METHOD AND APPARATUS FOR ASSESSING SHEAR STRENGTH DEVELOPMENT IN CEMENTITIOUS MATERIALS

摘要

A method of assessing shear strength development in cementitious material involves measuring electrical resistance of a sample of cementitious material during hydration to establish a correlation between electrical resistance and shear strength of the hydrating sample, then applying the cementitious material in accordance with a desired purpose and measuring electrical resistance of the applied cementitious material in situ during hydration. The measured electrical resistance of the applied cementitious material and the established correlation is used to assess the shear strength of the applied hydrating cementitious material. Electrical resistance is measured by a probe (10) having a first electrode (14) and two or more second electrodes (16). The second electrodes (16) are spaced an equal distance from the first electrodes (14). An electrical power (20) source connected between the first electrode (14) and each of the second electrodes (16).