Composite foamable cements

• US 4,116,703 A
• Filed: 09/30/1977
• Issued: 09/26/1978
• Est. Priority Date: 09/30/1977
• Status: Expired due to Term

• Current Assignee: Corning Glass Works Inc. (Corning Incorporated)
• Original Assignee: Corning Glass Works (Corning Incorporated)
• Inventors: Wexell, Dale R., Stempin, John L.
• Primary Examiner(s): Poer, J.
• Application Number:
  US05/838,088
• Time in Patent Office: 361 Days
• Field of Search: 106/75, 106/76, 106/86, 106/87
• US Class Current: 106/601
• CPC Class Codes: C04B 12/04 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 Class Codes: C04B 14/22 Glass ; Devitrified glass
• CPC Class Codes: C04B 28/24 containing alkyl, ammonium or metal silicates; containing silica sols reaction mixtures resulting in mineral polymers C04B28/006; polymeric reaction products of alkali metal silicates with isocyanates C08G18/3895
• CPC Class Codes: C04B 38/00 Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof treating slag with gases or gas generating material C04B5/06 ; expanded graphite C04B35/536
• CPC Class Codes: C04B 7/00 Hydraulic cements calcium sulfate cements C04B11/00

Abstract

An inorganic cement mixture, capable of being thermally foamed in situ, consists essentially by weight of 8-20% of crystalline hydraulic cement, 22-35% of a hydraulic cement in the form of a glass powder, and 45-70% quaternary ammonium silicate solution. The mixture can be set as a cement and thermally foamed to unite two bodies and serve as a spacer and support to maintain them in spaced relation.

Claims

1. An inorganic cement mixture, capable of being foamed, and consisting essentially of, in percent by weight, 8-20% crystalline hydraulic cement, 22-35% of a hydraulic cement in the form of a silicate glass powder, and 45-70% of quaternary ammonium silicate solution.

2. An inorganic cement mixture in accordance with claim 1 wherein the crystalline hydraulic cement component is a premixed cement composed predominantly of Portland cement.

3. An inorganic cement mixture in accordance with claim 1 wherein the total hydraulic cement content does not exceed 50%.

4. An inorganic cement mixture in accordance with claim 1 wherein the crystalline hydraulic cement content does not exceed 15%, the silicate glass hydraulic cement content does not exceed 30%, and the quaternary ammonium silicate solution is at least 55% of the mixture.

5. An inorganic cement mixture in accordance with claim 1 wherein the crystalline hydraulic cement content is about 10%, the glass powder content is about 25% and the quaternary ammonium silicate solution is about 65%.

6. A method of forming an inorganic cement body which comprises forming a thixotropic mixture consisting essentially of, in percent by weight, 8-20% crystalline hydraulic cement, 22-35% of a hydraulic cement in the form of a silicate glass powder, and 45-70% of quaternary ammonium silicate, and allowing the mixture to react and set at a temperature below 150°

C.

7. A method in accordance with claim 6 wherein the set mixture is heated at a temperature sufficient to expand the mass to not more than five fold to form a foamed cement.