| 摘要 |
PROBLEM TO BE SOLVED: To provide a quick setting agent containing sodium aluminate excellent in quick setting property.SOLUTION: There is provided a quick setting agent containing sodium aluminate having a content molar ratio between NaO and AlO(NaO/AlOmolar ratio) of 0.7 to 1.5 and half width value of a diffraction peak on a (040) crystal surface in a range of 2θ=51 to 53° in an X-ray diffraction analysis ((2θ/°) of 0.300 or more. There is also provided a quick setting agent containing 100 pts.mass of calcium aluminate and 1 to 25 pts.mass of the sodium aluminate.SELECTED DRAWING: None |
