scholarly journals Evaluation of salt resistance of concrete combined with chloride-ion immobilizer and expansive additive

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2019 ◽  
Author(s):  
Shinya Ito ◽  
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Akihiro Hori ◽  
Takeshi Iyoda ◽  
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...  
2010 ◽  
Vol 163-167 ◽  
pp. 3122-3127 ◽  
Author(s):  
Xiao Lu Yuan ◽  
Bei Xing Li ◽  
Shi Hua Zhou

The effect of mineral admixtures and air-entraining agent on freezing-thawing and de-icing salt resistance of concrete has been studied. Concrete specimens made with ordinary Portland cement or ordinary Portland cement incorporating fly ash with the replacement of 10% or 20%, or 0.7/10000 air-entraining agent and fly ash with the replacement of 20%, or ground blast furnace slag with the replacement of 15% or 30%, were made and exposed to 500 cycles of freeze-thaw and de-icing salt environment. Concrete properties including loss of mass, relative dynamic elastic modulus, compressive strength, flexural strength and chloride ion diffusion coefficient were measured. Phase composition of samples was determined by means of x-ray diffraction (XRD). Results indicate that concrete exposed to freeze-thaw and de-icing salt environment is subjected to both physical frost action and chemical corrosion. Incorporation of mineral admixtures and air-entraining agent possesses more effect on internal deterioration, mechanical properties and permeability of concrete than on the scaling of concrete.


2019 ◽  
Vol 72 (1) ◽  
pp. 151-157
Author(s):  
Shinya ITO ◽  
Akihiro HORI ◽  
Rikuma EKI ◽  
Takeshi IYODA
Keyword(s):  

Alloy Digest ◽  
2012 ◽  
Vol 61 (2) ◽  

Abstract NAS 825 is a corrosion-resistant nickel alloy that has resistance to both oxidizing and reducing environments, and with 42% nickel, the alloy is very resistant to chloride-ion stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-694. Producer or source: Nippon Yakin Kogyo Company Ltd.


Alloy Digest ◽  
2011 ◽  
Vol 60 (2) ◽  

Abstract Sandmeyer alloy 825 is a nickel alloy high in chromium and molybdenum with good corrosion resistance and ductility. The alloy has enough nickel (42%) to be relatively free from chloride-ion stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-687. Producer or source: Sandmeyer Steel Company.


2020 ◽  
Author(s):  
Askar Kholliyev ◽  
Umida Norboyeva ◽  
Khamida Adizova
Keyword(s):  

2013 ◽  
Vol 30 (8) ◽  
pp. 909
Author(s):  
Bo HONG ◽  
Kun XU ◽  
Mingyao ZHANG ◽  
Kang XU ◽  
Ying TAN ◽  
...  

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