Method for placing concrete for construction of a master concrete structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 8, 1997
Grant Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Nov 30, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for placing concrete on a rock foundation to construct a massive concrete structure, such as a dam, a bridge pier or a foundation of a building, precludes development of cracks in the concrete by thermal stress. According to the method, stress exceeding an allowable limit for crack initiation and propagation is controlled by the following steps: (a) determining a temperature influence function to enable calculation of a thermal stress distribution under a temperature change by using results of a numerical analysis; (b) identifying a portion of the structure at which a crack will develop, by using said temperature influence function and a function of thermal change in said structure; (c) partially heating/cooling the vicinity of the identified portion and redistributing the excess stress predicted to cause cracking in the structure; and (d) reducing thermal stress in the structure by transmitting excess heat generated in the structure to another portion of the structure, at a location at which crack development is not predicted. Preferably, a heat pump system is used for transferring the excess generated heat to another portion of the structure to control the excess stress.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully