Flowable slag-fly ash binders for construction or repair
AssigneesThe Board of Trustees of the University of Illinois, The United States of America as represented by the Secretary of the Army
InventorsWaltraud M. Kriven, Kaushik Sankar, Ghassan K. Al-Chaar
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Abstract
A method of using a flowable binder for construction or repair comprises providing a binder mixture including an alkali metal silicate, fly ash, slag, and added water, where a total water-to-solids mass ratio of the binder mixture is in a range from about 0.2 to 0.5. The binder mixture is mixed together with inert particles to form a flowable mortar. The flowable mortar is distributed over a bed of coarse aggregate, and the mortar seeps into interstices of the coarse aggregate. Upon curing, a composite comprising reinforcement material embedded in a cured binder is formed.
Claims25
A flowable binder for construction or repair, the flowable binder comprising:
- a binder mixture including:
- an alkali metal silicate;
- fly ash at a concentration from about 30 wt. % to about 60 wt. %;
- slag at a concentration from about 9 wt. % to about 33 wt. %;
- and added water,
- wherein a total water-to-solids mass ratio of the binder mixture is in a range from about 0.2 to 0.5.
A method of using a flowable binder for construction or repair, the method comprising:
- providing a binder mixture comprising an alkali metal silicate, fly ash, slag, and added water, a total water-to-solids mass ratio of the binder mixture being in a range from about 0.2 to 0.5;
- mixing together the binder mixture and inert particles to form a flowable mortar;
- distributing the flowable mortar over a bed of coarse aggregate, the flowable mortar seeping into interstices of the coarse aggregate,
- wherein, upon curing, a composite comprising reinforcement material embedded in a cured binder is formed.
A composite for construction or repair comprising:
- a cured binder comprising:
- C-N-A-S-H gel at a concentration from about 39 wt. % to about 64 wt. % and unreacted fly ash;
- and
- reinforcement material embedded in the cured binder.
Dependencies are inferred from the claim text.