Proceeding of the 2018 DFI-EFFC International Conference on Deep Foundations and Ground Improvement, Rome, Italy, (DFI, EFFC)
Cement and Superabsorbent Polymer to Solidify Slurry
Jinyuan Liu, Associate Professor and Ali Ahmad, Civil Engineering
This paper presents an experimental investigation of the geotechnical properties of cement and superabsorbent polymer (SAP) solidified slurry, particularly the unconfined compressive strength (UCS) and consolidation properties. The ultimate goal of this research is to apply SAP in treating soils with high water contents, like hydro-excavation slurry or mine tailing. Different dosages of cement and SAP are used in this study to solidify and strengthen the treated samples. The samples are cured before the tests for different curing times. For this study, the constant rate of strain (CRS) consolidation tests is used to evaluate the compressibility of solidified slurry. Based on the results, it is found that SAP can solidify slurry quickly and cement increases the strength of treated samples over time. There is an optimum SAP dosage issue. SAP inside the mixture behaves as a water resource to facilitate the hydration process of cement, while overdosage of SAP will weaken the bonding between particles inside the samples. The test results confirm that SAP is a promising material for the ground improvement of problematic soils with a high-water content.
|article #3037; publication #1040 (ROME-2018)|