关键词: 泡沫混凝土;海水;孔结构;水化产物

Abstract: Based on the image process and analysis software,the properties of foamed concrete with different content of seawater are investigated.The results show that with an increasing content of seawater,the dry apparent density and the compressive strength of foamed concrete are increased by the more hydration products that result from the positive effect of more inorganic salt ions on the hydration of cementitious materials.However,the foaming ability of the foaming agent can be inhibited by the inorganic salt ions,especially calcium ion,which can lead to a less foam content and a lower porosity.Meanwhile,the foam can be separated by more hydration products,which leads to a small pore size.Therefore,the porosity and the average pore size of foamed concrete are finally decreased with an increasing content of seawater.

Key words: foamed concrete;seawater;pore structure;hydration product