Admixture and foam concrete using same

The invention provides an admixture, and belongs to the technical field of foam concrete. The invention relates to an admixture, which contains 5 to 40 weight percent of RO (Reverse Osmosis) phase and comprises the following components in percentage by weight: 10 to 50 percent of SiO2, 20 to 55 percent of CaO, 1 to 10 percent of MgO, 0 to 30 percent of Fe2O3, 0 to 20 percent of Al2O3 and 0 to 10 percent of NaHCO3. Through component optimization, the steel slag powder can be more economically applied to the foam concrete, and the comprehensive performance, especially the use durability, of the foam concrete is improved. 本发明提供了一种掺合料，属于泡沫混凝土技术领域。一种掺合料，含5～40％重量百分比的RO相，含有如下重量百分比的成分：SiO2：10～50％，CaO：20～55％，MgO：1～10％，Fe2O3：0～30％，Al2O3：0～20％，NaHCO3：0-10％。本发明通过组分优化，使钢渣粉得以更经济地用于泡沫混凝土，提升泡沫混凝土的综合性能，尤其是使用耐久性。