Author: Jay E. Rhoderick
Publisher:
ISBN:
Category : Grout (Mortar).
Languages : en
Pages : 32

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Author: Jay E. Rhoderick
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Author: Jay E. Rhoderick
Publisher:
ISBN:
Category : Grout (Mortar)
Languages : en
Pages : 0

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Book Description

Author: Jay E. Rhoderick
Publisher:
ISBN:
Category : Grout (Mortar)
Languages : en
Pages : 25

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The quality of the contact portland cement grout and surrounding rock will be of prime importance if grout is used to seal boreholes for the isolation of nuclear waste. The contact will need to be tight and relatively impermeable. In the study reported herein, simulated borehole (SBH) specimens were prepared and tested in the laboratory. The specimens consisted of grout poured into a hole in sections of anhydrite rock core that had been grouted into a steel pipe to provide restraint. The study was largely devoted to investigating methods of avoiding artifacts during preparation of these SBH specimens for study of the grout-to-rock contact. The work was conducted and is reported in two parts. The first part was a study in which only large round SBH specimens (about 6 by 6 in.) were used, while the second also included some smaller round SBH specimens (about 3 by 3 in.).

Author: Charles W. Gulick
Publisher:
ISBN:
Category : Grouting (Soil stabilization)
Languages : en
Pages : 30

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Author: Jay E. Rhoderick
Publisher:
ISBN:
Category : Grout (Mortar).
Languages : en
Pages : 28

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Author: C. B. Forster
Publisher:
ISBN:
Category : Rocks
Languages : en
Pages : 116

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Author: Alan D. Buck
Publisher:
ISBN:
Category : Boring
Languages : en
Pages : 48

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A borehole designated ERDA-10 was filled with portland cement based grout in October 1977. The borehole is located in Eddy Co., N. Mex. The hole was filled with grout of four compositions, three of which were similar and made with salt water as mixing water; the upper portion of the hole was filled with a grout made using fresh water as mixing water. During the filling operation, test specimens were cast using these grouts. The deepest plug (plug 1) was cored 48 hours after placement. During the filling operation, test specimens were cast using all four grout compositions. The core from plug 1 and the test specimens were sent to the Structures Laboratory of the U.S. Army Engineer Waterways Experiment Station for physical tests and petrographic examination. They were stored in the laboratory at temperatures ranging from about 23 C to 54 C. Tests and examinations were made at three ages: (a) 23 + or - 8 days, (b) approximately 1 year, and (c) approximately 3 years. This report presents the results of the petrographic examination which included use of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The grouts made with salt water formed tetracalcium aluminate dichloride-10-hydrate (C3A(CaCl2)H10) at the expense of ettringite during continued hydration. The C3A(CaCl2)H10 was already present when the grouts were examined at the early ages (23 + or - 8 days).

Author: Jay E. Rhoderick
Publisher:
ISBN:
Category : Borehole plugging
Languages : en
Pages : 24

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Portland cement grout identified as BCT-1-FF (Bell Canyon Test 1-FF) was used in borehole plugging experiments in the Bell Canyon Tests in Hole AEC-7 at the Waste Isolation Pilot Plant site in New Mexico during September 1979 and February 1980. This grout was made with fresh water. A study of this grout was begun in August 1979 in the laboratory to evaluate the possible effects of temperature, pressure, and storage in fresh water or simulated groundwater (brine) on its phase composition and compressive strength at early ages. Phase composition was determined by X-ray diffraction. Temperatures ranged up to about 150 F and included elevation at a few hours age after mixing; pressure was as high as 1500 psi; specimens were stored in simulated groundwater (brine) or in fresh water. Data from 1 to 90 days showed: Higher temperature accelerated early strength gain. These differences essentially vanished by 90 days age. Hydration products as identified by X-ray diffraction were normal; this indicated that a temperature range of 78 to 153 F was not significant. Pressure did not affect composition. Storage in simulated groundwater (brine) or fresh water had no detectable effect. Since the BCT-1-FF grout mixture contained added sulfate, it formed more ettringite as judged by X-ray diffraction than comparable portland cement mixtures without added sulfate. (Author).

Author:
Publisher:
ISBN:
Category : Radioactive waste disposal
Languages : en
Pages : 196

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