soft soil is stabilized by slag cementitious materials

which can not only reuse industrial wastes

but also reduce amount of cement. Sandy soil and clay soil are stabilized by slag cementitious materials. Result shows that the stabilization effect of alkali-slag cementitious materials is better than cement and lime. The unconfined compressive strength of soils added 9 % slag cementitious materials after curing 28 days reaches 2.0 MPa

which are higher than soils added 15 % cement; softening coefficient of stabilized soils after curing 28 days are almost higher than 90 %; the CBR of stabilized clay soil outclasses that of the lime-clay soil with the same mixing ratio. XRD analysis shows that the high-strength

insoluble mineral produced due to hydration of slag cementitous materials is the main cause for better effect of soil. All those show that alkali-slag cementitious material is an ideal solidifying agent for soil stabilization.