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Concrete is one of the largest building materials in use. The introduction of foam into concrete, made the concrete have a small internal, closed independent uniform bubbles, which can form light weight, good insulation properties of foam concrete, mainly used for roofing, non-load-bearing walls and thermal insulation layer pipeline. With the foam concrete’s widespread application in construction, an in-depth study of the blowing agents, as well as foam concrete is necessary.In this paper, to address the foaming agent, technology of foam materials, preparation, material selection, material ratio has done a series of experiments on.The results show that, OP and the cellulose ether compound as a blowing agent, when cellulose ether concentration between 0.3% ~ 0.5% and OP concentration between 0.4% ~ 0.6 %, have a good foaming effect and lawer cost.Through bubbling testing, the water ratio in the 0.60 ~ 0.63, the slurry mixing easy, foam can be uniformly distributed, will not be hierarchical, the product have a densty between 0.65～0.70g/cm3.Fly ash mainly as an inert filling material in foam energy-saving materials, the amount of fly ash is more, the compressive strength of foam materials is lawer. The common cement as the cementation materials, the content of fly ash shouldn’t be more than 45%, while the magnesium oxychloride cement as the cementation materials, the content of fly ash shouldn’t be more than 40%.In magnesium oxychloride cement foam material, magnesia and sodium chloride have a right ration can improve the proformance of magnesium oxychloride cement materials. Fly ash has improved the performance of the magnesium oxychloride cement products to some extent, such as water resistance and anti-frost phenomena.In addition, we also made same foaming research with Phosphogypsum materials, through the formation of small pores in their internal, which are uniformly distributed and independent of each other, have a marked increase in the capacity of its insulation.
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