Title: Determination of the Water-Cement Ratio of Concrete by the Buoyancy Principle

Author(s): Tarun R. Naik and Bruce W. Ramme

Publication: Materials Journal

Volume: 86

Issue: 1

Appears on pages(s): 3-9

Keywords: accelerated tests; buoyancy; fresh concrete; quality control; water-cement ratio; Materials Research

DOI: 10.14359/1796

Date: 1/1/1989

Abstract:
Presents a procedure developed for the rapid determination of the water-cement ratio of fresh concrete for quality control and quality assurance. The water-cement ratio can be used to evaluate whether the actual concrete composition complies with the job specifications and also to check the uniformity of the concrete within or between batches. The major advantage of using such a method is that concrete can be analyzed immediately when delivered to the jobsite. Thus, if the concrete does not meet the project specifications, it could be rejected before it is an integral part of the project. The method presented demonstrates potential for rapid jobsite water-cement ratio analysis of fresh concrete.