Abstract
Abstract
Measuring the durability of lime stabilized soils is one of the main concerns in soil stabilization, since there is no standard procedure for this case. This research studies the durability of lime stabilized fine grained soils using the slake durability device.
The effects of curing time and temperature, molding moisture contents, test duration time, and the effect of drying or wetting the samples before slaking, on the durability of gypseous soil (34% gypsum) A and clayey soil B were studied. The results showed that the increase of molding moisture content decrease the weight loss for both soils, also it is found that soil A gave higher weight loss than soil B. Increasing the curing temperature or curing time decreases the loss weight due to pozzolanic reaction.
On the other hand, results indicated that the specimens wetted before slaking gave higher weight loss than specimens dried before slaking.
Finally, a linear relationship was obtained between test duration time and weight loss of soils. It is found that curing for 2 days at 25°C is approximately equivalent to curing for (4-13.5) days and (3.4-13.5) days at 25ºC for soil A and B respectively.
Key words: durability, lime stabilization, slake durability, gypseous soils.
