Jump to content

Placing Concrete by Pumping Methods


Recommended Posts

Posté par bentafat_rachid

Placing Concrete by Pumping Methods

Reported by ACI Committee 304

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 *******;

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 *******


Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...