Why should add fiber lime plaster
There are two distinct characteristics during the digestion of lime. The first is that the volume expansion is large (about 1 ~ 2.5 times); two, the heat release is large and the heat release rate is fast. Calcined lime with high content of calcium oxide and small impurity content, the aging rate is faster, and the amount of heat and volume is increased.
Lime is divided into quicklime and slaked lime (including slaked lime powder, lime paste, lime milk and lime pulp). Quicklime does not produce strength in a short time after hydration. Quicklime will dissolve when water is added
But the actual reaction is combined with carbon dioxide and water to form carbonic acid, and calcium hydroxide to produce calcium carbonate carbonization effect, the process is from the outside to the inside, but the calcium carbonate crystals formed on the surface of carbon dioxide hinders deeply, also affect the internal water evaporation, so long time only the surface carbonization process. The two main characteristics of lime paste hardening process are: hardening speed is slow; two is volume shrinkage, easy to crack. In order to prevent cracking, fiber reinforcement is needed to prevent cracks in the wall.
