continue to improve methods. It presents the work as an account of contemporary practice rather than a final statement that could remain unchanged.
The contents follow a useful sequence: materials and proportioning, design, construction, organization and equipment, costs, maintenance and resurfacing. Appendices provide additional quantities, pumping information and cost data.
For an infrastructure-history collection, the booklet offers a compact view of the many operations behind a paved road. It connects the visible wearing surface with drainage, subgrade preparation, supply arrangements and the protection of fresh concrete.
Materials and proportioning
The materials section covers cement, fine aggregate, coarse aggregate, water and reinforcement. Proportioning follows, together with quantities required. The discussion makes material quality part of road construction rather than an issue separate from the work on site.
These pages are useful to readers examining why nominally similar pavements could behave differently. Ingredients, their preparation and the way they are combined all enter the process. The bulletin’s later construction discussion returns to the practical handling of those materials.
Historical quantities and mixture guidance should be interpreted with their date and intended materials in mind. They are not a current pavement specification and do not establish the performance of a modern mixture.
Pavement design, joints and drainage
The design chapter considers pavement width, thickness and crown, then superelevation and widening on curves. Joints and steel reinforcement receive separate attention. Shoulders, ditches, curbs and gutters connect the pavement with the surrounding route.
This breadth is one of the bulletin’s main strengths. A road is treated as a cross-section and a drainage problem as well as a strip of concrete. The discussion helps explain the relationship between the finished surface, its edges and the ground supporting it.
Bituminous surface treatment and the cross-section complete the design range. Researchers can use these topics to compare the choices made in early concrete-road work with later pavement systems, while keeping the period’s traffic and construction assumptions distinct.
Preparing, placing and protecting the work
The construction material begins with grading and drainage, followed by subgrade preparation and forms. Handling and hauling materials occupy a substantial section before mixing and placing. The sequence shows why delivery and organization can affect the work at the paving front.
Finishing the surface is followed by protection and curing. The bulletin also discusses placing concrete in freezing weather. These subjects make clear that producing a shaped pavement is not the end of construction: the newly placed material still needs appropriate care.
Photographs, diagrams and tables illustrate the operations and equipment. They are useful evidence of road-building practice in the period and help readers understand arrangements that can be difficult to picture from text alone.
Equipment, cost and maintenance
Organization and equipment are treated alongside capital requirements and the cost of concrete pavements. The later material addresses maintenance and resurfacing old concrete. The book therefore follows the road beyond the initial act of placing a new surface.
The appendices include quantities of materials, tables relating to pumping water and costs of federal-aid pavements. These are historical reference data. Their usefulness today lies in comparison and research, rather than direct use as a budget or a design basis.
Audience and scan
This free ebook suits transport historians, civil-engineering researchers and readers interested in the practical organization of construction. It shows how material selection, pavement geometry, equipment and maintenance were brought together in one guide. Present-day road work requires current standards and engineering assessment. The PDF contains 78 digital pages with searchable text, photographs and illustrations. Recognition errors can affect small labels and numerical tables, so compare precise values with the scanned page.
Book details
- Author / credited contributor: James T. Voshell and R. E. Toms
- Publisher: United States Department of Agriculture; Government Printing Office, Washington
- Year: 1922
- Edition: USDA Bulletin 1077; October 21, 1922
- Digital length: 78 PDF pages
- Language: English
- File size: 7.63 MB
