Paper: Surface Pipe Cement Given High Early Strength With New Cement Additive

A newly developed cement additive provides excellent compressive strengths for lightweight, filler-type cement compositions used for cementing surface pipe. Cement compositions incorporating the new additive will. Meet Texas Railroad Commission strength requirements for surface pipe and critical zone applications. Cement compositions mixed at densities of 11.6 to 12.2 lb/gal developed in excess of the required 250 psi compressive strength in 24 hours for a surface pipe and a composition mixed at 12.4 lb/gal developed 1200 psi in less than 72 hours for critical zone applications. Slurries containing this additive have also shown good fluid loss properties, accelerated setting times, and high temperature stability. Laboratory test results as well as field results from cement compositions typically used in surface pipe, critical zone, filler cement, and high temperature applications are presented.