File:America's Highways 1776–1976 - page 460b.jpg

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English: A slip form paver eliminates the need for setting steel forms, since the forms move along with the paving machine. A relatively stiff concrete is used so that, by the time the machine passes on, the concrete will hold its shape.
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Source https://en.wikisource.org/wiki/Page:America%27s_Highways_1776%E2%80%931976.djvu/466
Author Federal Highway Administration

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Public domain This image is a work of a United States Department of Transportation employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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current20:49, 31 January 2023Thumbnail for version as of 20:49, 31 January 20231,041 × 619 (556 KB)Sp1nd01 (talk | contribs)Uploaded a work by Federal Highway Administration from https://en.wikisource.org/wiki/Page:America%27s_Highways_1776%E2%80%931976.djvu/466 with UploadWizard

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