To provide a novel cement which is alkalescent, capable of solidifying a
wide range of soil and applicable to biological environment. That is, a
cement composition comprising 100 parts by weight of magnesium oxide
comprising 5 to 25% by weight of at least any one of silicic acid,
alumina and iron oxide, 3 to 35 parts by weight of a phosphate, 2 to 30
parts by weight of gypsum and 0.005 to 7 parts by weight of an
oxycarboxylic acid or a ketocarboxylic acid.
Обеспечить цемент романа alkalescent, способно твердеть широкийа ассортимент почвы и применимо к биологической окружающей среде. That is , состав цемента состоя из 100 частей by weight of окись магния состоя из 5 к 25% by weight of по крайней мере любое одна из кремниевой кислоты, окись глинозема и утюга, от 3 до 35 части by weight of фосфат, от 2 до 30 части by weight of гипс и от 0.005 до 7 части by weight of oxycarboxylic кислота или ketocarboxylic кислота.
