Diffusion behavior of chloride in coral aggregate concrete in marine salt-spray environment

2022 ◽  
Vol 316 ◽  
pp. 125878
Author(s):  
Daguan Huang ◽  
Ditao Niu ◽  
Li Su ◽  
Yunhe Liu ◽  
Bingbing Guo ◽  
...  
Keyword(s):  
Salt Spray ◽  
Aggregate Concrete ◽  
Diffusion Behavior ◽  
Marine Salt

scholarly journals Salt, sediments and weathering environments in Bunger Hills

2020 ◽  
Vol 32 (2) ◽  
pp. 138-152 ◽  
Author(s):  
Damian B. Gore ◽  
Michelle R. Leishman
Keyword(s):  
Salt Spray ◽  
Ice Sheet ◽  
East Antarctica ◽  
Sediment Geochemistry ◽  
Rock Weathering ◽  
Calcium Carbonates ◽  
Weathered Rock ◽  
Terrestrial Environments ◽  
Salt Minerals ◽  
Marine Salt

AbstractTerrestrial environments at Bunger Hills, East Antarctica, vary from vegetation-rich, little-weathered rock surfaces retaining glacial polish and striations near the glacier and ice-sheet margins to salty, vegetation-poor, extensively weathered regions near to and downwind of marine bays and inlets. Weathering forms include tafoni and orientated pits, which record former wind directions. Although salts are found all over Bunger Hills, the strongly weathered area is coincident with the distribution of halite (NaCl) and thenardite (Na2SO4), both of which are derived from seawater and marine salt spray. Salts elsewhere in Bunger Hills are either subglacial calcium carbonates or rock weathering products including gypsum (CaSO4⋅2H2O) and a range of rarer minerals. These other salt minerals do not weather rocks and sediment. The distribution of halite and thenardite acts as a major control on the geomorphology, sediment geochemistry and biogeography of Bunger Hills.

Design of novel NiSiAlY alloys in marine salt-spray environment: Part II. Al-Ni-Si-Y thermodynamic dataset

2021 ◽  
Vol 89 ◽  
pp. 186-198
Author(s):  
Kai Xu ◽  
Keke Chang ◽  
Miao Yu ◽  
Dapeng Zhou ◽  
Yong Du ◽  
...  
Keyword(s):  
Salt Spray ◽  
Marine Salt

Tafoni show postglacial and modern wind azimuths that are similar at Bunger Hills

2020 ◽  
Vol 32 (2) ◽  
pp. 130-137 ◽  
Author(s):  
Damian B. Gore ◽  
Michelle R. Leishman
Keyword(s):  
Thermal Stress ◽  
Wind Field ◽  
Salt Spray ◽  
Rock Weathering ◽  
Last Deglaciation ◽  
Lake Chemistry ◽  
The Last Deglaciation ◽  
Sand Particles ◽  
Strong Winds ◽  
Marine Salt

AbstractThe directions of strong winds are important for the distribution of marine salt spray, rock weathering, lake chemistry and the distribution of vegetation in Bunger Hills, a coastal ice-free oasis in East Antarctica. Present-day strong winds (> 10 m s−1) dominantly blow from 118 ± 21 degrees true (°T; ± 1 SD). Orientated tafoni (weathering pits) might form in bedrock surfaces by salt and ice crystallization, thermal stress and saltating sand particles, recording the orientation of a strongly directional wind field since the last deglaciation, which commenced > 30 000 years ago. The orientations of these tafoni, at 101 ± 18°T for 686 measurements at 28 sites, are indistinguishable from the direction of modern-day strong winds (> 10 m s−1), indicating that the orientation of the slope of the ice sheet has been stable throughout the last 10 000 years during the Holocene.

Physical, Chemical, and Crystallographic Characterization of Anodic Coatings on High Strength Aluminum Base Alloys

1976 ◽  
Vol 34 ◽  
pp. 636-637
Author(s):  
R. E. Herfert ◽  
N. T. McDevitt
Keyword(s):  
Sulfuric Acid ◽  
Salt Spray ◽  
High Strength ◽  
Environmental Stability ◽  
Anodic Films ◽  
Sodium Dichromate ◽  
Corrosion Resistant ◽  
Aerospace Applications ◽  
Bond Strengths ◽  
Adhesive Bonded Joints

Durability of adhesive bonded joints in moisture and salt spray environments is essential to USAF aircraft. Structural bonding technology for aerospace applications has depended for many years on the preparation of aluminum surfaces by a sulfuric acid/sodium dichromate (FPL etch) treatment. Recently, specific thin film anodizing techniques, phosphoric acid, and chromic acid anodizing have been developed which not only provide good initial bond strengths but vastly improved environmental durability. These thin anodic films are in contrast to the commonly used thick anodic films such as the sulfuric acid or "hard" sulfuric acid anodic films which are highly corrosion resistant in themselves, but which do not provide good initial bond strengths, particularly in low temperature peel.The objective of this study was to determine the characteristics of anodic films on aluminum alloys that make them corrosion resistant. The chemical composition, physical morphology and structure, and mechanical properties of the thin oxide films were to be defined and correlated with the environmental stability of these surfaces in humidity and salt spray. It is anticipated that anodic film characteristics and corrosion resistance will vary with the anodizing processing conditions.

SALES OF SCOTTISH MARINE SALT, 1714-1832

1986 ◽  
Vol 6 (1) ◽  
pp. 4-17 ◽  
Author(s):  
C.A. Whatley
Keyword(s):  
Marine Salt
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