Low efflorescence tile grout composition

Patent metadata

Field	Value
Publication number	US-9776918-B2
Application number	US-201114368641-A
Country	US
Kind code	B2
Filing date	Dec 29, 2011
Priority date	Dec 29, 2011
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

The present invention provides a dry mix of cement, sand, metakaolin in the amount of 5 wt % or less, based on total solids in the dry mix, and aluminum cement in a low amount (≦1 wt. %, based on total solids in the dry mix) useful as a tile grout, as well as uses thereof and to methods of using the same as a tile grout. The dry mix when made into a mortar exhibits excellent resistance to efflorescence as a tile grout.

First claim

We claim:

1. A low efflorescence tile grout composition comprising a dry mix of a) Portland cement, b) sand or aggregate, c) from 0.01 to 1.0 wt. %, based on total solids in the dry mix, of an aluminum cement, d) a fatty acid or a fatty acid salt of an alkali metal, an alkaline earth metal or a divalent metal, and e) metakaolin.

2. The dry mix composition as claimed in claim 1 , wherein the amount of aluminum cement c) ranges from 0.4 to 0.98 wt. %, based on total solids in the dry mix composition.

3. The dry mix composition as claimed in claim 1 , wherein the amount of metakaolin e) ranges from 0.5 to 5.0 wt. %, based on total solids in the dry mix composition.

4. The dry mix composition as claimed in claim 3 , wherein the amount of metakaolin e) ranges from 0.5 to less than 1.0 wt. %.

5. The dry mix composition as claimed in claim 1 , comprising from 30 to 50 wt. % of the Portland cement a).

6. The dry mix composition as claimed in claim 5 , further comprising one or more filler.

7. The dry mix composition as claimed in claim 1 , wherein the sand or aggregate b) has particle size range of 0.08-0.6 mm.

8. The dry mix composition as claimed in claim 1 , wherein the fatty acid or fatty acid salt of an alkali metal, alkaline earth metal or a divalent metal d) comprises sodium oleate.

9. Use of the dry mix compositions as claimed in any one of claims 1 to 8 as a tile grout.

10. In a method of using a low efflorescence tile grout dry mix composition wherein two or more or a plurality of tiles are laid on and adhered to a substrate with their largest dimension lying on the substrate, and then a tile grout is applied in the spaces or gaps between the thus laid tiles, the improvement comprising combining the dry mix compositions of any one of claims 1 to 8 with water to form a mixture, allowing the mixture to sit to achieve a trowelable consistency, applying the trowelable mixture to the gaps between the two or more or the plurality of tiles that are adhered to the tile bearing substrate and drying.

Assignees

• Lu Jonas L
• Dow Global Technologies Llc

Inventors

• Dong Chengbin
• Lu Jonas L

Classifications

• E04F15/02016

  with sealing elements between flooring elements (sealings of joints between building constructions in general E04B1/68) · CPC title

• C04B2/04

  Slaking {(simultaneous dehydrating of gypsum and slaking of lime C04B11/022)} · CPC title

• C04B14/106

  Kaolin · CPC title

• C04B2111/21

  Efflorescence resistance · CPC title

• C04B28/04 Primary

  Portland cements · CPC title