HTR Grout

Five Star HTR Grout is a unique cement based grout for supporting equipment and structural baseplates in high temperature environments. Five Star HTR Grout can be poured into place, gains strength rapidly and can be exposed to 1000°F (538°C) in three hours and up to 2400°F (1316°C) after a 7-day curing procedure. Five Star HTR Grout shows positive expansion when tested in accordance with ASTM C 827. Five Star HTR Grout meets the performance requirements of ASTM C 1107-02 and CRDC 621-93 specs for nonshrink grout grades A, B, and C.


  • Thermal shock resistant
  • Resistant to sulfates
  • High temperature resistance
  • High early strengths
  • Does not fall below original placement volume per ASTM C 1107


  • Areas of high temperature exposure
  • Rapid turnaround during shutdowns
  • Thermal cycling up to 2400°F (1316°C)
  • Cokers
  • Kilns
  • Furnaces
  • Boilers
  • Forges