Analysis on penetration depth of cementitious
capillary crystalline waterproof materials with SEM and EDAX

1 Sample preparation
2 Test apparatus
3 Test result and analysis
3.1 Test and analysis to CN2000B net paste and C20 mortar with SEM and EDAX
3.2 Test and analysis to 7d age and 14d age with SEM and EDAX
3.3 Test and analysis to 28d age with SEM and EDAX
3.4 Change rule of penetration depth
4 Conclusions
 

Analysis on penetration depth of cementitious
capillary crystalline waterproof materials with SEM and EDAX

XU Ming-Gen
(China Railway 25th Bureau Group Co., Ltd.，Guangzhou 510600，Guangdong)

Abstract：Elements at different depths in the coating of cementitious capillary crystalline waterproof material CN20OOB were determined with Scanning Electron Microscopy (SEM) and X-ray Energy Dispersive Analysis (EDAX)，and their relative percentages were achieved through calculation. Their penetration depths were deduced from the variations of elements content in different depths. The results showed the penetration depths through the mortar increased with curing time．
Key words：cementitious capillary crystalline waterproof material；SEM ；EDAX；penetration depth

　　Water is carrier of active chemical substances in cementitious capillary crystalline waterproof material. The active chemical substances penetrate to the concrete interior by virtue of the carrier. The insoluble crystals are produced in concrete by catalysis of the active chemical substances. The crystals fill the capillary channel and macroscopical tiny cracks in concrete;