Study on penetration depth of cement-based capillary crystalline waterpro of materials with SEM and EDAX;

Microscopic analysis is made on cement based permeable crystallization type waterproof paint and study is made on chemical reactions taken place when active ingredient of the paint penetrated into the concrete and on penetration depth of crystalloid product and active ion that may create by reaction using XRD and SEM.

The base properties of five offset paper was measured,and the penetration depth,after printing,was tested when the same ink enter into these paper.

The article is focused on the penetrating process,penetrating depth,penetrating concentrate of the active chemical substance hydrated production,the SiO32-ion,of the capillary crystalline waterproofing coatings in the base concrete in standard test condition,which is described in the GB 18445,by the way of analyzing the dates getting from the chloride ion corrosion on the concrete.

Based on the theory of plane electromagnetic wave propagation,the transmission coefficients,the reflection coefficients and the penetration depths are calculated in the case of vertically incident electromagnetic wave with various frequencies on the surface of human body.

For an absorbing medium surrounding the optical fiber core,an evanescent wave penetration depth was formulated.

The paper gives the calculated results of current density and depth of penetration, from which we conclude that the conductor with larger r.

The paper explains the skin effect phenomenon and its application in the cable TV signal transmission,emphasis on the analysis of the relation between the depth of penetration and the cable TV signal frequency.