Maintenance holes all specimens under standard curing conditions, based mainly less than 50 nanometers. Pores less than 10 nm is defined as the gel pores, can draw more gel formation under standard conditions.
All the test wells under the standard conditions are mainly less than 50 nanometers. Holes less than 10 nanometers are defined as gel holes, and more gels can be produced under standard conditions.
The mesopores of all specimens cured in standard condition are mainly less than 50 nm. The pores smaller than 10 nm are defined as gel pores, and more gel can be obtained under the condition of standard samples.<br>