11/10/2023 0 Comments Lime cement plasterQuicklime is very unstable and reacts rapidly with water. This burning process produces calcium oxide which is also known as quicklime. Quicklime (Calcium Oxide) - To make a usable lime product, the raw calcium carbonate needs to be burned at temperatures between 8⁰C. Limestone, Chalk and shells are all sources of calcium carbonate. Lime is the general term used to describe a range of products that use calcium carbonate as a base. Lime plasters and Lime washes are non-toxic.Lime absorbs carbon dioxide as it cures, reclaiming much of the Co2 that is released during manufacture.The manufacture of lime uses less energy than Cement.Masonry and Bricks bonded together with lime mortars can be reused in the future as the lime mortar is easy to clean off. It’s kind to the environment - There are several ways that lime usage is better for the environment than modern cement based building products: It’s mould resistant - Due to the High PH of lime products (12-13), they are a natural biocide, which means they do not promote the growth of mould. The moisture control also helps protect natural materials such as wood used in the construction from getting damp and rotting. Floors constructed with lime-based material, benefit in the same way. Water trapped in the walls is able to escape through evaporation which in turn helps control internal damp and condensation problems. It’s breathable - Lime is vapour permeable, which allows buildings with solid walls to breathe. Subsequently, it is more economical to re-point the lime mortar than it is to remove and replace the damaged masonry. Harder, cement based mortars will not move, the stone or brick has to give, which can lead to ‘blown’ faces and cracked masonry. Mortars and renders made from lime do not set too hard, so In the event of this expansion, it is the lime mortar that will be affected, not the brick or stone. Frost damage in walls is the result of water held in the masonry expanding and contracting as it freezes and then thaws. It’s flexible - Unlike modern cement based products, lime has a certain amount of flexibility, allowing it to cope with a building’s movements, without cracking. Invaluable in the restoration of older buildings, and equally beneficial to new-build projects, it is the ideal choice for many building applications. …It’s Flexible, it’s Breathable, it’s mould resistant, it’s kind to the environment and it looks great.
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