Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Reexamination Certificate
2004-01-22
2009-02-03
Marcantoni, Paul (Department: 1793)
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
C106S742000, C106S726000, C106S727000, C106S823000, C106SDIG002
Reexamination Certificate
active
07485184
ABSTRACT:
A method of producing cementitious mixtures containing fly ash as one of the cementitious components, under air entrainment conditions. The method involves forming a mixture comprising water, cement, fly ash, optionally other cementitious materials, aggregate, conventional chemical admixtures, and an air entrainment agent and agitating the mixture to entrain air therein. Additionally, at least one sacrificial agent is also included in the mixture. The sacrificial agent is a material or mixture of materials that is not required to act as an air entrainment agent but interacts preferentially with components of the fly ash that otherwise neutralize, repress or depress the activity of the air entrainment agent. The invention includes cementitious mixtures and hardened concretes resulting from the method and fly ash treated with sacrificial agent, or air entrainment agent/sacrificial agent combinations, and processes for selecting suitable sacrificial agents.
REFERENCES:
patent: 4257815 (1981-03-01), Hauser
patent: 4453978 (1984-06-01), Okimura et al.
patent: 4547223 (1985-10-01), Goto et al.
patent: 5110362 (1992-05-01), Hoarty et al.
patent: 5326396 (1994-07-01), Abdelrazig et al.
patent: 5326397 (1994-07-01), Abdelrazig et al.
patent: 5389143 (1995-02-01), Abdelrazig et al.
patent: 5556460 (1996-09-01), Berke et al.
patent: 5603760 (1997-02-01), Berke et al.
patent: 5604273 (1997-02-01), Kerkar et al.
patent: 5622558 (1997-04-01), Berke et al.
patent: 5654352 (1997-08-01), MacDonald
patent: 5938835 (1999-08-01), Shawl et al.
patent: 6136089 (2000-10-01), Hurt et al.
patent: 6166119 (2000-12-01), Matsuo et al.
patent: 6277189 (2001-08-01), Chugh
patent: 6599358 (2003-07-01), Boggs
patent: 6626663 (2003-09-01), Zhu
patent: 6670415 (2003-12-01), Jardine et al.
patent: 6706111 (2004-03-01), Young
patent: 6712900 (2004-03-01), Wombacher et al.
patent: 6875266 (2005-04-01), Naji et al.
patent: 2004/0129180 (2004-07-01), Boggs
patent: 2004/0144287 (2004-07-01), Tardif et al.
patent: 2004/0200389 (2004-10-01), Young
patent: 19528912 (1996-02-01), None
patent: 2292141 (1996-02-01), None
patent: 56-22665 (1981-03-01), None
patent: 56022665 (1981-03-01), None
patent: 05024900 (1993-02-01), None
patent: 08337449 (1996-12-01), None
patent: 2002234763 (2002-08-01), None
patent: WO 85/01500 (1985-04-01), None
“Clean Coal Technology Glossary,” Illinois Clean Coal Institute Energy Research for a Cleaner Environment, www.icci.org/glossary.html, retrieved Jan. 9, 2008.
“Definition of Fly Ash,” Britannica Online Encyclopedia, http://www.britannica.com/dictionary?book=Dictionary&va=fly%20ash&query=fly%20ash, retrieved Jan. 9, 2008.
“Glossary of Environmental Terms,” San Bernardino Country Fire Department, Hazardous Materials Division, www.sbcfire.org/hazmat/env—terms.asp, updated Oct. 1, 2001, retrieved Jan. 10, 2008.
“Terms of Environment: Glossary, Abbreviations, and Acronyms,” U.S. Environmental Protection Agency, www.epa.gov/OCEPAterms/fterms.html, updated Oct. 2, 2006, retrieved Jan. 10, 2008.
“Air entraining agent for concrete-comprises an anionic surfactant and a glycol ether,” Section Ch, Week 198117, Derwent Publications Ltd., London, GB, 1981.
Berke et al., “Improving concrete performance with shrinkage-reducing admixtures,”ACI, SP-217-3, 2003.
Ribeiro et al., “Effectiveness of shrinkage-reducing admixtures on different concrete mixtures,”ACI, SP-217, 2003.
Roncero et al., “Evaluation of the influence of a shrinkage reducing admixture on the microstructure and long-term behavior of concrete,”Proc. Seventh CANMET/ACI Intnl. Conf. on Superplasticizers and Other Chemical Admixtures in Concrete(Berlin), Supplementary papers, 207-226, 2003.
Shoya et al., “Improvement of drying shrinkage and shrinkage cracking of concrete by special surfactants,”Proceedings of the International RILEM Symposium, May 14-17, 484-495, 1990.
Hill Russell
Jolicoeur Carmel R.
Page Monique
Spiratos Ioan
To Thi Cong
Fish & Richardson P.C.
Handy Chemicals Ltd.
Marcantoni Paul
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