Sulfate and acid resistant concrete and mortar

Patent · Tue Jun 30 00:00:00 EDT 1998

OSTI ID:871656

Liskowitz, John W ^[1]; Wecharatana, Methi ^[2]; Jaturapitakkul, Chai ^[3]

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1. Belle Mead, NJ
2. Parsippany, NJ
3. Bangkok, TH

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise cementitious materials and a fine aggregate. The cementitous materials may comprise fly ash as well as cement. The fine aggregate may comprise fly ash as well as sand. The total amount of fly ash in the hardenable mixture ranges from about 60% to about 120% of the total amount of cement, by weight, whether the fly ash is included as a cementious material, fine aggregate, or an additive, or any combination of the foregoing. In specific examples, mortar containing 50% fly ash and 50% cement in cementitious materials demonstrated superior properties of corrosion resistance.

• Research Organization: New Jersey Institute of Technology (Newark, NJ)
• DOE Contract Number: FG22-90PC90299
• Assignee: New Jersey Institute of Technology (Newark, NJ)
• Patent Number(s): US 5772752
• OSTI ID: 871656
• Country of Publication: United States
• Language: English

Related Subjects

sulfate
acid
resistant
concrete
mortar
relates
hardenable
mixtures
comprising
cement
fly
ash
construction
applications
demonstrate
significant
levels
resistance
maintaining
acceptable
compressive
strength
properties
containing
comprise
cementitious
materials
fine
aggregate
cementitous
sand
total
amount
mixture
ranges
60
120
weight
included
cementious
material
additive
combination
foregoing
specific
examples
50
demonstrated
superior
corrosion
mortar containing
comprising cement
cementitious material
mixtures comprising
hardenable mixture
specific examples
total amount
corrosion resistance
compressive strength
fly ash
containing fly
hardenable mixtures
specific example
acid resistant
cementitious materials
strength properties
/106/264/