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ACI 304.2-17

Current Revision

Guide to Placing Concrete by Pumping Methods

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This guide discusses the use of pumps for transporting and placing concrete. Rigid and flexible pipelines, couplings and other accessories, and the various types of concrete pumps are discussed. The importance of proportioning a pumpable concrete mixture is emphasized with reference to sources for further direction on its design. Evaluation of trial mixtures to ensure pumpability and strength is encouraged. Of specific importance is a discussion on the use of lightweight aggregates. Methods to saturate these aggregates and provide a consistent moisture content are discussed. Preconstruction planning for equipment placement and line routing are emphasized. Discussions on achieving a consistent mixture and its critical importance are also addressed. Keywords: blockage; boundary layer; concrete pump; coupling; mixture design; pipeline; placing boom; preprimed; pumpability; reverse pumping; valve.

SDO ACI: American Concrete Institute
Document Number 304.2
Publication Date Jan. 1, 2017
Language en - English
Page Count
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
Jan. 1, 2017 ACI 304.2-17 Revision
Jan. 1, 1996 ACI 304.2S-96 Revision