Evaluation and Adaptation of the Dobrolubov and Romer Method of Microscopic Examination of Hardened Concrete.

摘要

The optical procedures used in Switzerland as a part of the program of quality control of concrete were investigated for usefulness in determining the microstructural parameters and potential durability of concrete. The Swiss procedure uses thin sections impregnated with a fluorescent dye. Quantitative measurements of many parameters were made by a modified point count procedure. It was found possible to distinguish concretes of three different water/cement ratios. The cement content could not be investigated independently without reference to total paste content or to yield. Four general ages of cement hydration were investigated and found to be distinguishable. The effect of aggregate type was investigated and is discussed.