Lime itself is not water resistant, but some well constructed lime soil has a certain water resistance. What do you think may be the reason?
The calcium hydroxide in contact with the air will also react with carbon dioxide in water and air, and the surface of the membrane will organize the water to enter. Therefore, lime dust will have better strength and water resistance
Lime and clay mixing according to a certain proportion, can be made by lime soil, after compaction can increase the density of calcium hydroxide and silica clay particles on the surface of the three and two aluminum oxide with lime in reaction to produce insoluble calcium silicate and calcium aluminate hydration of clay particles, speak up transfer;