AN EXPERIMENTAL INVESTIGATION ON IMPROVING THE MEDIUM AND LATE-AGE COMPRESSIVE STRENGTHS OF CLASS G OIL WELL CEMENT

Document Type: Research Paper

Authors

1 Cement Research Center, School of Chemical Engineering, Iran University of Science and Technology Tehran, Iran

2 School of Chemical, Petroleum, and Gas Engineering, Semnan University, Semnan, Iran

Abstract

In this study, the effects of particle size distribution improvement and dense packing techniques on the 28- and 90-day compressive strengths of class G oil well cement have been investigated. It was observed that limited improvements in the particle size distribution of cement (regarding industrial possibilities) cannot result in a significant increase in 28- and 90-day compressive strengths. Also, in the application of the dense packing technique, silica fume and limestone powders with the grain size less than 45 micrometers cannot be utilized as substitutes for cement, because the addition of these materials simultaneously leads to the shortening of the setting times. The utilization of quartz powder as a filler exhibits partial pozzolanic properties at optimum substitution percentages, i.e. around 6 to 10% by weight; however, it can result in an almost 7% increase in the 28-day compressive strength of the hardened paste of the cement without any considerable effects on its setting times.

Keywords


[1]    Andersen P. J., Johansen V., “Particle Packing and Concrete Properties, American Ceramic Society”.1995, 12, 111-146.

[2]    Heikal M., Diadamony H. E., and. Morsy M. S., “Limestone-filled Pozzolanic Cement”, Cem. & Concr. Res. 2000, 30, 1827-1834.

[3]    Bonavetti V., Donza H., Menendez G.,. Cabera O., and Irassar E. F.,” Limestone Filler Cement in Low W/C Concrete:  A Rational Use of Energy”, Cem. & Concr. Res. 2003, 33, 865-871.

[4]    Pera J., Husson S., and Guilhot B., “Influence of Finely Ground Limestone on Cement Hydration”, Cem. & Concr. Comp. 1999, 21, 99-105,.

[5]    Svermova L., Sonebi M., and Bartos P. J. M., “Influence of Mix Proportions on Rheology of Cement Grouts Containing Limestone Powder”, Cem. & Concr. Comp. 2003, 25, 737-749.

[6]    Saout G. L., Le´colier E., Rivereau A., and Zanni H., “Chemical Structure of Cement Aged at Normal and Elevated Temperatures and Pressures” Part I. Class G Oilwell Cement, Cem. & Concr. Res. 2006, 36, 71-78.

[7]    Hodne H., Saasen A., O'Hagan A. B., and Wick S. O., “Effects of Time and Shear Energy on the Rheological Behavior of oil Well Cement Slurries”, Cem. & Concr. 2000, Res., 30, 1759-1766.

[8]    Niu Q., Feng N., Yang J., and Zheng X., “Effect of Superfine Slag Powder on Cement Properties”, Cem. & Concr. Res. 2002, 32, 615-621.

[9]    Glasnovi A. and Hraste M., “The Grinding Equation in the Investigation of the Coarse Dispersing System of Cement”, Cem. & Concr. Res. 1982, 12, 415-424.

[10] Agawa K., Uchikawa H., Takemoto K. and Yasui I. V.,” The Mechanism of the Hydration in the System C3S Pozzolans”, Cem. & Concr. Res. 1980, 8, 683-696.

[11] Davraz M. and Gunduz L., “Engineering Properties of Amorphous Silica as a New natural pozzolan for use in concrete”, Cem. & Concr. Res. 2005, 35, 1251-1261.