泡沫混凝土(Foamed Concrete).pptVIP

Foamed Concrete Major ： Structural Engineering Name ： * * Student ID: ********* Foamed Concrete Foamed concrete is one kind of lightweight porous materials. It makes foaming agent aqueous preparation into foam by physical method, then add the foam into slurry which have mixed cement-based cementitious material, aggregate, admixture, additives and water etc, after that, mixed stirring, casting molding, curing in natural or steam. Figure 1 Foamed concrete Figure 2 The sectional view of foamed concrete Classified by Cementing Material Cement Magnesite Gypsum Volcano calcareous cement Classified by Padding Coal ash foamed concrete scoria foamed concrete Straw foamed concrete,etc Classified by Function Temperature retention Temperature retention structural Structural Classified by Application Building Gardens Engineering Industrial Classified by Curing Method natural curing Steam curing Steam pressure curing Domestic： Rosin size foaming 、animal’s useless fair foaming、 Aerating Powder 、resin soap foaming、 Norlig foaming， These foaming agents are less function, poor stability and low strength. In recent years, China has developed a number of good solid resin foam agent and protein foaming agent, such as CON-A foaming, CCW-95 solid foaming,U-foaming,HJ-3 sulfonate series microbubble agent Overseas： It’s mainly on proteins’ type, which are lots of bubbles, good stability, and high strength. Cement Water Sand Mixing Cement mortar Mixing again Foamed concrete Vesicant Water Dilution and Assemblage Frothing Bubbles Transport pipeline Pouring Curing 1. Lightweight Because the foamed concrete contains large number of closed pores, it has a good thermal properties——thermal insulation, which is not possessed by ordinary concrete. It is also a good energy-saving material to uses as wall and roofing materials of a building. 2. Heat Preservation and Adiabatic The density of foamed concrete is low, and the level is genera