Partial-Depth Impregnation

Even thongh the extensive research programs have been realized the full-depth of PIC, it did not become a commercially applied material because of technological difficnlties in sitn. Its nse is limited to partial-depth impregnation and to relatively small elements produced in pre-cast plants, for example, power transformer boxes are made of PIC thanks to its low dielectric constant and low creep. Fibre reinforcement is also nsed. 

Partially impregnated concrete, which is also called snrface impregnated concrete, is usually accomplished by a simple soaking techniqne. The main objective of partial impregnation is to obtain an in-depth protective zone of reduced permeability on the surface of the concrete. Thus, improvement in dnrability rather than strength is aimed for by use of partial impregnation. 

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