| Characterization of Four Class H High Sulfate-Resistant Portland Cements. |
SEP 1985 |
|
| Authors:
A. D. Buck; R. E. Reinhold; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
 | As part of the materials selection process for underground repository sealings of nuclear wastes, all available Class H high sulfate-resistant (HSR) portland cements that were commercially available in the United States in 1981 were obtained for testing and evaluation. Four such cements were found. The Class H designation is that used by the American Petroleum Institute; the HSR type is similar to a Type V portland cement as described in ... |
|
| Characterization of Several Plasters and One Retarder for Repository Sealing Mixtures. |
SEP 1985 |
|
| Authors:
A. D. Buck; J. P. Burkes; R. E. Reinhold; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| Samples of plasters (i.e., calcium sulfate hemihydrate, CaSO4.1/2H20) from six sources and one plaster retarder from a different source were obtained and characterized by a combination of chemical and physical testing and by petrographic examination. The petrographic examination included X-ray diffraction, optical microscopy, differential thermal analysis, and scanning electron microscopy procedures. The intent of this work was twofold. One purpose was to determine if plaster per se could be used ... |
|
| Development of a Sanded Expansive Salt Grout for Repository Sealing Application |
AUG 85 |
|
| Authors:
A. D. Buck; J. A. Boa Jr.; D. M. Walley; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| A sanded version of the basic BCT 1-F expansive salt grout was developed by the US Army Engineer Waterways Experiment Station in early 1983 for use in a test by Terra Tek in the Fall of 1983 in Salt Lake City. This grout is known as TT83. Initial laboratory tests showed this mixture had adequate workability, impermeability, strength, and positive volume change. There were problems with flow when this material ... |
|
| Thermal Stability of Certain Hydrated Phases in Systems Made Using Portland Cement |
AUG 85 |
|
| Authors:
A. D. Buck; J. P. Burkes; T. S. Poole; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| As part of the study of hydraulic-cement system for use in possible underground isolation of nuclear wastes, this study was made to determine the temperature stability of ettringite and chloroaluminate. Either or both of these phases may be expected in a hydraulic cement system depending on the presence of salt. (NaCl). The study of ettringite was made using 15 mixtures that contained portland cement, plaster, 2 levels of water, and ... |
|
| Development of Two Candidate Concrete Mixtures (Salt, Nonsalt) for Repository Sealing Applications |
AUG 85 |
|
| Authors:
A. D. Buck; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| Two concrete mixtures were developed in 1983 for possible use in nuclear waste repository sealing application. The salt concrete was basically an adaptation of BCT 1-F salt grout made by adding aggregate. The nonsalt mixture was a similar adaptation of nonsalt BCT 1-FF grout. The basic requirement was continued workability after 2 hr of intermittent mixing. Tests of hardened specimens included strength, modulus of elasticity (E), permeability, coefficient of linear ... |
|
| Development of a Sanded Nonsalt Expansive Grout for Repository Sealing Application. |
AUG 1985 |
|
| Authors:
A. D. Buck; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| A sanded version of expansive BCT 1-FF nonsalt grout was developed for use in the 1984 Terra Tek test in Salt Lake City, Utah, For that reason this grout is also known as TT84. Ability to maintain workability (flow) over a 2-hr time period was required in addition to adequate strength, adequate expansion, and low permeability of the hardened material. Laboratory testing also included sealing and exposure to elevated temperature ... |
|
| Cement Composition and Concrete Durability in Sea Water |
DEC 84 |
|
| Authors:
A. D. Buck; K. Mather; B. Mather; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| The effects of cement composition on durability of concrete in sea water were investigated. The separate and combined effects of alkali-silica reaction and sulfate attack were evaluated both in the laboratory and using concrete specimens from 16 mixtures exposed in warm sea water at St. Augustine, Florida. Three mixtures were made that were susceptible to both alkali-silica reaction and sulfate attack, three that should not manifest either reaction, three susceptible ... |
|
| Workability of Fluid Hydraulic Cement Systems Containing Salt |
JUN 1984 |
|
| Authors:
A. D. Buck; J. A. Boa Jr.; D. M. Walley; BATTELLE MEMORIAL INST COLUMBUS OH
|
| It is shown by reference to the literature that salt (NaCl) must be used in the mixture when placing a fluid hydraulic cement mixture in contact with salt. If this is not done, a void will be created at the contact of the salt and the cement-based mixture due to solution of salt by mixing water in the mixture. The addition of salt (NaCl) may affect setting time of the ... |
|
| Alkali-Silica Reaction in Concrete in a North Dakota Highway |
FEB 1984 |
|
| Authors:
A. D. Buck; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| The North Dakota State Highway Department found cracking in concrete on Interstate Highway 94 east of Dickinson in about 1979 when the concrete was about 15 years old. While the cracking was primarily in the eastbound lanes where high-alkali portland cement had been used, it had the appearance of 'D' cracking. The fine aggregate was local natural sand with a good service record, while the coarse aggregate was a mixed ... |
|
| Modification of Bell Canyon Test (BCT) of 1-FF Grout |
SEP 1983 |
|
| Authors:
A. D. Buck; J. E. Rhoderick; J. P. Burkes; K. Mather; R. E. Reinhold; SANDIA NATIONAL LABS ALBUQUERQUE NM
|
| Bell Canyon Test (BCT) 1-FF grout was developed as a candidate material for use in repository sealing applications and was actually used in two field tests in New Mexico. This grout and modifications of it were made in the laboratory and tested or examined for workability, compressive strength, restrained expansion, permeability, phase composition, and microstructure. Most of these were done to an age of 1 year. Compressive strength and expansion ... |
|
| INVESTIGATION OF CONCRETE IN EISENHOWER AND SNELL LOCKS ST. LAWRENCE SEAWAY. |
JUL 1967 |
|
| Authors:
A. D. Buck; B. Mather; H. T. Thornton Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
|
| It is concluded that the deterioration of the concrete that has manifested damage in certain parts of the Eisenhower Lock is the result of the exposure conditions to which it was subjected at a time when it had not attained sufficient maturity to resist these conditions. The exposure conditions are more severe than those to which any previous mass concrete structure is known to have been exposed. The severity results ... |
|
| DEVELOPMENT OF METHODS OF TESTING AGGREGATE LARGER THAN 1-1/2 INCH. |
DEC 1966 |
|
| Authors:
R. L. Curry; A. D. Buck; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
|
| The investigation involved the study of concrete aggregate from seven different sources. The tests included petrographic analysis, sieve analysis, specific gravity, absorption, soft particles, Los Angeles abrasion, flat and elongated particles, magnesium sulfate soundness, and freezing and thawing in concrete. The objective of the study was to evaluate existing and new test methods and to determine if existing test methods for aggregates smaller than a 1-1/2-in. sieve. provide accurate data ... |
|
| Project DANNY BOY Petrographic Examination and Physical Tests of Selected Cores, |
JAN 1963 |
|
| Authors:
A. D. Buck; G. V. Marler; K. L. Saucier; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
|
| Project DANNY BOY was an excavation project for the PLOWSHARE Program and consisted of the detonation of a low-yield nuclear device in the basalt mesa in Area 18 at the Nevada Test Site of the U. S. Atomic Energy Commision. The primary purpose in the tests was to give data on: amount, distribution, and decay of radioactivity released by a nuclear cratering detonation buried near optimum depth-of-burst in a hard ... |
|
Reports by Author
