Study on Pump
ACI 304.2R-96 Placing Concrete by Pumping Methods
Reported by ACI Committee 304
Neil R. Guptill, Chairman David J. Akers Casimir Bognacki* James L. Cope† Michael Gardner Daniel J. Green* Terence C. Holland Thomas A. Johnson* Samuel A. Kalat Robert A. Kelsey* John C. King William C. Krell Gary R. Mass Patrick McDowell Dipak T. Parekh Roger J. Phares* James S. Pierce Paul E. Reinhart Royce J. Rhoads* Kenneth L. Saucier Paul R. Stodola William X. Sypher* Robert E. Tobin* Kevin Wolf
*Member of subcommittee that prepared this report.
†Chairman
of subcommittee that prepared this report.
This report describes pumps for transporting and placing concrete. Rigid and flexible pipelines are discussed and couplings and other accessories described. Recommendations for proportioning pumpable concrete suggest optimum gradation of aggregates; outline water, cement, and admixture requirements; and emphasize the need for evaluation of trial mixes for pumpability. The importance of saturating lightweight aggregates is stressed. Suggestions are given for layout of lines; for maintaining uniform delivery rate, as well as uniform quality of concrete at the end of the line; and for cleaning out pipelines. This report does not cover shotcreting or pumping of nonstructural insulating or cellular concrete. Keywords: admixtures; aggregate gradation; aggregates; cement content; coarse aggregates; concrete construction; concretes; conveying; couplings; fine aggregates; fineness modulus; lightweight aggregate concrete; lightweight aggregates; mix proportioning; pipeline; placing; placing boom; pozzolans; pumped concrete; pumps; quality control; water content.
2.3—Trailer pumps 2.4—Truck-mounted concrete pumps 2.5—Placing booms 2.6—Specialized equipment 2.7—Safety Chapter 3—Pipeline and accessories, p. 304.2R-5 3.1—General description 3.2—System pressure capacity 3.3—Rigid placing line—Straight sections, bends, and elbows 3.4—System connection 3.5—Flexible system—Hose types and
Reported by ACI Committee 304
Neil R. Guptill, Chairman David J. Akers Casimir Bognacki* James L. Cope† Michael Gardner Daniel J. Green* Terence C. Holland Thomas A. Johnson* Samuel A. Kalat Robert A. Kelsey* John C. King William C. Krell Gary R. Mass Patrick McDowell Dipak T. Parekh Roger J. Phares* James S. Pierce Paul E. Reinhart Royce J. Rhoads* Kenneth L. Saucier Paul R. Stodola William X. Sypher* Robert E. Tobin* Kevin Wolf
*Member of subcommittee that prepared this report.
†Chairman
of subcommittee that prepared this report.
This report describes pumps for transporting and placing concrete. Rigid and flexible pipelines are discussed and couplings and other accessories described. Recommendations for proportioning pumpable concrete suggest optimum gradation of aggregates; outline water, cement, and admixture requirements; and emphasize the need for evaluation of trial mixes for pumpability. The importance of saturating lightweight aggregates is stressed. Suggestions are given for layout of lines; for maintaining uniform delivery rate, as well as uniform quality of concrete at the end of the line; and for cleaning out pipelines. This report does not cover shotcreting or pumping of nonstructural insulating or cellular concrete. Keywords: admixtures; aggregate gradation; aggregates; cement content; coarse aggregates; concrete construction; concretes; conveying; couplings; fine aggregates; fineness modulus; lightweight aggregate concrete; lightweight aggregates; mix proportioning; pipeline; placing; placing boom; pozzolans; pumped concrete; pumps; quality control; water content.
2.3—Trailer pumps 2.4—Truck-mounted concrete pumps 2.5—Placing booms 2.6—Specialized equipment 2.7—Safety Chapter 3—Pipeline and accessories, p. 304.2R-5 3.1—General description 3.2—System pressure capacity 3.3—Rigid placing line—Straight sections, bends, and elbows 3.4—System connection 3.5—Flexible system—Hose types and