ACI 304.2R PDF

Tokazahn This report describes pumps for transporting and placing concrete. For a listing of and access to all product errata, visit the Errata page. International Concrete Abstracts Portal. Errata are not included for collections or sets of documents such as the ACI Collection. These items are not eligible for return. This guide discusses the use of pumps for transporting and placing concrete.

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Fenritaur Click here to become an online Journal subscriber. Any applicable errata are included with individual documents at the time of purchase. For a listing of and access to all product errata, visit the Errata page. Preconstruction planning for equipment placement and line routing are emphasized. PDF acu access to members.

The importance of proportioning a pumpable concrete mixture is emphasized with reference to sources for further direction on its design. R Guide to Placing Concrete by Pumping Methods The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal. ACI Committee Publication: Evaluation of trial mixtures to ensure pumpability and strength is encouraged. Methods to saturate these aggregates and provide a consistent moisture content are discussed. Rigid This guide discusses the use of pumps for transporting and placing concrete.

These items are not eligible for return. IRAM PDF 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.

Choose Product Language English. Discussions on achieving a consistent mixture and its critical importance are also addressed. The full and complete returned product will be accepted if returned within 60 days of receipt and in salable condition. Choose r Language Placing Concrete by Pumping. This report describes pumps for transporting and placing concrete. ACI Committee Publication: Any applicable errata are included with individual documents aaci the time of purchase.

Evaluation of trial mixtures to ensure pumpability and strength is encouraged. Appears on pages s: Of specific importance is a discussion on the use of lightweight aggregates. The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

Rigid and flexible pipelines, couplings and other accessories, and the various types of concrete pumps are discussed. Rigid and flexible pipelines are discussed and couplings and other accessories described.

R Placing Concrete by Pumping Methods Reapproved The importance of saturating lightweight aggregates is stressed, and suggestions are given for layout of lines, maintaining uniform delivery rate, as well as uniform quality of concrete at r end of the line, and cleaning out pipelines.

Placing Concrete with Belt Conveyors Reapproved This report does not cover shotcreting or pumping of nonstructural insulating or cellular concrete. Placing Concrete by Pumping Methods Reapproved Of specific importance is a discussion on the use of lightweight aggregates.

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Fenritaur Click here to become an online Journal subscriber. Any applicable errata are included with individual documents at the time of purchase. For a listing of and access to all product errata, visit the Errata page. Preconstruction planning for equipment placement and line routing are emphasized. PDF acu access to members. The importance of proportioning a pumpable concrete mixture is emphasized with reference to sources for further direction on its design. R Guide to Placing Concrete by Pumping Methods The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

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304.2R-17: Guide to Placing Concrete by Pumping Methods

Connections between segments should utilize coupling devices that permit rapid assembly and disassembly of components at any joint and provide a secure, sealed joint. Various special use accessories are available to customize delivery line setups to fulfill numerous concrete placing requirements. Accessories include bends of varying degree and radius, valves shut-off and diversion type , reducers, brackets, fabric and wire-reinforced hose, and cleanout elements. Pipeline surface irregularity or roughness, diameter variations, and directional changes disturb the smooth flow of pumped concrete. Exposing long lengths of pipeline to direct sunlight or extreme hot or cold temperatures may adversely affect the temperature of the concrete being pumped. The pipeline should be shielded from these conditions as necessary. All components of the system must be able to handle the maximum internal pressure which the concrete pump being used is capable of producing with an adequate safety factor.

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