A transient pressure pulse method for the mesurement of permeability of a cement grout

The paper discusses the application of a transient pressure pulse technique for the laboratory evaluation of the permeability characteristics of a cementitious grout material with a relatively low permeability. The experimentation involves the internal pressurization of a cylindrical grout specimen with a concentric circular cavity. The time-dependent decay of the fluid pressure within the cavity is used as the basis for the computation of the permeability of the grout. The paper presents details of the experimental methodologies and the mathematical procedures which are used to evaluate the permeability. The results of a series of radial flow pressure pulse tests are used to ascertain the permeability characteristics of a cementitious grout.