What is the role of lime in cement mortar?
Mortar made from cement, fine aggregate and water, as well as lime, active admixture or admixture that is added as needed, is divided into cement mortar and cement mortar. Usually the 1:3 cement mortar is used in conjunction with 1 units and 3 units of weight weight of cement sand, actually neglected the composition of water, generally about 0.6 proportion, which should be 1:3:0.6, the density of 2000Kg/m3 cement mortar
To increase the workability of the mortar slurry, increase physical strength, prevent slurry segregation and reduce the bleeding rateThe addition of lime in general mortar can stimulate the activity of fly ash and play a positive role in the later strength growth of mortar.But if it is only cement, water mixed cement, adding lime in the slurry, this does not know what effect can play. Because lime is a kind of air hardening material, the use of lime should be eliminated in general mortar, but in some special mortar, the function of lime is more important, such as synchronous grouting slurry used in shield construction.
Lime added in cement mortar can stimulate the activity of fly ash and play a positive role in the later strength growth of mortar.
