Effects of moisture on the microstructure of cement-based materials. Progress report.

摘要

New information about shrinkage at the microstructural level has been acquired. Experiments and computer analysis serve as a basis for modeling. Some highlights: C-S-H (shrinking phase) shrinks and values for dimensional change are being determined. There may be two types of C-S-H, only one of which shrinks. All other phases serve as restraints to shrinkage. Pores expand on drying and therefore may be a mechanism for the ''size effect'', in addition to microcracks.