Slurry Consistency and In-situ Synchrotron X-ray Diffraction during the Early Hydration of Portland Cements with Calcium Chloride

Journal Article · Tue Jul 08 00:00:00 EDT 2008 · J. Am. Ceram. Soc.

DOI:https://doi.org/10.1111/j.1551-2916.2007.01806.x· OSTI ID:1007579

Jupe, A C; Wilkinson, A P; Luke, K; Funkhouser, G P ^[1]

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1. Halliburton

Class A and H oil well cements are compared at 25 and 50 C with 0%, 1%, 2%, and 4% CaCl{sub 2}. Up to 4% CaCl{sub 2} accelerated Class A thickening, but 4% led to slower thickening than 2% for Class H. C{sub 3}S hydration in the two cements responded differently to CaCl{sub 2}. CaCl{sub 2} always accelerated aluminate hydration. For Class A, CaCl{sub 2} accelerated early Ca(OH){sub 2} precipitation, but sometimes reduced the amount at longer times. This may be coupled to C-S-H gel composition changes. For Class H, Ca(OH){sub 2} precipitation changes nonlinearly with CaCl{sub 2} concentration. Ettringite to monosulfate conversion and Friedel's salt formation were sometimes seen.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
• Sponsoring Organization: USDOE
• OSTI ID: 1007579
• Journal Information: J. Am. Ceram. Soc., Vol. 90, Issue (8) ; 08, 2007; ISSN 0002-7820
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

02 PETROLEUM
43 PARTICLE ACCELERATORS
ALUMINATES
CALCIUM CHLORIDES
CEMENTS
HYDRATION
OIL WELLS
PORTLAND CEMENT
PRECIPITATION
SYNCHROTRONS
X-RAY DIFFRACTION