Preparation of Organic-inorganic Mixture Material Based on Cementitious Material Base of the Aluminous Rock by Impregnation

Abstract

Polymerized cementitious materials were prepared by using Al2O3 less than 50% aluminous rocks, then the impregnation method is used. The methyl methacrylate (MMA) monomer with containing the curing agent was immersed into the cementitious polymer material. The polymerization reaction was triggered again. An organic – inorganic mixture material was prepared by in-situ polymerization of MMA in inorganic cementitious materials. The pore structure was characterized by N2 adsorption-desorption. After immersive curing, the pore volume, specific surface area and the average pore diameter of the aluminosilicate polymer all decreased significantly. The most probable pore size was reduced from about 50 nm to about 20 nm, which proved that the organics were loaded into the nano-pores of the inorganic cementitious polymeric materials, the organic phase and the inorganic phase were compounded at the nanometer scale and finally formed the organic-inorganic composites. The mechanical property tests showed that the organic-inorganic composites have better strength and toughness than the aluminosilicate polymers.