Field Measurement of Water-cement Ratio of Fresh Concrete
Author | : Carina Santos |
Publisher | : |
Total Pages | : 232 |
Release | : 1999 |
Genre | : |
ISBN | : |
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Author | : Carina Santos |
Publisher | : |
Total Pages | : 232 |
Release | : 1999 |
Genre | : |
ISBN | : |
Author | : Amy M. Dowell |
Publisher | : |
Total Pages | : 52 |
Release | : 2002 |
Genre | : Concrete |
ISBN | : |
Author | : Amy M. Dowell |
Publisher | : |
Total Pages | : 420 |
Release | : 2001 |
Genre | : |
ISBN | : |
Author | : James Koelliker |
Publisher | : |
Total Pages | : 64 |
Release | : 1994 |
Genre | : Air-entrained concrete |
ISBN | : |
The objective of this project was to develop a water-cement ratio measurement meter for easy, rapid and reliable use in the field. The goal was that the equipment be portable, easy to use, low cost and low maintenance, and be able to provide consistent and accurate results. A prototype device has been developed to measure the water-cement ratio of a plastic concrete mix. The method is based on the turbidity of water-cement slurry separated from a concrete mixture by "pressure sieving". Consistent results were obtained for both air entrained and non-air entrained concrete. Statistical analyses of the test results have shown that the Kansas Water-Cement Ratio Meter can measure the water-cement ratio of fresh concrete with an accuracy of +/-0.01 with 90% confidence. The test time is less than 10 minutes which includes cleaning the equipment. Further evaluation with admixtures, and under field conditions are planned
Author | : Michael Fox |
Publisher | : |
Total Pages | : 39 |
Release | : 2007 |
Genre | : Concrete |
ISBN | : |
Author | : Highway Innovative Technology Evaluation Center (U.S.) |
Publisher | : ASCE Publications |
Total Pages | : 60 |
Release | : 1996-01-01 |
Genre | : Technology & Engineering |
ISBN | : 9780784474044 |
Prepared by the Highway Innovative Technology Evaluation Center, a CERF Service Center. This report describes a HITEC evaluation designed to determine the basic capabilities and limitations of the Model 4430 gauge, manufactured by the Troxler Electronic Laboratories,Øfor use in quality control and quality assurance procedures for concrete construction. The ratio of water to cementitious materials in a concrete mix is recognized as a prime determinant of the strength and ultimate durability of the concrete. The Model 4430 Nuclear Water/Cement Ratio Gauge is designed to measure the water-to-cement ratio in fresh concrete sequentially. The evaluation was carried out in four phases: computer simulations, laboratory testing,precision and bias evaluation, and field demonstrations.
Author | : Joe G. Tom |
Publisher | : Transportation Research Board National Research |
Total Pages | : 86 |
Release | : 1986 |
Genre | : Technology & Engineering |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 4 |
Release | : 1990 |
Genre | : Concrete |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 302 |
Release | : 1990 |
Genre | : Concrete |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 838 |
Release | : 1983 |
Genre | : |
ISBN | : |