Development and ita Applied Cases of the Method Using Microwave
Oven to Estimate Water-Content in Fresh Concrete
By H. Takiguchi, T. Iwashimizu and N. Yabushita
Concrete Journal, Vol.41, No.10, Oct. 2003
- Synopsis
- While measuring the water cement ratio (water content per unit volume of concrete) of the fresh concrete by the method using microwave oven by real construction and describing the various improving points of the improvement in presumed accuracy which went to accumulate from a viewpoint of securing the quality of concrete, the merit and presumed acuuracy of this technique were summarized. Moreover, the examination result of the water content per unit volume of concrete and compressive strength in real construction are also summarized to show the present condition of water content per unit volume of concrete variation. Applying this technique the improvement in compressive strength and reduction of variation have been attained. Furthermore, it also intriduces as examples of application of this technique the order method called "water cement ratio order" and applications to high strength concrete and lightweight concrete.
- Keywords:
- method using microwave oven, water cement ratio, water content per unit volume of concrete, presumed water cement ratio, mortar, water cement ratio order
