Effect of Air Entraining Agent on Properties of Lightweight Plastering Gypsum Mortar
The effects of high air entraining agent content-low lightweight aggregate content and non-air entraining agent-high lightweight aggregate content on the physical and mechanical properties of lightweight plastering gypsum(LPG)mortar were studied,and the effects of air entraining agent on the pore characteristic of plastering gypsum were analyzed using mercury intrusion porosimetry(MIP)and scanning electron microscopy(SEM).The results show that the internal pores of plaster gypsum mixed with air entraining agent and lightweight aggregate are mainly pores.With the increase of air entraining agent content,the internal porosity of plastering gypsum increases,but the internal pore size first increases and then decreases.When the high air entraining agent content-low lightweight aggregate content LPG mortar and the non-air entraining agent-high lightweight aggregate content LPG mortar achieve the same performance,the air entraining agent can significantly reduce the amount of vitrified microbeads,achieving green environmental protection and energy conservation.
air entraining agentvitrified microbeadlightweight plastering gypsumproperty of mortarpore characteristic
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