|
Author(s): |
Jun-li Yu, School of Chemistry and Chemical Engineering, Guangxi University, Guangxi, Nanning, 530004
Le-ping Liu, School of Chemistry and Chemical Engineering, Guangxi University, Guangxi, Nanning, 530004
Xue-min Cui, School of Chemistry and Chemical Engineering, Guangxi University, Guangxi, Nanning, 530004 |
|
Abstract: |
Aluminum powder foaming method is adapted to fabricate porous geopolymer materials. The influence of different content and modulus of water-glass, content of aluminum powder on the compressive strength and open porosity has been systematically studied. In addition, the open porosity increases but the compressive strength decreases with the increment of aluminum powder content. Porous materials with high porosity and high strength are successfully prepared when the ratio of MK/WG（wt%）is 1,the modulus of water-glass is 1.2, the content of aluminum powder is 0.20%（wt%）at foaming temperature of 80℃. The compressive strength of porous materials with porosity rate of 75 % can over 1.6 MPa, and the largest pore diameter is less than 2mm.
|