Fifteen Years of Slip-Form Paving.

Traces the development of slip-form concrete paving in the United States. Covers the period since the first half-mile project was built in Iowa in 1949 through the 1963 construction season when several hundred miles of paving were built with slip-form pavers. The early developmental machines are described and the newer improved and electronically controlled slip-form pavers which are now being used to build high-speed turnpikes, expressways, and interstate highways as well as light traffic secondary roads are also discussed. The principles of slip-form paving are described, the requirements for ade-quate subbase preparation are discussed and some of the important con-siderations for proper mix proportioning are outlined. Illustrations of slip- form pavers for a wide variety of projects, which demonstrate the versatility of this equipment, are presented. Offers some of the data to date which prove the excellent riding qualities which can be obtained through the use of slip-form construction. [ABSTRACT FROM AUTHOR]