Thermal Integrity Profiling of Concrete Deep Foundations Data

Thermal Integrity Profiling of Concrete Deep Foundations Data Analysis Session 4

Data Analysis Overview • • Background (aka. theory) Analysis Software Sample Data Sets Time of testing calculations

Single Shaft Heat Signature Higher Temperature Elevated Shaft Concrete Temperature Distribution Elevated Soil Temperature as well

Higher Temperature Single Shaft Heat Signature

Effects of Alignment or Radius Temperature (F) Radial Position (ft) Shaft Radius (ft)

X axis (independent) Y axis

Cage Offset • • Compare Radii T 2 smaller than T 4 T 3 smaller than T 1 Cage must be offset to the SE

TIP Reporter Software

TIP Data Setup • Field data input has limited input requirements • Update field data in TIP computer prior to starting the TIP Reporter software • Most significant – Tube length and stickup – Shaft and cage radius

End Effect Time Factor

Predicting Temperature Rise for time of testing • Must know mix design with detailed cement and flyash reports (can change monthly) • Must know geometry of shaft or other concrete element in question • Must know environmental conditions (e. g. air temp, soil type, soil temp, etc. )

Hydration Energy (Schindler, 2005) Cement Energy Production Total Energy Production

Hydration Energy (Schindler, 2005) Degree of Hydration Rate of Energy Production

Input Parameters (from concrete supplier)

Heat Source Calculator