Hydrated lime takes the guesswork out of mixing mortar. You can buy hydrated lime at building supply businesses that sell cement, mortar, plaster and other building materials.

How to Mix Mortar Mortar is basically a mixture of water, sand, cement, and sometimes hydrated lime. However, the key is to use the proper ratio of cement to sand for your specific project.

If your house is over 50 years old, the mortar probably had a higher lime content than the high-cement-ratio mortars used today. Add some lime to your mortar mix to more closely match your old mortar.

Using hydrated lime in a concrete mix reduces the amount of Portland cement by 60 to 90 percent.

Where once pozzolanic material like volcanic ash was the key, turns out the secret to the durability of Roman concrete was quicklime and hot mixing.

The pre-mixed blend of sand, lime, cement, admixtures and silicone is waterproof and hard-wearing, and the inclusion of silicone has the advantage of reducing lime bloom on site.

Researchers have turned to an ancient Roman concrete recipe to develop more durable concrete that lasts for centuries and can potentially reduce the carbon impact of the built environment. To ...