Method for reducing autogeneous shrinkage of super high strength concrete
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jul 6, 2006
app pub date -
Jun 29, 2004
filing date -
Jul 4, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method is provided for reducing autogenous shrinkage in ultra high-strength concrete in the blending of ultra high-strength concrete with a compression strength in excess of 100 N/mm.sup.2, comprising the steps of: replacing 30 vol. % or less of coarse aggregate with artificial lightweight aggregate, and blending in a expansive additive in the amount of 30 kg/m.sup.3 of concrete and/or a shrinkage reducing agent in the amount of 4 wt. % or less per unit weight of binder, and thereby bringing the amount of autogenous shrinkage at a curing age of 91 days to 0-600 .mu.m/m. The artificial lightweight aggregate used has water absorption of 5% or greater and 20% or less, a collapse load of 1000-2000 N and a bone-dry density of 1.4-2.0 g/cm.sup.3.
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