An experimental program to study the preparation and properties of partially impregnated polymerized concrete specimens is described.

The structure of polymer impregnated concrete and its cracking behaviour under load was studied by radiographic techinique.

Basic problems related to manufacturing of polymer impregnated cementitious materials are discussed.

Three mortar mixes of widely differing porosities were impregnated with three vinyl monomers and methanol.

Techniques for producing polymer-impregnated concrete (PIC) are evaluated and a processing cycle recommended. A study of concrete mix variation indicates that this parameter has only a small effect on the final strength of the composite. The impregnation of high-pressure steam-cured concrete produces PIC with strengths greater than those obtained from fog-cured material.