What is TDR?
TDR is a low cost, full range ground subsidence detection network technology proven by the Federal Highway Administration for monitoring movement in landslides and ground subsidence.
Verification methods for compaction grouting after placement have traditionally relied on grout take records and achieved pressures, CPT or SPT results.
The CPT and SPT method only measure relative soil strength and not ground movement. These methods can miss the areas of subsurface grouting.
TDR is able to measure the occurrence and severity of ground movement after remedial efforts.
TDR Applied to Compaction Grouting Projects
- Installed by trained personal and monitored by GET Group electrical engineers
- Can be installed into only the angled grout holes for cost effective installation
- System is robust and will last for years
- TDR baseline is established at the time of installation
- Measurements can be retaken at any time for litigation or proof of effectiveness of the grout program
TDR Benefits to Homeowner & Service Firms
- Long term performance monitoring of grout project
- Results can be used to insure grout placement was effective
- Claims of improper ground stabilization can be addressed with evidence
- Peace of mind & increased resale value for homeowner
- Reduced false claims and warranty assurances for insurance, engineering, and grouting firms