| 摘要 |
<p>A concrete material comprising a concrete aggregate containing bag having an opening formed in the top and a discharge opening formed in the center of the bottom face, a means for opening/closing the discharge opening, a suspension rope fixed to the concrete aggregate containing bag such that the bag is suspended with the discharge opening located at the lower part, a predetermined quantity of concrete aggregate contained in the concrete aggregate containing bag, a cement containing bag where its lower part opened to the concrete aggregate containing bag containing the concrete aggregate is closed by bending or overlapping, a predetermined quantity of cement contained in the cement containing bag, and a cement containing bag suspension rope so fixed to the upper part of the cement containing bag as to be suspended substantially simultaneously with the above-mentioned suspension rope when it is used. Concrete aggregate and cement weighed in a concrete aggregate plant are input in a mixed state into a concrete mixer at a construction site and optimal ready-mixed concrete can be produced easily. Furthermore, deterioration in quality can be prevented because the cement is contained in the cement containing bag until it is used. When it is used, it is suspended by means of a crane, or the like, and can be input into the concrete mixer while being mixed.</p> |
