Compressive strength of concrete and mortar containing fly ash
Patent
·
OSTI ID:504939
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 specifications required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs. 33 figs.
- Research Organization:
- New Jersey Institute of Technology
- DOE Contract Number:
- FG22-90PC90299
- Assignee:
- New Jersey Inst. of Tech., Newark, NJ (United States)
- Patent Number(s):
- US 5,624,491/A/
- Application Number:
- PAN: 8-246,875
- OSTI ID:
- 504939
- Country of Publication:
- United States
- Language:
- English
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