The Effect of Air Humidity on the Permeability Test Results of the Surface-treated Cement for Cement Powder Grouting

Abstract

In the permeability measurement of surface-treated cements in the cement powder grouting method, the humidity of air injected with cement into the sand specimen was found to have a considerable effect on the test results. The allowable range of the relative humidity of air was proposed as 10-20%. Correspondingly, the requirements for the water content condition in the test site using the cement powder grouting method were discussed, and the degree of saturation of the site was concluded to be one of the most appropriate criteria in the applicability of the method.