Polycarboxylate Polymer Modified Cement Grout and Grouted Sand Behavior-Video

Video Transcription

Video Summary

The presentation examines how polycarboxylate ether (PCE), a water-reducing polymer, affects cement grouts and grouted sand. Tests explored water-to-cement ratios, curing temperatures, rheology, and sand particle sizes. Adding a small amount of PCE increased yield stress and viscosity, so higher pressure was needed to inject the grout. However, it substantially improved long-term grouted-sand strength, with the coarsest sand approaching concrete-like strength. The speaker also compared predictive models, which represented the material behavior reasonably well. Overall, PCE offers significant strength and durability benefits, balanced against more demanding pumping requirements.

Keywords

polycarboxylate ether

cement grout

grouted sand

rheology

strength development