Results 241 to 250 of about 636,297 (295)

Suction and strength in heavily compressed carbonate sand

open access: yesGéotechnique, 2003
When oven-dried powdered clays are heavily compressed they acquire tensile strength, which is variously attributed to bonding or to suctions in water not evaporated during oven drying. When coarse-grained soils are heavily compressed the grains fracture (Coop, 1990; McDowell & Bolton, 1998).
ATKINSON J, NOCILLA, Alessandra
openaire   +2 more sources

The mechanics of cemented carbonate sands

Géotechnique, 1993
The behaviour of artificially cemented carbonate sand was investigated in triaxial tests at confining pressures of up to 9 MPa. The results show that an important effect of cementing is a reduction in specific volume resulting from the increase in fines content This influences both the stress-strain behaviour and the peak strength at strains beyond ...
M. R. Coop, J. H. Atkinson
openaire   +1 more source

Impact of diameter on carbon nanotube transport in sand

Journal of Colloid and Interface Science, 2013
Carbon nanotubes are the subject of intense research due to their unique properties: light weight, significant strength, excellent conductivity, and outstanding chemical resistance. This has led to their application in a wide variety of industries (e.g., in composite materials).
D M, O'Carroll   +3 more
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Sands and Sand Transport on Palimpsest Carbonate Shelf: ABSTRACT

AAPG Bulletin, 1980
The West Florida Shelf east of Cape San Blas, an End_Page 700------------------------------ area of about 250,000 sq km, is the only major shelf of the continental United States which is presently dominated by carbonate sedimentation. The veneer of sediments which comprises the present surface of the shelf is called the West Florida Sand Sheet.
openaire   +1 more source

THE CARBONATE FRACTION OF BEACH AND DUNE SANDS

Sedimentology, 1967
SUMMARYThe sand size carbonate fractions of beach and dune sands from the southeastern U.S. Atlantic coast were investigated from the standpoint of mineralogy, roundness and size distribution. The carbonate fractions of beach‐dune sands used in this study range in abundance from less than 1% to over 40% and average about 10%. Calcium carbonate is least
ORRIN H. Pilkey   +2 more
openaire   +1 more source

Sand Fracturing With Liquid Carbon Dioxide

SPE Production Technology Symposium, 1982
ABSTRACT The quest for cleaner fracturing fluids has led to the development of sand fracturing using liquid carbon dioxide (CO2) as the proppant carrier fluid. CO2 is handled at the surface as a liquid at approximately 200 psi and −30°F.
Allen T. Lillies, Steven R. King
openaire   +2 more sources

Chain-Soil Interaction in Carbonate Sand

Offshore Technology Conference, 2016
Abstract The design of mooring anchors of Floating LNG systems on Australia's North West Shelf (NWS) is challenging due to the high mooring loads and the seabed which comprises carbonate soils. Anchors with an embedded padeye require engineering of the chain inverse catenary and management of interfaces between the anchor and mooring ...
S. F. Frankenmolen   +2 more
openaire   +1 more source

Strength and carbonation of autoclaved lime – sand concrete with aggregate superfine sand as

Magazine of Concrete Research, 1995
Lime–sand concrete is a new type of free-cement concrete that has good physical–mechanical properties and durability. It is difficult to use superfine sand as an aggregate to produce high-quality lime–sand concrete without suitable production techniques.
L. Wu, X. Peng, J. Yang
openaire   +1 more source

Calcium carbonate in beach sands

Journal of Sedimentary Research, 1933
Abstract The calcium carbonate content of 73 beach and 9 wind-blown sands was estimated by means of leaching with hydrochloric acid. The results of these analyses are tabulated and it is pointed out that north of northern North Carolina calcareous beach sands are the exception, while south of this point they are the rule.
openaire   +1 more source

Breakage and ultimate states for a carbonate sand

Géotechnique, 2013
This paper presents data from ring-shear and one-dimensional compression tests, which have been used to cause breakage under large shear strains and large compressive stresses respectively. A comparison of the behaviour of carbonate sand in monotonic shear and compression is reported, focusing on void collapse, grading properties and particle shape ...
G. MIAO, D. AIREY
openaire   +1 more source

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