从图中可以观察到，经过前4小时的水分重新分布，未掺纳米氧化硅的体系的凝

It can be observed from the figure that after the first 4 hours of water redistribution, the maximum change in gel pore signal of the system without nano-silica increases from 1 to 1.8. The gel water signal of the nano-doped system increased from 1 to about 1.2. This is related to their total porosity and water content of different pore sizes.

As can be seen from the figure, after the first 4 hours of water rediscoloyation, the maximum change in gel hole signal of the system not doped with nanosilicon oxide increased from 1 to 1.8. The nano-doped system gel water signal increased from 1 to about 1.2. This is related to their total pore rate and water content of different ranges of apertures.

It can be seen from the diagram that after 4 hours of moisture redistribution, the gel pore signal volume of the system without nano silica is changed from 1 to 1.8. And the signal of gel water increased from 1 to 1.2. This is related to their total porosity and water content in different pore sizes.