Augmented cementitious binder compositions and related methods

Patent metadata

Field	Value
Publication number	US-9464000-B2
Application number	US-201514790190-A
Country	US
Kind code	B2
Filing date	Jul 2, 2015
Priority date	Jul 10, 2014
Publication date	Oct 11, 2016
Grant date	Oct 11, 2016

Abstract

The disclosure relates to cementitious binder compositions, related concrete compositions, and related methods. The cementitious binder includes a cement augmented with particulate glass (e.g., mixed color waste glass) and a reactive particulate mineral and/or metal salt such as sodium bicarbonate or calcium carbonate. The cementitious binder can be combined with aggregate and used to form corresponding (cured) concrete compositions. Inclusion of the reactive particulate material improves the set time and early-age strength development of the cured compositions.

First claim

What is claimed is:

1. A cementitious binder composition comprising:
(a) a cement;
(b) a particulate glass composition having an average particle size ranging from about 1 μm to about 100 μm; and
(c) a reactive particulate composition comprising sodium bicarbonate, the reactive particulate composition having an average particle size ranging from about 1 μm to about 100 μm.

2. The cementitious binder composition of claim 1 , wherein the cement is present in an amount ranging from about 50 wt. % to about 95 wt. % relative to the cementitious binder composition.

3. The cementitious binder composition of claim 1 , wherein the cement has an average particle size ranging from about 2 μm to about 25 μm.

4. The cementitious binder composition of claim 1 , wherein the cement comprises a hydraulic cement selected from the group consisting of general use (GU) hydraulic cement, high early strength (HE) hydraulic cement, moderate sulfate resistance (MS) hydraulic cement, high sulfate resistance (HS) hydraulic cement, moderate heat of hydration (MH) hydraulic cement, low heat of hydration (LH) hydraulic cement, and combinations thereof.

5. The cementitious binder composition of claim 1 , wherein the cement comprises Portland cement.

6. The cementitious binder composition of claim 1 , further comprising a supplementary cementitious material selected from the group consisting of fly ash, ground granulated blast furnace slag, silica fume, rice husk ash, metakaolin, spent fluid catalytic cracking catalyst, and combinations thereof.

7. The cementitious binder composition of claim 1 , wherein the particulate glass composition is present in an amount ranging from about 5 wt. % to about 50 wt. % relative to the cementitious binder composition.

8. The cementitious binder composition of claim 1 , wherein the particulate glass composition has an average particle size ranging from about 5 μm to about 25 μm.

9. The cementitious binder composition of claim 1 , wherein the particulate glass composition comprises mixed-color waste glass.

10. The cementitious binder composition of claim 1 , wherein the particulate glass composition comprises a soda-lime glass.

11. The cementitious binder composition of claim 1 , wherein the reactive particulate composition is present in an amount ranging from about 0.1 wt. % to about 20 wt. % relative to the cementitious binder composition.

12. The cementitious binder composition of claim 1 , wherein the reactive particulate composition has an average particle size ranging from about 5 μm to about 20 μm.

13. The cementitious binder composition of claim 1 , wherein the reactive particulate composition is dissolved and reacted in an alkaline environment of the cementitious binder.

14. The cementitious binder composition of claim 1 , wherein the ratio of the average particle size of the reactive particulate composition to the average particle size of the particulate glass composition ranges from about 0.1 to about 5.

15. The cementitious binder composition of claim 1 , wherein the cementitious binder composition is in the form of a particulate composition substantially free from water.

16. The cementitious binder composition of claim 1 , wherein the cementitious binder composition further comprises water.

17. A cementitious binder composition comprising:
(a) a hydraulic cement comprising Portland cement;
(b) a particulate glass composition present in an amount ranging from about 5 wt. % to about 50 wt. % relative to the cementitious binder composition and having an average particle size ranging from about 1 μm to about 100 μm; and
(c) a particulate sodium bicarbonate composition present in an amount ranging from about 0.5 wt. % to about 10 wt. % relative to the cementitious binder composition and having an average particle size ranging from about 1 μm to about 100 μm.

18. The cementitious binder composition of claim 17 , wherein the hydraulic cement is present in an amount ranging from about 50 wt. % to about 95 wt. % relative to the cementitious binder composition.

19. The cementitious binder composition of claim 17 , wherein the hydraulic cement has an average particle size ranging from about 2 μm to about 25 μm.

20. The cementitious binder composition of claim 17 , further comprising a supplementary cementitious material selected from the group consisting of fly ash, ground granulated blast furnace slag, silica fume, rice husk ash, metakaolin, spent fluid catalytic cracking catalyst, and combinations thereof.

21. The cementitious binder composition of claim 17 , wherein the particulate glass composition has an average particle size ranging from about 5 μm to about 25 μm.

22. The cementitious binder composition of claim 17 , wherein the particulate sodium bicarbonate composition has an average particle size ranging from about 5 μm to about 20 μm.

23. A concrete composition comprising:
(a) the cementitious binder composition according to claim 1 ; and
(b) aggregates.

24. The concrete composition of claim 23 , wherein the aggregates are selected from the group consisting of crushed stone, gravel, sand, light-weight aggregates, heavy-weight aggregates, synthetic particles, recycled particles, and combinations thereof.

25. The concrete composition of claim 23 , wherein the aggregates are present in an amount ranging from about 25 wt. % to about 1000 wt. % relative to the cementitious binder.

26. The concrete composition of claim 23 , wherein the concrete composition is in the form of a particulate composition substantially free from water.

27. The concrete composition of claim 23 , wherein the concrete composition further comprises water.

28. The concrete composition of claim 27 , wherein the water is present in an amount ranging from about 10 wt. % to about 65 wt. % relative to the cementitious binder composition.

29. The concrete composition of claim 26 , wherein the concrete composition further comprises one or more additives selected from the group consisting of chemical additives, mineral additives, fibrous additives, and combinations thereof.

30. A cured binder composition comprising: at least one of hydration, pozzolanic and carbonation reaction products of the cementitious binder composition according to claim 1 and water.

31. A cured concrete composite composition comprising:
(a) a matrix comprising at least one of hydration, pozzolanic and carbonation reaction products of the cementitious binder composition according toclaim 1 and water;
(b) aggregates distributed throughout the matrix; and
(c) optionally one or more additives selected from the group consisting of chemical additives, mineral additives, fibrous additives, and combinations thereof.

32. A method for curing a cementitious binder composition, the method comprising:
(a) casting a cementitious binder composition further comprising water according to claim 16 into a mold; and
(b) curing the cementitious binder composition for a selected period, thereby forming a cured cement-based composition comprising a cementitious matrix comprising at least one of hydration, pozzolanic and carbonation reaction products of the cementitious binder composition and the water therein.

33. The method of claim 32 , wherein:
(i) the cementitious binder composition is in the form of a concrete com

Assignees

• Univ Michigan State

Inventors

• Soroushian Parviz
• Harsini Iman
• Peyvandi Amirpasha

Classifications

• C04B2103/0088

  Compounds chosen for their latent hydraulic characteristics, e.g. pozzuolanes · CPC title

• C04B12/04

  Alkali metal or ammonium silicate cements {; Alkyl silicate cements; Silica sol cements; Soluble silicate cements (alkali metal silicates per se, their preparation C01B33/32; ammonium silicates per se, their preparation C01C1/00)} · CPC title

• C04B14/28

  of calcium · CPC title

• C04B24/04

  Carboxylic acids; Salts, anhydrides or esters thereof · CPC title

• C04B28/04

  Portland cements · CPC title