The Influence of Water/Binder Ratio on the Mechanical Properties of Lime-Based Mortars with White Portland Cement

Protecting the built cultural heritage is one of most important tasks in architectural practice. The process repair time-consuming, weather-dependent, and sensitive to materials applied. Introducing new historic building order decrease time needed for repair, brings some risk preservation process. common material masonry lime mortar. Adding cement mortar can improve mechanical properties speed up high amount may increase strength, but ductility permeability mortar, causing damages protected buildings. An strength with smallest amounts demands optimization water content mixture. Tests were performed investigate influence water/binder (w/b = water/(lime + cement) ratio on permeability. air-entraining agent (AEG) was introduced Results confirmed that adding small (20% by weight) decreasing w/b ratio, improves almost negligible addition very AEG did not nor