Compressive strength of concrete and mortar containing fly ash

Patent · Thu Jan 01 00:00:00 EST 1998

OSTI ID:872062

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. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specification required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs.

• 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 5853475
• OSTI ID: 872062
• Country of Publication: United States
• Language: English

Related Subjects

compressive
strength
concrete
mortar
containing
fly
ash
relates
hardenable
mixtures
comprising
cement
construction
method
predicting
mixture
planning
achieve
time
period
relevant
specific
embodiment
formula
provided
accurately
predicts
180
days
examples
15
25
replacement
capable
meeting
design
specification
required
building
highway
materials
significantly
reduce
costs
mortar containing
comprising cement
significantly reduce
mixtures comprising
hardenable mixture
specific examples
compressive strength
fly ash
time period
specific embodiment
containing fly
hardenable mixtures
mixtures containing
specific example
accurately predict
/106/73/264/