Frost Resistance and Shrinkage Characteristics of Soil Stabilized by Carbide Slag and Coal Gangue Powder

Abstract

With the increase of expressway construction in seasonal frozen soil region, the freeze-thaw problem of subgrade soil has attracted more and more attention [...]

Mechanical Response and Deterioration Mechanisms in Freeze–Thaw Environments for Crushed Stone Stabilized with Industrial Solid Waste

“…Combined with the previous research conclusions, it can be seen that under the condition of freeze-thaw cycles, the strength of the mixture will decrease with the increase in the number of freeze-thaw cycles [22][23][24][25], which is consistent with the conclusions of this study. According to the mechanism analysis part of this study, this kind of strength damage mainly comes from the increase in porosity and the change in the pore size distribution in the mixture after freeze-thaw cycles.…”

“…[25] The previous research shows that although the types of geopolymer and the types of stabilized materials are different, in general, the addition of an appropriate amount of geopolymer can ensure the road performance of geopolymer-stabilized road materials, including mechanical properties, frost resistance and so on. In addition, due to the related characteristics of geopolymer materials, the geopolymer-stabilized mixture has better frost resistance than the cement-stabilized mixture [23], which is basically consistent with the previous research in Table 14.…”

“…The interior of the sample becomes loose, and the fracture mode is crystal fracture. Zhao Q et al [23] used NaOH and Na 2 SiO 3 as alkali activators and used carbide slag and coal gangue as raw materials to prepare cementitious materials for highway subgrade construction. The test results show that the material has good frost resistance.…”